1984 Ford 2.3L powered Bronco II

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MechRick
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Re: 1984 Ford 2.3L powered Bronco II

Post #51 by MechRick » Sun May 31, 2015 12:34 am

One thing that must be done is the power valve channels must be restricted to lean out the carb and allow it to work with the smaller displacement engine. This is done by drilling and tapping the channels and installing brass restrictors. I buy 6-32 brass plugs (Fastenal is a good source) and drill them.

P5060018.jpg


Clutch and flywheel arrived this week, so installation will happen this weekend.
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Last edited by MechRick on Tue Dec 27, 2016 2:35 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

chessterd5
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Re: 1984 Ford 2.3L powered Bronco II

Post #52 by chessterd5 » Mon Jun 01, 2015 3:59 pm

Looking good! Enjoying the build so far.

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MechRick
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Re: 1984 Ford 2.3L powered Bronco II

Post #53 by MechRick » Mon Jun 01, 2015 11:01 pm

I don't run the plastic covers on any of the 2.3l's I build. The cam and crank timing marks are on the covers, so before I dropped the engine in, I took a few minutes to find TDC on both the cam and crankshaft. Cam centerline is found by leveling the head and standing a flat surface across the first two cam lobes.

P5240022.jpg

P5240029.jpg


I punch a dimple on the front of the head aligned with the cam pulley mark.

Crankshaft TDC is a little more difficult. It involves a degree wheel, a piston stop, some math, and a fabricated pointer.

P5240023.jpg

P5240031.jpg

P5240033.jpg


This will make adjusting the ignition timing much easier.

Left and right mounts,

P5240035.jpg

P5240034.jpg


And the engine in it's final resting place. I love the room around it.

P5250045.jpg


Bleeding hydraulic clutches in Fords is tough because of the downward angle of the clutch master cylinder.

P5250041.jpg


I find if you remove the master and it's reservoir from the firewall and tilt it level, the air bleeds out much easier.
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Last edited by MechRick on Tue Dec 27, 2016 2:42 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

chessterd5
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Re: 1984 Ford 2.3L powered Bronco II

Post #54 by chessterd5 » Sat Jun 13, 2015 5:25 pm

Hey Mechrick, still following, great work! If you could educate us dumb people, I've heard that number 3 cylinder on these engines like to lean out, I guess due to fuel distribution in the intake. How do you deal with that on a budget build?
I thought your motor mount solution was a very good idea. Were you still going to show some porting pics or are they confidential? Either way thanks for sharing your knowledge. I hear you about the joy of working on simple things, I spent almost 10 years as a dealership mechanic for a Japanese import company. hmmmm, flat rate!

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MechRick
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Re: 1984 Ford 2.3L powered Bronco II

Post #55 by MechRick » Tue Jun 16, 2015 12:03 pm

chessterd5 wrote:I've heard that number 3 cylinder on these engines like to lean out


The 2.3L has fuel distribution issues, but for a DD I can set the leanest cylinder at a safe fuel ratio and not worry about it. Most of the published distribution issues were on dynos searching for peak HP numbers.

Incidentally, a good tool for checking this is an infrared pyrometer aimed at each exhaust runner.

chessterd5 wrote:Were you still going to show some porting pics or are they confidential?


If they were, it would be a wasted gesture...seriously though, I ported the exhausts only in this head. With the wet intake runners I'm hoping the sharp edges in the intake ports will help fuel economy. I do have pictures of the exhaust port work somewhere. I'll post them when I find them. It's nothing special though. Just cleanup of the ports with a brake wheel cylinder hone and streamlining of the exhaust valve guide boss and the short side radius. That's it.

If the power is lacking, I can always pull the head back off and port/mill some more...

I should get it running this weekend. Then deal with the accessories, exhaust and driveshafts...
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #56 by MechRick » Sun Jun 21, 2015 3:26 pm

Got the fuel pump installed this weekend. I originally ordered one for a 2.3L Mustang, but the housing dropped down, interfering with the steering gear. Reordered one for a Ranger 2.3L, and scratched my head for a few minutes, because it interfered as well. For a minute, I thought I was going to have to run an electric, which would be a step backward in reliability. I've seen trail vehicles stranded when the electric pumps failed. I ran one on my Samurai, but kept a spare in the glovebox.

Then I realized the Ranger application flipped the pump upside down. Duh.

P6130032.jpg


It still may interfere with the power steering pump/bracket though.

