Search found 70 matches

by 86f250straight6
Sun Jul 22, 2018 9:43 pm
Forum: The Truck Stop
Topic: 95 F-150 w/ Bent frame
Replies: 9
Views: 750

Re: 95 F-150 w/ Bent frame

That could be a bad axle pivot bushing or the bracket got broken while getting pulled out. Camber on a TTB is adjusted by loosening the nut on the upper ball joint and turning the tapered bushing to increase or decrease camber. Your truck already has this built in but sometimes they sieze and you ha...
by 86f250straight6
Sun Jul 22, 2018 4:22 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: Mechanical intercooler pump
Replies: 15
Views: 819

Re: Mechanical intercooler pump

If I ever get around to doing a turbo 6, I would do air to air with a pusher electric fan with its own adjustable controller, that monitors air charge temps and controls the fan to kick on and off at the desired temp. Im bet you could make one of the higher end fan controllers from summit racing wor...
by 86f250straight6
Sun Jul 22, 2018 4:16 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: Mechanical intercooler pump
Replies: 15
Views: 819

Re: Mechanical intercooler pump

I assume youre talking about the old ntc-855 “big cam” cummins engines. They used engine coolant to cool the air charge with a heat exchanger mounted on top of the intake ports on the head. These were driven by the water pump and controlled by dual thermostats. The caterpillar 3406 A (and some B) us...
by 86f250straight6
Sun Jul 22, 2018 3:42 pm
Forum: The Truck Stop
Topic: 1986 F250 300 i6 efi conversion, SAS and more
Replies: 14
Views: 1525

Re: 1986 F250 300 i6 efi conversion, SAS and more

I believe a super duty mc and/or hydroboost is a pretty easy swap, but the old mc with 4 wheel discs is already damn impressive, i dont see why i would need to make the brakes any more powerful than they are now: At 55mph if i were to stomp on the brakes id get thrown out the windshield lol.
by 86f250straight6
Sun Jul 22, 2018 3:40 pm
Forum: The Truck Stop
Topic: 1986 F250 300 i6 efi conversion, SAS and more
Replies: 14
Views: 1525

Re: 1986 F250 300 i6 efi conversion, SAS and more

As far as the front axle goes, On a 80-97 the shackles are in front of the axle and the fixed point of the leaf spring is in the rear. A super duty has the fixed point in the front, and the shackle is on the rear of the spring- this design supposedly helps keep the axle from wandering around at high...
by 86f250straight6
Sun Jul 22, 2018 3:14 pm
Forum: The Truck Stop
Topic: 1986 F250 300 i6 efi conversion, SAS and more
Replies: 14
Views: 1525

Re: 1986 F250 300 i6 efi conversion, SAS and more

On the front driveshaft, I believe the stock 1986 shaft would not have worked as it only had a single u joint by the transfer case and the amount of lift would have been too much angle where it could bind when the suspension drops or hit the crossmember. I ended up making a custom trans mount and dr...
by 86f250straight6
Sat Jul 21, 2018 9:56 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Power Steering System
Replies: 8
Views: 512

Re: Power Steering System

Also did you use a drop pitman arm when you did the lift? The ttb steering setup will cause the tires to toe in as soon as the lift is installed because it pulls the steering link at a steeper angle. So a drop pitman arm and an alignment is a must have as soon as you lift a ttb ford. Without the dro...
by 86f250straight6
Sat Jul 21, 2018 9:51 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Power Steering System
Replies: 8
Views: 512

Re: Power Steering System

2 things: A lift kit on a ttb ford with drop brackets will murder your p/s pump in no time. In my experience the drop brackets for the axle pivots soak up alot of the power from the steering as they flex and stetch in a way they were not designed to do. Second, if you have a leak in the system you w...
by 86f250straight6
Sun Jul 15, 2018 11:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Alternator requirements
Replies: 17
Views: 857

Re: Alternator requirements

What brought you to the conclusion that the alternator was bad? I would do what SteveP said grab a multimeter and start testing. There a several fusible links built into the wiring that could have fried causing these issues. The alternator charge wire has a fusible link built in, and if its still st...
by 86f250straight6
Sat Jul 14, 2018 11:39 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Thinking about a 4.9 Mass Air Flow Swap
Replies: 5
Views: 506

Re: Thinking about a 4.9 Mass Air Flow Swap

MAF engines are a totally different animal than an SD. - The exhaust manifolds are different as there is an O2 sensor in each manifold that is part of the injector harness - MAF also has a crank position sensor with a tone wheel behind the harmonic balancer you would need as well (MAF eec iv needs c...
by 86f250straight6
Sun Apr 29, 2018 4:09 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 rebuild project
Replies: 212
Views: 14037

