1984 Ford 2.3L powered Bronco II

Finally some updates on the Bronco. Updated the fuel system to an in tank pump (1990 Bronco II) and installed a Megasquirt 1.

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Newer pump/sender fits perfectly, eliminates the dual pump setup of the older ones, and creates a problem. Apparently the newer senders use a different resistance scheme that is also inverted. Fuel gauge now reads backward, running out at about 3/4 tank. At least its predictable.

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Inside of the tank is clean.

Surprisingly, Ford never made a supply line that was 3/8" all the way to the fuel rail. I found a filter that was 3/8" on both ends, but had to make a fitting to adapt the 3/8" lines/fittings to the fuel rail.

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I used the Dorman tool to press together fittings and lines, and snapped everything together.

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I put the same computer controlled carb harness I took out back in, after the necessary re-pinning for F.I. The Megasquirt mounted nicely on the passenger kick panel with a D.I.Y. 60 pin adapter.

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Note the duct tape coupling the tube to the throttle body. Still searching for 2.5" rubber tubing.

I had a problem getting the Ford IAC to work. Spent a bunch of time tracing wires, checking circuits inside the MS1, but it ended up being a firmware bug. Changed the idle option to closed loop, and then back to warmup, and started getting a square wave out of the fidle pin.

Tune time. It will take a couple days to get it close.

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I'll post driving impressions after a few days...
 
:unsure: that should give you a bit more bottom end torque with the EFI system. Any plans for a Turbo on it? Good luck :nod:
 
If I stumble across an ihirb52 turbo, or perhaps a T3 Garrett, or one of the cast off Subaru turbos (assuming one would work, not sure on the sizing), I might spend the time welding up the custom header required to clear the evaporator plenum. Dished Speed Pro pistons are available so I think I could just swap my rings over. And I would need bigger injectors, the ones I'm using now are 22 lb/hr four-hole Denso units out of a D*dge...
So yes, I've given it some thought. :D

You are right. The long runner EFI is worth a few ft-lbs down low...
 
While tuning, I noticed some abruptness off throttle offroad. I put the stock cam sprocket back on, which helped a bunch. The carb liked the cam advance, apparently the EFI does not.

Power is up everywhere. The 1st measured tank, came in at 18.6 mpg. I took this with a grain of salt, because most of that was WOT tuning and idling in the garage.

2nd tank measured 22.7 mpg without even trying. I'm really pleased with that.

We sometimes jump in with some of the local offroad groups on their outings. One memorable outing to Death Valley had 30 or so participants with a geologist in the lead vehicle pointing out interesting rock formations over the radio.

So I needed to install a radio.

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I have a taller indestructible stainless whip for offroad use.
 
CBs only available used now?
Still got mine, aint kept up w/the newer technology.

Lotta guys went to cellie but that's "isolating".
Where U @ probably lacka towers?

Glad 2 C U cont. with progress!
What do U have for tires now?
 
(y) That's some really great MPG numbers, as a comparison what did the old carb setup do? :nod:
 
chad":1yecl28x said:
CBs only available used now?

You can still get them, but not like this one.

I had an unlocked 10 meter rig in my last Samurai, but it died from the constant vibration. Old school units without smc's are better for 4x4's.

bubba22349":1yecl28x said:
what did the old carb setup do?

Best of 21, averaged 20. I think with a light foot and some more tuning I'll see 23-24.
 
"...the old carb…"
yeah?
 
chad":13z2491p said:
"...the old carb…"

Yep. Old. Outdated. Antiquated. Obsolete. Useless. Did I step on any toes? :rolflmao:

I think I'm just going to inject everything from now on...
 
It's been half a year since I've done any work to the Bronco. Jumped in it to move it a few weeks ago and it was a crank no start. Fuel pump failed (again).
I think it may have been a fluke, the fuel system is clean. Warrantied it out, and since this is a trail vehicle, I cut an access hole in the back.
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nice...

my buddy just did that 2 es ford van, same prob - several replace in 2 shorta time.
He didn't use the goop tho.(just screws)
What kind did U use?

How's the rig run? wheel?
sounds like U kinda abandoned it?

I 4get - U use the pinto carb (H/W progressive)? I really like that carb but need
info on how it does on the inclines & gradients (fuel starve/slosh).
It would B placed on a 4.3 '69 mustang 250 in a '66 bronk (re-jet?).
 
The goop is body filler. It makes a level surface for silicone to seal.
It's very capable off road. I haven't had it on extreme trails yet.
My job has me bouncing around states, so I dropped the registration for now...
 
Thanks!
***************************
It had been awhile so I reread some of your posts.

"...I 4get - U use the pinto carb (H/W progressive)? I really like that carb but need
info on how it does on the inclines & gradients (fuel starve/slosh)..."
I see you changed out the Weber 32/36 to a megasq.
Did the progressive do OK on the gradients or U never really got out there?
 
Never got the chance to try it out on slopes. Webers are known for issues on slopes. This one got excess fuel on hard braking, so I imagine it would have problems on a down hill. The injection is worth 2 mpg and some torque.
 
K.
still a great way (what U got now) to go
for the B II, enjoy it when U can,
thanks for sharin.

Next project?
 
Back in Nevada finally. Driving the Bronco again.

Got rear-ended in a rain storm (I could stop, guy behind me didn't). Bumpers and exhaust were damaged.





Hammered the rear bumper and swing out straight again, tossed the front bumper and did something in the plans anyway, mounted a high lift jack on the front.

 
I tweaked the drive pullies. Using a crank hub and machining an Escort crank pulley to fit dropped the diameter a bit.

Installed a bigger alternator pulley.

The goal is to slow the clutch driven fan and A/C pulley to reduce drag on the engine.


 
Fitted bigger tires. Had to trim the front sheet metal and body lift it, something I did not want to do, but tire rub off road forced my hand.

I used 2" square steel tubing cut into blocks and reinforced with round tubing. Body mount bolts are metric (12x1.75). I bought some 8" NC bolts and rethreaded them.




 
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