Next problem. The fuel bowl points the fuel line at the valve cover. Had to swap fuel bowls to get the correct orientation.

P6130029.jpg


4x4's should use a center hung float bowl.

P6130030.jpg


Bent a fuel line and attached a new 5/16" hose to the pump inlet.

P6130031.jpg
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Last edited by MechRick on Tue Dec 27, 2016 2:49 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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MechRick
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Re: 1984 Ford 2.3L powered Bronco II

Post #57 by MechRick » Sun Jun 21, 2015 3:39 pm

Spent some time extricating the EEC computer and harness. Fords have always been fairly logical about harness layout. In an hour I had the wires identified and the EEC out of the car.

P6120022.jpg

P6120023.jpg


I kept the gauge harness, which also has key power wires that I will use for other circuits. Not much to the simple carb harness...

P6120024.jpg


I won't be using the fender mounted voltage regulator, as the Ranger bracket uses an alternator with an internal regulator. The Bronco uses an ammeter that I will not use. Pity I can't change it for a volt meter.

I'm going to try to run a HEI module with the Duraspark distributor. I used an aluminum lowering block that has been collecting dust in my shed for the heatsink. The connections are crimped for now, if it runs well I'll go back and solder each one later. I tried this once before with less than spectacular results. Not sure if I have to run a resistor with the TFI coil. Last time I did this, I didn't use a condenser either, but supposedly it is only for RFI.



Battery and radiator should see it run next week.
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Last edited by MechRick on Tue Dec 27, 2016 2:51 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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MechRick
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Location: Las Vegas, NV

Re: 1984 Ford 2.3L powered Bronco II

Post #58 by MechRick » Tue Jul 07, 2015 4:52 pm

1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #59 by bubba22349 » Tue Jul 07, 2015 6:18 pm

:beer: sounds good :thumbup:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #60 by motzingg » Wed Jul 15, 2015 4:12 pm

awesome!

this is a project i'd like to do as well. the old generation rangers and bronco 2's are destined to become classics, i've always thought they've got great lines and with the 2.3, you can't kill them.

there are lots of them popping up on craigslist near me with blown up 2.8's. wore out timing chains and blown head gaskets, nobody wants to fix them. you can buy them rust-free for scrap prices.

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Re: 1984 Ford 2.3L powered Bronco II

Post #61 by MechRick » Wed Jul 15, 2015 4:31 pm

My thought exactly. If the 2.8 isn't dead, the A4LD will be.

A 2.3L manual trans Bronco II will be loads more reliable than the factory version...
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #62 by MechRick » Mon Aug 03, 2015 12:01 am

The Bronco is getting close to driveable.

Installed a rear driveshaft. Sometimes you can visit a wrecking yard with a tape measure and get lucky. In this case, a front driveshaft from a '90's Explorer fit the bill with a few tweaks.

1438458325752.jpg


The transfer case output of the BII was a 1210 double cardan joint, and the rear end a flat flange with 2.5" bolt spacing. I don't have anything against 1210-sized U-joints, considering I'm making less than 140 HP, but finding a shaft with them is tough. The Explorer used a 1310 double cardan output for it's front yoke, so I grabbed it.

1438461769748.jpg


The Explorer front yoke fits the rear of the BW1350 transfer case, and I must admit, I like the extra strength.

The front diff end of the Explorer shaft was strap bolts. I grabbed the rear slip yoke off the same Explorer and it fit the front shaft perfectly.

My transmission is the Toyo R4 four speed. If it was the five speed version of this trans I would have had to shorten the shaft a couple of inches.

Speaking of trans, the shifter was bent forward and right, which made the reach to it difficult. I submerged the plastic housing in water, heated the shift rod with acetylene and tweaked it a bit.

1438464158662.jpg


Got an exhaust welded up. It's a simple straight section dumping into a Magnaflow muffler and then the stock resonator, then dumping in front of the right rear tire. I got the Bronco out of the garage and drove it around the block, relieved that the trans syncros are sound and there is no bearing noise.

Next up is to wire the alternator and jet the carb...
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Last edited by MechRick on Tue Dec 27, 2016 2:54 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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MechRick
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Re: 1984 Ford 2.3L powered Bronco II

Post #63 by MechRick » Sun Aug 30, 2015 2:46 am

Some quick pics of the exhaust and driveline...