Re: 300 rebuild project

Ive heard good things about those machines. That should do the job and then some. The thing to watch is the duty cycle, the cheaper machines are a little lighter and more sensitive to alot of heat from continuous welding. As long as you give it some cooldown time in between big welds it will be fine...
by 86f250straight6
Sun Apr 29, 2018 2:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 rebuild project
Replies: 212
Views: 14037

Re: 300 rebuild project

If you have access to or purchase a cheap buzz box like a lincoln tombstone or such that is dc capable, all you need to buy is an ebay tig torch with manual gas valve and a bottle of argon and you can be making some really nice welds just doing scratch start tig. Its not as nice or adjustable as a m...
by 86f250straight6
Sun Apr 29, 2018 11:55 am
Forum: 240-300 "Big Block" Six Performance
Topic: Tired old '86 300
Replies: 1
Views: 322

Re: Tired old '86 300

You probably have cracked off a piece of the piston skirt or a broken ring. Everyone tells me this is the weakest link to fail on the 300. But dont sweat it, I have an efi 300 with 300k miles, #5 is completely trashed and it still runs and pulls great. It has a horrible rattle from 1500-2500 rpm, bu...
by 86f250straight6
Sat Apr 28, 2018 5:45 pm
Forum: 240-300 "Big Block" Six Performance
Topic: First Ever Engine Swap. Lots of questions. I want it right.
Replies: 6
Views: 549

Re: First Ever Engine Swap. Lots of questions. I want it right.

On the efi alternator bracket you will see there are multiple holes. The 90 amp 3g alt will use the inner mounting hole and the larger 130 amp will use the outer hole and requires 1” longer of a belt. You can plug the smog posrts in the head with 1/4 npt pipe plugs, allen head socket plugs are my fa...
by 86f250straight6
Tue Apr 24, 2018 2:59 pm
Forum: 240-300 "Big Block" Six Performance
Topic: First Ever Engine Swap. Lots of questions. I want it right.
Replies: 6
Views: 549

Re: First Ever Engine Swap. Lots of questions. I want it right.

If your motor is complete the simplest thing to do is keep the efi accessory brackets. Where the alternator mounts there are multiple holes that are meant to fit the 90 and 130? amp 3g alternators. the smog pump can be removed and bypassed with a shorter belt, and the water pump works in either dire...
by 86f250straight6
Tue Apr 24, 2018 11:09 am
Forum: 240-300 "Big Block" Six Performance
Topic: First Ever Engine Swap. Lots of questions. I want it right.
Replies: 6
Views: 549

Re: First Ever Engine Swap. Lots of questions. I want it right.

I would reccomend saving everything because there alot of dumb things youll need later once youve scrapped the remains and then you have to buy it again lol, been there done that. Change every gasket you can get to while the motors out cuz once its back in the truck qny leaks can become a real pain ...
by 86f250straight6
Tue Apr 24, 2018 11:00 am
Forum: 240-300 "Big Block" Six Performance
Topic: First Ever Engine Swap. Lots of questions. I want it right.
Replies: 6
Views: 549

Re: First Ever Engine Swap. Lots of questions. I want it right.

Just the 6 bell housing bolts are needed on a 4 speed, there are no converter to flexplate bolts like you saw in the vid, only automatic transmissions have this. With the manual trans, you will have to disconnect the clutch linkage so you can slide the fork off the throwout bearing to pull the engin...
by 86f250straight6
Mon Apr 23, 2018 9:07 pm
Forum: The Truck Stop
Topic: 1986 F250 300 i6 efi conversion, SAS and more
Replies: 14
Views: 1525

Re: 1986 F250 300 i6 efi conversion, SAS and more

I think it was you showed me that setup before. I like it, once i get the motors switched around i may try to convert to that. I think theres alot to be gained with tuning on a stock engine when emissions isnt an issue. My AOD transmission is not ideal for the trucks purpose either, a 5 speed or eve...
by 86f250straight6
Mon Apr 23, 2018 6:57 pm
Forum: 240-300 "Big Block" Six Performance
Topic: symptoms of cam gear fail?
Replies: 74
Views: 3084

Re: symptoms of cam gear fail?

You can definitely destroy a metal cam gear all it takes is one tooth to break off then theres enough slop that every time the broken spot comes around it slams into contact with crank gear and quickly takes out enough teeth that it wont catch anymore. Its less common than the fiber gear shredding u...
by 86f250straight6
Mon Apr 23, 2018 12:49 pm
Forum: 240-300 "Big Block" Six Performance
Topic: symptoms of cam gear fail?
Replies: 74
Views: 3084

Re: symptoms of cam gear fail?