IMG_20150808_140722.jpg

IMG_20150808_140746.jpg

IMG_20150808_140820.jpg


Also got an APSX wideband installed.
IMG_20150808_183850.jpg
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Last edited by MechRick on Tue Dec 27, 2016 2:58 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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MechRick
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Re: 1984 Ford 2.3L powered Bronco II

Post #64 by MechRick » Sun Aug 30, 2015 3:01 am

My Holley two barrel turned out to be junk. I could close off the right idle mixture screw and that idle circuit was still getting fuel. Also, the transfer slot was very lean. I suspect someone drilled out the idle air bleeds in the past.

Went to the wrecking yard hoping to score a small venturi 2100, but carbs are getting scarce in the area pick a parts here.

Luckily I had a Weber 32/36 on the shelf that just needed some missing linkage ordered. I replaced the diaphragms and missing linkage, and combed the net for an adapter plate to mate it to the 2 bbl intake. The cheapest one I could find was $98, and I was afraid it would be one of those pot metal doorstops that warp. I decided to make one instead.

First step, 1/2" 6061 aluminum plate.

IMG_20150829_103143.jpg


I'll let the next pictures speak for themselves...

IMG_20150829_103149.jpg

IMG_20150829_110636.jpg

IMG_20150829_115850.jpg

IMG_20150829_122038.jpg

IMG_20150829_123838.jpg

IMG_20150829_124740.jpg

IMG_20150829_132900.jpg
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Last edited by MechRick on Tue Dec 27, 2016 3:02 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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MechRick
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Location: Las Vegas, NV

Re: 1984 Ford 2.3L powered Bronco II

Post #65 by MechRick » Sun Aug 30, 2015 3:08 am

IMG_20150829_134634.jpg

IMG_20150829_135555.jpg

IMG_20150829_151316.jpg

IMG_20150829_152226.jpg

IMG_20150829_171255.jpg


The Weber runs much better. The wideband is telling me that the transfer slot (or hole, in the Weber's case) is a bit rich. The nice thing about Weber carbs is the off idle fuel mixture can be adjusted by changing the high speed idle jet.
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Last edited by MechRick on Tue Dec 27, 2016 3:03 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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bubba22349
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Re: 1984 Ford 2.3L powered Bronco II

Post #66 by bubba22349 » Sun Aug 30, 2015 3:13 am

Nice machining :thumbup: :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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MechRick
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Re: 1984 Ford 2.3L powered Bronco II

Post #67 by MechRick » Sun Aug 30, 2015 1:07 pm

Thank you! It's crude, but it works.

Now I have to figure out an air cleaner. I've never liked the rectangular setups the Webers use. Maybe I can adapt the round base air cleaner I have with a bellcrank.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

motzingg
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Re: 1984 Ford 2.3L powered Bronco II

Post #68 by motzingg » Thu Sep 17, 2015 11:11 am

Nice work, I keep forgetting to check back on this thread.

If you can, do us a favor and post up all your jets and stuff once you get it dialed. For future reference I might want to build one of these someday but have no idea how to tune webers, they seem kinda mysterious to me.

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MechRick
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Re: 1984 Ford 2.3L powered Bronco II

Post #69 by MechRick » Thu Sep 17, 2015 6:39 pm

They can get intimidating because of all the settings that can be changed. Kind of like a Holley with the tuneable metering blocks...

Here is the base jetting, which is a bit rich and will have to be tweaked...


PRI SEC
main jet 145 145
air bleed 160 170
idle jet 75
pump jet 60

I highly suggest one of the cheap wideband gauges for carb work.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

motzingg
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Re: 1984 Ford 2.3L powered Bronco II

Post #70 by motzingg » Fri Sep 18, 2015 11:54 am

Yeah i'm thinking i'll go with the AEM one

http://www.enjukuracing.com/products/aem-wideband-uego-gauge-digital-air-fuel-30-4110.html?gclid=CjwKEAjw7O6vBRDpi7O-8OWSkwESJACNFsgx57g-me8buhNmxjn_Cp0SXEUCMrP0phOvIbOwPV9FbBoCs3zw_wcB

I don't recognize that brand you've got, was it a cheap one? hows it working? I guess 150 is just about impossible to beat in anything reliable, should just pull the trigger and grab it.

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MechRick
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Re: 1984 Ford 2.3L powered Bronco II

Post #71 by MechRick » Fri Sep 18, 2015 12:35 pm

http://www.wide-band.com/product-p/apsx_d2n.htm

So far it seems to be working fine. Time will tell...
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

chessterd5
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Re: 1984 Ford 2.3L powered Bronco II

Post #72 by chessterd5 » Sun Sep 20, 2015 1:45 am

looks good! still watching.