Do you have oil pressure when cranking? you could have sheared the oil pump shaft that runs off the distributor and no oil pressure means your lifters will bleed down and the valves might not be able to open enough?
by 86f250straight6
Mon Apr 23, 2018 12:46 pm
Forum: 240-300 "Big Block" Six Performance
Topic: symptoms of cam gear fail?
Replies: 74
Views: 3084

Re: symptoms of cam gear fail?

it can possibly run for a few seconds as its coming apart, but not long at all.

If your distributor rotor turns when you crank the engine then your cam gear is still intact.
by 86f250straight6
Sun Apr 22, 2018 10:10 pm
Forum: 240-300 "Big Block" Six Performance
Topic: symptoms of cam gear fail?
Replies: 74
Views: 3084

Re: symptoms of cam gear fail?

They were some sort of resin and fiber, and theyre known to strip. When that happens the engine goes dead instantly like you turned off the key. So as I understand you have spark at the plugs, timing set somewhat close enough to run, and when you give it gas or starting fluid it wont fire? Thats not...
by 86f250straight6
Sun Apr 22, 2018 9:54 pm
Forum: 240-300 "Big Block" Six Performance
Topic: symptoms of cam gear fail?
Replies: 74
Views: 3084

Re: symptoms of cam gear fail?

If you crank the motor over does the distributor rotor turn? Also, how worn out are the bushings in the distributor? alot of slop in the shaft will make it misfire and barely run and when it sparks on a cylinder out of time thats flooded with fuel from cranking it can backfire big and blow flames ou...
by 86f250straight6
Sun Apr 22, 2018 5:07 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Has anyone broken a 95-96 hyper piston?
Replies: 4
Views: 545

Re: Has anyone broken a 95-96 hyper piston?

No forced induction or nitrous for this motor . Im even gonna keep the stock injectors this time, I think they supply enough fuel for what im doing, since the goal is low rpm torque and it will probably never see 3500 rpms the way I drive it. So i feel alot better that I can depend on this motor for...
by 86f250straight6
Sat Apr 21, 2018 7:21 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Has anyone broken a 95-96 hyper piston?
Replies: 4
Views: 545

Has anyone broken a 95-96 hyper piston?

I recently bought a ‘96 300 to replace my worn out ‘91 300 in my 86 f250. I got this motor/harness (besides that it was a steal of a price) for the reasons that it has hypereutectic pistons, a cps and sequential injection, obd2 blah blah blah. so while im refreshing this motor to install, I was wond...
by 86f250straight6
Wed Apr 18, 2018 9:29 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Distributor timing adjustments
Replies: 12
Views: 775

Re: Distributor timing adjustments

Do you still have egr? Egr is meant to have additional advance which could ping if its been removed.
by 86f250straight6
Wed Apr 11, 2018 7:06 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Exhaust port question.
Replies: 18
Views: 1683

Re: Exhaust port question.

I’m familiar with long arcing it to get started, and is generally necessary with 6010 and 6011 to get a puddle establised unless your machine has a hot start feature. However when welding with lo-hy (7018) or ferroweld, and other rods with higher nickel content you should absolutely avoid long arcin...
by 86f250straight6
Tue Apr 10, 2018 1:17 am
Forum: The Truck Stop
Topic: 1986 F250 300 i6 efi conversion, SAS and more
Replies: 14
Views: 1525

Re: 1986 F250 300 i6 efi conversion, SAS and more

Hopefully with these 96 hyper pistons i can squeeze some more power out of the thing without constantly worrying about pistons breaking. Eventually id like to experiment with some tuning methods on the obd2 harness and computer and see how much i can improve power/driveability in the low to mid thro...
by 86f250straight6
Tue Apr 10, 2018 12:53 am
Forum: The Truck Stop
Topic: 1986 F250 300 i6 efi conversion, SAS and more
Replies: 14
Views: 1525

Re: 1986 F250 300 i6 efi conversion, SAS and more

Thought id post a few new pics since the bed was finished and its been back on the road a while [image] http://i1076.photobucket.com/albums/w460/86f250straight6/75C2C03C-F37C-4754-9619-35A6B9876607_zpsxynpluxo.jpeg [/image] [image] http://i1076.photobucket.com/albums/w460/86f250straight6/A52DEDAE-EF...
by 86f250straight6
Tue Apr 10, 2018 12:13 am
Forum: 240-300 "Big Block" Six Performance
Topic: Exhaust port question.
Replies: 18
Views: 1683

Re: Exhaust port question.