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Re: 1984 Ford 2.3L powered Bronco II

Post #73 by Ranger_gone_straight » Sun Sep 20, 2015 6:22 pm

I am the crazy guy that put a 300-6 into a 4wd Ranger few years back. Before I did that I looked all around for way to try a 2.3L to replace that horrible 2.8L. Four cylinder 4wd RAngers did exist but rare as hens teeth. As were the bellhousings. And only those early 5spds had a removable bellhousing. So one either had to find one of the super rare bellhousings or one of later 4cyl transmissions for 4wd. Or cobble some spliced spud shaft between a 2wd transmission and the transfer case, while keeping everything perfectly in alignment. There is an article by some guy that put a 5spd into his early Bronco doing this, apparently successfully....

As to fuel mileage, maybe you going all out with fresh engine and paying careful attention how its rebuilt you will do better. But from my experience with 2wd Ranger with the 8 sparkplugs and the computer fuel injection, these at best get around 24 to 25mpg driven at 55-60 mph. The newer Mazda 4cyl they used in later years did better, up towards 30mpg, but never was offered in 4wd version. I do wish you were bit clearer on what exact transmission and bell housing you are using. I assume you are using one of those rare ones from a factory 4cyl 4wd Ranger.

My 300-6 Ranger with the 3spd manual tranny and transfer case out of an early Bronco gets around 18mpg. Probably top 20 with an overdrive, but to shoehorn a 5spd in there, even if I could adapt it to the transfer case would require moving transfer case back further than original. There is no wiggle room to move engine forward. Darn hard to fit it into engine bay at all.

NOw I once owned an early Bronco, think it was a 1972, long time ago. It had the 200-6 and a manual 3spd. It would get an honest 21mpg at 55mph. Dont remember axle gearing, think it was originally a V8 Bronco that somebody put a car six cylinder into cause the bellhousing they used was nightmare to find a starter for. I ended up having to modify a starter to fit. Didnt lack for power though. Rusty as heck and I always regretted ever selling it, cause even rusted out basket case early Bronco now bring high dollar so will never own another one. I should just put a mid size pickup cab (think an early Dakota cab would fit nicely) on it to replace the rusted out body and kept driving it. Anyway I always wondered what mileage that 200-6 would have gotten with a 5spd.

Anyway be very interesting to see results of your efforts with the four cylinder. What axle ratios are you going to use? I always figured best would be either 4.10 or 4.56 with the four cylinder. Four cylinder can rev far better than the little V6 Cologne engines. You might lose some potential fuel mileage but be lot more pleasant to drive than lugging a lower numerical ratio. Yet still keep up with traffic on hiway in fifth gear. That 2.8L I had couldnt rev much and had no low end torque. Horrible choice for a pickup let alone a 4wd. The old 200-6 modernized with fuel injection would been lot better choice as optional factory engine for Ranger/Bronco II.

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Re: 1984 Ford 2.3L powered Bronco II

Post #74 by Ranger_gone_straight » Sun Sep 20, 2015 6:41 pm

Oh, might mention there was another possible end run far as LIMA 4cyl transmissions. At one point there was a company producing an adapter to make a LIMA 4cyl bolt to a standard small block Ford V8 bolt pattern bellhousing/transmission. It was really intended for people with turbo 4cyl I think, but hey they all had same bolt pattern so kit should fit any. And there are then kits to mate 5spd to old DANA 20 transfer case which will fit in frame of Ranger/Bronco, cause thats what I used putting 300-6 into my Ranger. All costs money of course. I looked all this up at one point wondering about a 4cyl with a T-19 four speed and Dana 20 combo. Then go for taller axle gearing.

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Re: 1984 Ford 2.3L powered Bronco II

Post #75 by MechRick » Mon Sep 21, 2015 12:23 am

The Mitsubishi FM146, Toyo tk4 and tk5 all use the same removable bellhousing. I lucked out and found the four cyl bell, which mates to the Bronco II 4x4 transmission, for $60.

There is also the Mazda M5ODR1 from later Rangers that could be used.

Mine has the tk4 four speed. The diffs have 3.45:1 ratios, which will put the cruise rpm just above 3000, but from prior experience, 2.3's are perfectly happy up there.

My B2300 pickup got an honest 26 mpg at 70 mph. If I can exceed 23 mpg I will be happy.