Also i thought I’d add that if you weld with more amps than normal to get a strong initial start, establish the arc from the edge of the aluminum and drag down to your base metal, pausing to get good penetration and establish a puddle then move as quickly as you can forward without getting any under...
by 86f250straight6
Mon Apr 09, 2018 7:41 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Exhaust port question.
Replies: 18
Views: 1683

Re: Exhaust port question.

Just a suggestion, if you havent already found a solution. They do make rods specifically for cast iron that will work, and can be much easier to reach in the port with a stick than a tig torch. Youll have to be meticulous about your preheat and post heat to prevent cracking or warpage. Also, if you...
by 86f250straight6
Sun Apr 08, 2018 1:54 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Truck running lean
Replies: 10
Views: 710

Re: Truck running lean

Forgot to ask, are you using an msd 6al? I have had numerous problems with them failing and youre stuck on the side of the road with no spark. Might be worth hooking thing back up to stock like others have said to eliminate this as an issue.
by 86f250straight6
Sun Apr 08, 2018 1:52 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Truck running lean
Replies: 10
Views: 710

Re: Truck running lean

Is your 300 speed density or maf? definitely pull codes it can help point you in the right direction. However, the speed density efi is tough and i have learned it will run, and run half decent with only the pip (distributor) and ect sensors hooked up. You would be surprised, it took me almost a mon...
by 86f250straight6
Sat Mar 31, 2018 8:48 am
Forum: 240-300 "Big Block" Six Performance
Topic: Tips on pulling engine and rebuild.
Replies: 11
Views: 765

Re: Tips on pulling engine and rebuild.

egr not opening can definitely affect mileage. you most likely have a dry rotted vacuum line(s) somewhere on the engine. This is a very common problem with the colored hard plastic lines.
by 86f250straight6
Thu Mar 29, 2018 8:10 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Tips on pulling engine and rebuild.
Replies: 11
Views: 765

Re: Tips on pulling engine and rebuild.

The speed density efi that you have limits the cam choices, but is a good system overall and makes more power than any stock carbed version of the 300. Believe it or not these engines have alot to gain in the torque department just by a few exhaust upgrades. A high flow cat (or none at all) with a 2...
by 86f250straight6
Tue Mar 27, 2018 6:25 am
Forum: 240-300 "Big Block" Six Performance
Topic: 240 dies under load idles rough
Replies: 30
Views: 2181

Re: 240 dies under load idles rough

I have had problems similar to what you are describing many times when bringing an old car or truck back from the dead. I would definitely reccomend taking off the carburetor and dismantle and clean it with some brakekleen and torch tip cleaners for the small orifices, then blow out with shop air. S...
by 86f250straight6
Mon Jan 15, 2018 10:12 pm
Forum: The Truck Stop
Topic: 1986 F250 300 i6 efi conversion, SAS and more
Replies: 14
Views: 1525

Re: 1986 F250 300 i6 efi conversion, SAS and more

I still havent sent up notifications so i have no idea when someone replies but to check on the post. Do you have any pics of your truck? what year axle did you use? Ive always been a truck guy this is my 7th bullnose ford ive had but the first with a 6.
by 86f250straight6
Sun Jan 14, 2018 8:42 pm
Forum: Fuel Injection - Mega Squirt
Topic: Moats Quarter horse
Replies: 10
Views: 1519

Re: Moats Quarter horse

Not yet, Im looking to buy another efi 300 in the next few weeks to overhaul, then build the harness and get it running on the stand. Its starting to sink in that its going to be alot of work to change the parameters from v6 to i6 and make it run, let alone tune it to drive down the road. So Id rath...
by 86f250straight6
Sun Jan 14, 2018 12:34 am
Forum: Fuel Injection - Mega Squirt
Topic: Moats Quarter horse
Replies: 10
Views: 1519

Re: Moats Quarter horse

Maybe im a little late to this convo, but after reading I thought I'd pitch in what I discussed with moates last year. I spent almost an hour on the phone, just to find out that none of the sd 4.9 strategys are supported. However he said the best option would be to use a 6cyl mustang ecm and harness...
by 86f250straight6
Sat Jan 13, 2018 4:56 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 in a f-250 any good?
Replies: 15
Views: 1303

Re: 300 in a f-250 any good?

I think the truck is too heavy for what youre expecting, With OD cruising flat @55 I estimated between 16-18mpg, add a hill in the mix and its like dumping 5 gallons of gas downthe carburetor lol. I think a set of 4.10 gears with no more than a 33" tire will help get the weight moving without f...
by 86f250straight6
Wed Jan 10, 2018 9:09 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine Rattle Under Load
Replies: 8
Views: 673

Re: Engine Rattle Under Load

I did the rod bearings as cheap insurance while I had the oil pan off to replace the gasket. They were showing wear but never knocked before, and i already had the rod bearings from a previous project so i threw them in figuring.001 would compensate for 200k miles of smooh wear. I didnt bother to me...
by 86f250straight6
Mon Jan 08, 2018 9:14 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine Rattle Under Load
Replies: 8
Views: 673

Re: Engine Rattle Under Load

its definitely a mechanical engine noise. Like i said in my first post, timing is currently at 8* and when i run it with the spout unplugged (no advance) i have the same noise. I have advanced the timing and tested it from 14* to 0* and it doesnt ping until i get over 12*. I know my timing is accura...
by 86f250straight6
Mon Jan 08, 2018 8:20 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine Rattle Under Load
Replies: 8
Views: 673

Engine Rattle Under Load

Ok I'll try to keep this long story as simple as possible lol. My truck the 86 with a 91? 190k miles 4.9 motor has a pretty loud rattle under load. It has done this ever since I swapped the motor, but the exhaust was louder and the truck had other issues so I could never really isolate the noise unt...
by 86f250straight6
Mon Jan 08, 2018 7:36 pm
Forum: 240-300 "Big Block" Six Performance
Topic: EFI swap
Replies: 19
Views: 1374

Re: EFI swap

Also if you plan to delete the egr line from the exhaust manifold to the valve it can be plugged with either a 3/4 or 1" npt pipe plug I forget which size. I then took the egr valve off the intake manifold and pumped it full of rtv so it wouldn't cause a vacuum leak and bolted it up and plugged...
by 86f250straight6
Mon Jan 08, 2018 7:29 pm
Forum: 240-300 "Big Block" Six Performance
Topic: EFI swap
Replies: 19
Views: 1374

Re: EFI swap

I did an efi swap on my 86 and deleted all the emissions. All that stuff does is pump air into the exhaust and vice versa and is a total waste of space and can be removed with no issues or check engine light. The air tubes that go in the head are 14mm spark plug thread iirc it has been a while since...
by 86f250straight6
Sun Dec 31, 2017 9:44 pm
Forum: 240-300 "Big Block" Six Performance
Topic: performance parts for an off road build
Replies: 12
Views: 1342

Re: performance parts for an off road build

first thing, like pmuller said, is a carb going to be an issue with how you plan to use it? I have noticed with carb trucks inthe past that when im on and off the throttle in short bursts on a hill avoiding trees that the carb floods. in rough terrain like climbing a hill an you slide sideways a bit...
by 86f250straight6
Wed Dec 13, 2017 9:34 pm
Forum: 240-300 "Big Block" Six Performance
Topic: heaviest you've towed with a 300.
Replies: 27
Views: 2628

Re: heaviest you've towed with a 300.

I have an 86 f250 with solid axle swap from a 99-03 super duty, and matching rear axle with disc brakes. 4.11 ratio with 33's. engine is a 1993 efi 6 bolted to an aod. truck weighs about 8-8500 with the bed and tools, have towed a bobcat /trailer close to 10k with no issues and no trailer brakes lol...
by 86f250straight6
Thu Dec 07, 2017 5:23 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 85 f250 flatbed rebuild
Replies: 2
Views: 474

Re: 85 f250 flatbed rebuild

Cool truck, I have an 86 250 I just built a flatbed for. I dont think theres much to be gained with just the efi head itself, but an offy intake manifold for your truck and the HD exhaust manifold would definitely help. If you're comfortable taking it a step further you could instead swap the head, ...
by 86f250straight6
Sat Oct 28, 2017 5:56 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 I6 EFI performance upgrades
Replies: 235
Views: 25689

Re: 300 I6 EFI performance upgrades

1/4 npt pipe plugs. the actual thread is something else but they fit very close, just use some pipe dope or jb weld on the plugs so you dont get tiny leaks. i used the kind with a recessed allen head so they are easier to install, otherwise you have to grind a slot in the square head type plugs to u...
by 86f250straight6
Fri Oct 27, 2017 12:19 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 I6 EFI performance upgrades
Replies: 235
Views: 25689

Re: 300 I6 EFI performance upgrades

they make special extractor sockets that you hammer onto the head of the bolt and allow you to grip a stripped bolt/ nut.
dont drill it out and use an extractor if you can avoid it they tend to snap off and create more problems.