Driving the Bronco today, I noticed that the primary was rich and the secondary was lean. Simple fix, I just swapped the air correctors. Now the 160 is in the secondary and the 170 is in the primary.

I think the idle jet is still rich (idle screw is only one turn out). I'm going to wait until it's registered and legal before I mess with it.

Initial impression is that the engine has plenty of pep. I will order tires and wheels this week so I can evaluate the highway performance.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #76 by Ranger_gone_straight » Mon Sep 21, 2015 4:15 pm

Ok, didnt know that about the bell housings. I got the run around back when I tried to see if I could get a 4cyl housing that would fit my Mitsubishi 5spd. KNowing they all interchanged between different transmissions with removable housing is good piece of info to know. Though I am sure you dont want the early bellhousing on a later transmission cause if I understood a previous post of yours, the input shaft on early transmissions is longer. Mine is an '84 by the way and has the internal throw out bearing.

Image

Is there a particular reason you chose the 4spd? I didnt think they were an overdrive transmission. And were mainly used on early Rangers with the bargain basement 2.0L engine??? I do know they used the 4spd in early 4wd with 4cyl, cause somebody was trying to sell a Ranger set up like that on Craigslist recently. They seemed confused and even though truck "leaked from every place possible" and wouldnt stay running, they still wanted $1000.

I dont think any of the V6 engines used the 4spd.

Like I say, I am really interested to see what kind mileage and drivability you achieve.

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Re: 1984 Ford 2.3L powered Bronco II

Post #77 by MechRick » Mon Sep 21, 2015 6:40 pm

Ranger_gone_straight wrote:Is there a particular reason you chose the 4spd?


I'm cheap. This one popped up on Craigslist for $50, with the transfer case. It's supposedly out of a Bronco II.

Ranger_gone_straight wrote: I didnt think they were an overdrive transmission


It's not. That's why I'll be spinning 3k with low 3.45's. I'm reserving judgement until I get it on the highway. I won't put the front driveshaft on until I'm sure I'm happy with it. Otherwise I'll be looking for the tk5, which is an inch or so longer and will change all the driveshaft lengths.

By the way, http://www.fueleconomy.gov lists the 4 speed getting better mileage than the overdrive. There won't be any gear friction loss in fourth, so I'm hopeful.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #78 by motzingg » Tue Sep 22, 2015 6:09 pm

My own results were consistent with that, my first ranger was the '84. It had a '78 pinto motor in it with what i think was a 2100 carb.

It had the 4 speed (4x4) and would do pretty decent considering it had big tires, 20 mpg or so, but it could hold an honest 85 on the highway in top gear, maybe even faster considering the speedo was off.


The '88 i replaced it with had the 5 speed, it was a dog and couldn't do 75 up a hill in top gear, it could just barely do 80 in 4th gear but the ratios weren't as good.

It also had 3rd gear synchro get really crunchy at (only) 180k miles or so. The '84 ran over 200k and survived being rolled and crashed several times.



That is a good idea RE the falcon motor, i wonder how that drivetrain would shoehorn in? Certainly easier than the 300. I think I remember the Granada and LTD 250's came with the SBF/Cleveland style bellhousing which would open up the M5R2 married xfer case trans out of the F150, or build a C-4 with the front half from the falcon 6 and the output housing with the T-case on it... did they ever make a C4 4x4?

Also- last time you posted, you promised to share some pics of the 300 ranger conversion! please pretty please!

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Re: 1984 Ford 2.3L powered Bronco II

Post #79 by MechRick » Tue Sep 22, 2015 6:58 pm

I considered a 200/250 for about an hour. Then I remembered where I live. A/C is not an option, it's mandatory, and I had doubts an A/C condenser would find a home in front of an inline six.

The second Pinto I built had a cruise rpm of 3700 at 70 mph. That was a bit much, and I eventually put a five speed overdrive in it. 3200-3300 is no sweat though.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #80 by Ranger_gone_straight » Wed Sep 23, 2015 1:53 pm

You might get condenser in front of a 200. You sure wouldnt with the 300.

I've got the pics around someplace. I found them at one point, then didnt get them posted.

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Re: 1984 Ford 2.3L powered Bronco II

Post #81 by xctasy » Wed Sep 23, 2015 11:53 pm

Ranger_gone_straight wrote:Oh, might mention there was another possible end run far as LIMA 4cyl transmissions. At one point there was a company producing an adapter to make a LIMA 4cyl bolt to a standard small block Ford V8 bolt pattern bellhousing/transmission. It was really intended for people with turbo 4cyl I think, but hey they all had same bolt pattern so kit should fit any. And there are then kits to mate 5spd to old DANA 20 transfer case which will fit in frame of Ranger/Bronco, cause thats what I used putting 300-6 into my Ranger. All costs money of course. I looked all this up at one point wondering about a 4cyl with a T-19 four speed and Dana 20 combo. Then go for taller axle gearing.



Canfield 185 dollars.

http://www.cididit.com/adaptor_plate.htm
http://www.mypowerblock.com/group/ford- ... e=activity


Natch!
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XEC Ltd ICBE's Inter Continental Ballistic Engines-
FAZER 6Bi (M112 & EEC5) or FAZER 6Ti (GT3582 & EEC5) 425 HP 4.1L/250 I-6
FAZER 6V0 3x2-BBL Holley 188 HP 3.3L/200 I-6 or 235 HP 4.1L/250 I-6
X-Flow Engine Components Ltd http://www.xecltd.info/?rd=10

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Re: 1984 Ford 2.3L powered Bronco II

Post #82 by MechRick » Fri Sep 25, 2015 1:22 pm

The impetus for these are the 900+ HP Lima turbos seeing dragstrip duty. It allows autos with the small block bellhousing. C4 Lima bells are getting rare.

There is a company making manual flywheels for them, but it's not plug and play, and gets costly.

http://stinger-performance.com/
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #83 by MechRick » Fri Sep 25, 2015 4:11 pm

Details...

The PCV vacuum port was in the now defunct Holley, so I had to add one...

spacer1_zpsnvzjuqxf.jpg


I drilled a hole freehand through the adapter, because PCV must be shared on all cylinders (it's a metered vacuum leak).

spacer2_zpsiqmflu2d.jpg

Oversized with a bigger bit.

spacer3_zps3ni4uomc.jpg

Tapped for 1/8" NPT.


spacer6_zpsh411xwa9.jpg

Mounted.


pcv_zpsrwrz7y8x.jpg

PCV installed and working. This is a must before carb jetting.



Tires are 235/75-15 Wranglers on steelies painted Dark Machinery Gray. It's interesting that Wranglers were the tire/tread design used from the factory. I'm just using one 3 sizes bigger.
tires2_zpstpfjcmei.jpg
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Last edited by MechRick on Tue Dec 27, 2016 3:10 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #84 by MechRick » Mon Sep 28, 2015 12:30 pm

Well, I have a significant problem. I ended up ditching the engine-driven fuel pump because the Ranger P/S pump bracket interfered.

I was worried that an electric fuel pump would cause issues. I have had two of them fail in the last month, and the thing isn't even registered yet.

The fuel supply is filtered, the inlet hose has a gravity fed supply of fuel.

Does anyone make a reliable electric pump for carb use?

I may resort to an EFI pump/sender from an '86 BII and run a carb regulator and a return line.
Last edited by MechRick on Sat Dec 31, 2016 10:45 am, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #85 by Ranger_gone_straight » Mon Sep 28, 2015 4:15 pm

Yea seems like everybody wants to sell a $10 Chinese electric fuel pump for carbs. NOw some maybe in fancy box with a brand name and a brand name price, but its still the same el crappo generic $10 pump. Yes unfortunately seems if you want reliable electric pump, you use an OEM style intank pump for fuelie system and then have a pressure regulator with return line to get pressure down to something carb can use. They will last long time.

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Re: 1984 Ford 2.3L powered Bronco II

Post #86 by MechRick » Mon Sep 28, 2015 5:23 pm

That's the way I'm leaning. A good Walboro pump would give me peace of mind.

I think the stock setup used a lift pump in the tank and a high pressure pump on the frame rail. I won't be doing that.

Mustangs used an in tank pump that supplied 40 psi to the injectors. I'll see if I can retrofit that one, just in case I decide to go EFI (a distinct possibility if I'm disappointed with the fuel economy).
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #87 by Ranger_gone_straight » Tue Sep 29, 2015 2:13 pm

I suspect if carb and distributor advance are tuned, you can get close to fuel injection mileage. What carb systems cant do is both get good mileage and meet super low emissions. Sort of one or the other.

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Re: 1984 Ford 2.3L powered Bronco II

Post #88 by MechRick » Mon Oct 05, 2015 10:34 am

The parts store was nice enough to warranty the pump substituting a different brand. I've also got another on order. I'm determined to find one that's reliable.

Got the front shaft installed and the 4x4 working this weekend. Grabbed a Jeep Cherokee shaft that was a bit long, and had a slip yoke on one end (BII has the slip yoke in the transfer case).

IMG_20151003_132040.jpg


The jeep shaft had a double cardan joint on one end. Had to whack that off...

IMG_20151003_132049.jpg


Scored with an exhaust cut off tool...

IMG_20151003_163354.jpg


Knocked the yoke off...

IMG_20151003_163819.jpg


Shortened to 22" center to center (collapsed), deburred...

IMG_20151003_164254.jpg


Carefully realigned...

IMG_20151003_164837.jpg


Welded back on...

IMG_20151003_165310.jpg


...and new 1330 joints installed.

IMG_20151003_170441.jpg


This gives me two slip yokes, one on each end of the shaft. Hopefully this will allow enough length change in the event I swap transmissions. Drove it around a bit and parked it in the drive for a snapshot.

IMG_20151003_180228.jpg


Ill get it registered and insured by the weekend. Then it's clean, clean, clean....
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Last edited by MechRick on Tue Dec 27, 2016 3:15 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #89 by MechRick » Sun Oct 18, 2015 1:50 pm

I've got about 100 miles on the Bronco so far. Fuel pump seems to be hanging in there. It's a Mr Gasket low pressure pump. I've also got a Performance Products low pressure pump in the glovebox just in case.

The first 3 gallons of gas went 60 miles, with a carb running 12:1. I think I'll hit my fuel economy goal easily after jetting.

Speaking of jetting, the secondaries are a bit lean, which causes some ping at WOT. My 5000' obstacle between Vegas and my house slowed the Bronco down to 55 mph running on the primary bore of the Weber (6% grade). I think it will have no trouble pulling hills once the carb is dialed.

Lack of overdrive is not an issue. Runs along 70 mph perfectly happy and smooth, and even runs third at freeway speeds like it could do it all day.

Like any old Ford, there are a few electrical gremlins to chase down. I find most of them can be fixed by cleaning switches and connections.

I'll start replacing all the rubber (window run channels, door seals, sunroof seal) and work on the body/paint this winter. I'm thinking of spraying Rustoleum using a thinner that flashes a bit slower than acetone. I don't want to waste expensive paint on something that might get run through brush and scratched.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #90 by chessterd5 » Fri Oct 23, 2015 10:04 pm

Looks good MechRick!
I have a question if you don't mind? How much does a stock 2.3 engine weigh? If you know I'd appreciate it, thanks!

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Re: 1984 Ford 2.3L powered Bronco II

Post #91 by MechRick » Sun Oct 25, 2015 12:44 pm

I've never weighed one, but I'm guessing the carb versions are mid 300 lb range. The turbo intercooled versions are quite a bit heavier.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #92 by MechRick » Fri Oct 30, 2015 9:41 pm

More details...

Bought a nifty Redline adapter that allows a typical 5 1/8" round air cleaner.

adapter.jpg


Also found the correct D port carb intake in the wrecking yard. Swapped it in. The two intakes are identical except for the shape of the ports.

ovalvsD.jpg

ovalplenum.jpg

Dplenum 004.jpg


There seems to be a torque boost running the D port. Or maybe it was just the port mismatch.
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Last edited by MechRick on Tue Dec 27, 2016 3:27 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #93 by MechRick » Tue Nov 10, 2015 10:14 pm

I needed to get the spare out of the back. Decided to weld up a combination spare tire carrier/jerry can holder/hitch. Got some 2"x2" 1/8" square tubing and went to work.

The base bumper is mounted to the Bronco with 1/4" plate.

IMG_20151107_171823.jpg


The hinge is a simple gate barrel hinge.

IMG_20151107_175717.jpg

IMG_20151107_201646.jpg


Gate is a simple rectangle, swings to the right.

IMG_20151107_215125.jpg

IMG_20151108_123205.jpg


I'll weld a hitch receiver between the bottom of the mounting plates and put the license plate lamps in next weekend.

IMG_20151108_123308.jpg

IMG_20151108_123324.jpg
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Last edited by MechRick on Tue Dec 27, 2016 5:01 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #94 by MechRick » Tue Nov 10, 2015 10:22 pm

The last tank figured to 21 mpg. The carb goes rich on the power valve, 9:1 in some situations. I've been cutting the pintle of the power valve shorter in hopes I can reduce fuel flow through the power valve. The carb is close everywhere else.

IMG_20151030_153327.jpg

IMG_20151030_153342.jpg
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Last edited by MechRick on Tue Dec 27, 2016 5:02 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #95 by bubba22349 » Tue Nov 10, 2015 10:48 pm

:thumbup: Looks like its about ready to hit the outback! :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #96 by MechRick » Wed Nov 11, 2015 2:11 pm

Well, the back yard, anyway.... :lol:
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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Re: 1984 Ford 2.3L powered Bronco II

Post #97 by MechRick » Wed Nov 18, 2015 1:54 am

A little Rustoleum primer and paint...

bumper_paint_zpsf3wzpdlo.jpg


The smoke gray bears a remarkable resemblance to the dark machinery gray I painted the wheels.

The hitch is a class 3 receiver I had laying around. It's welded/bolted to 2" tube that's welded to the mounting plates. It will be mainly used for a receiver-mounted bike rack.

I moved the plate because it interfered with the hitch.

bumper_complete_zpsyswjmk1q.jpg


I trimmed the power valve a bit more, now WOT comes in about 11-12:1. Power is up a bit too.
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Last edited by MechRick on Tue Dec 27, 2016 5:04 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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chad
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Location: Lawrence Swamp, S. Amherst, MA

Re: 1984 Ford 2.3L powered Bronco II

Post #98 by chad » Tue Dec 01, 2015 7:43 pm

Cool23 wrote:How will that little 4 banger go pushing the Bronco along ? Given the Broncos had either a 6 or V8. Great project I have to say.


Look @ his pic (several frames higher) - he's talkin BII (Bronco Two, has a back or side window that goes way up into the roof). I think you might be talkin EB, early bronk or '66 - '77 (see my avitar). This was a much later vehicle, not chassy-on-frame but a unibody. There's been 6 or 8 generations of brocos ('66 - 96) two of em small w/a many yr break between them.
Hope the amer. english translates to Oz English in understandable fashion. Ask if needing more, glad to help - even bein an old thread!
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

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MechRick
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Location: Las Vegas, NV

Re: 1984 Ford 2.3L powered Bronco II

Post #99 by MechRick » Sun Dec 06, 2015 12:47 am

chad wrote:This was a much later vehicle, not chassy-on-frame but a unibody


I wish I had a unibody. It would lighten the vehicle similar to the weight of a Cherokee, which *is* a unibody.

Working on lighting at the moment. Added some halogen fog lamps and I'm working on a small light bar to mount some halogen spots. Found a nifty lighted rocker with a center off position. Down is fogs, up will be spots. Saves space on the dash and I see no reason to run fogs and spots at the same time.

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Last edited by MechRick on Tue Dec 27, 2016 5:07 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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MechRick
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Posts: 763
Joined: Wed Jan 04, 2012 7:43 pm
Location: Las Vegas, NV

Re: 1984 Ford 2.3L powered Bronco II

Post #100 by MechRick » Sun Dec 06, 2015 1:40 am

I wanted to advance the cam a bit. In the past, the vehicles I've built with fours were all much lighter and more aerodynamic than the BII. I left the cams retarded since they simply didn't need low end torque. Turbos like a bit of retard too. This one needs all the help it can get out of the hole.

There are multi index cam gears available for the 2.3, but I have spare cam gears so I decided to cut a new (advanced) keyway in one.

The 2.3 cam gear has 38 teeth. If one were to advance the gear one tooth on the belt, the advance would be 9.4 degrees (simple math, 360/38). This is too much. I wanted about half that (4-5 degrees). Halfway would put the index point in the valley of the cam gear tooth, so that's where I cut a new .250" keyway slot.

The correct tool for this is a broach and an arbor press. I used a hacksaw and file.

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This made a surprising seat of the pants improvement down low.
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Last edited by MechRick on Tue Dec 27, 2016 5:10 pm, edited 1 time in total.
1994 F150, 4.9L/ZF 5 speed, C-Vic police driveshaft
EFI head w/mild port work, 3 angle valve job
1996 long block, stock pistons, ARP rod bolts
Stock cam, aluminum cam gear
Hedman header, full mandrel bent duals, crossover, super turbos
http://fordsix.com/forum/viewtopic.php?f=2&t=73244
Bronco II with a 2.3L swap http://fordsix.com/forum/viewtopic.php?f=13&t=72863
1988 F250 2x4, 460 ZF 5 speed.

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