Supercharging a 2F

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antidamage

antidamage

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Mar 12, 2010
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We've had this thread here before but I didn't find the info I'm after and in general I have a few questions.

So I've got to figure out a long-term plan for my FJ40. I've got a 350 Chev bellhousing that'll fit on an FJ40 transmission, so that's one step in that direction. On the other hand, from the threads I've read here it sounds like supercharging is also a good option, but not a path regularly taken.

The feeling I got from the supercharged option is that it sounds like a better idea and results in more power. The 2F is a solid motor and at least one poster got more benefit from going that way. V8s are cool, but supercharging sounds like it could be a smaller job. On the other hand, I'd be throwing a mechanic at it, whereas I could probably (very slowly) put in a 350 without it becoming an impossible task.

So what are the pitfalls? What work is involved? What parts would I be looking for to kick that off? Are there any good supercharging sites to read that go into the details of supercharging an engine like the 2F?
 
Anything can be done with enough money. I have never heard of a direct fit supercharger kit for any f/2f/3f motor. You may be able to modify a kit for a Chevy I6, if you can find anything like that. Are you panning on using this rig as a DD, wheeler, competition mud bogger?? Brackets and mounts would all be custom fabricated. On a stock engine layout, it might be hard to find room for the extra 1.5" of space needed for the drive belt, tensioner, and crank pulley. I have done two 350 Chevy swaps by myself, and I really thing that would be way faster, and much cheaper than trying to invent a SC system that is all dialed in, predictable and reliable. John
 
whats your budget?

I would think a blow through type turbo set up would be easier/cheaper and can be made with somewhat easy to find used parts.

tuning the get the proper AF ratio will be the key.

all said i think you'd find better economy/performance out of SBC
 
Hey mate there is a company here in aus that makes super charges for 2h engines so it probably isn't to hard to get it to fit a 2f engine will try and find them tonight
 
I looked into doing a Turbo setup for a 2F years ago.
The price was obscene, and that was with me doing all of the work to put a kit together, fuel injecting the motor, building a custom intake plenum, exhaust manifold for the turbo etc.

While you'd definitely have something cool and unique, you'd have something that is difficult to get parts for if (when) it breaks down. Boost isn't particularly kind to motors.

With the plethora of aftermarket support for the GM V8's I think that a 5.3 Vortec is going to be the best way to go in this day and age (assuming that you live in North America).

Check out http://bdturnkeyengines.com/

You can get a motor, wiring harness and the ECU tuned to your application for $2400. Considering that you already have the 350 bellhousing, a flywheel and clutch kit from AA is a phone call away.

Unless you are given everything you need, I doubt that you're going to be able to boost a 2F enough for less than that. The amount of work would be similar, but I think in the end the Vortec is the better choice if you want reliability, repair ability and access to parts pretty much anywhere.
 
I have seen a 3.8 supercharger put on a jeep motor. I imagine it could be adapted to fit a cruiser with work. You can get those superchargers for very cheap all day long. Then you need a vbelt pulley which you could probably make one from grainger work. Then you need a adapter for the manifold. Probably the best bet would be to use a 3f efi setup and toss some bigger injectors in. I had this figured out at one point but decided to spend time and money on supension. Its like supercharging a dinosaur. But it can be done with time, determination, aluminum welding, and good tuning. The low compression of the old toyota motors is good for supercharging. Or you could drop in a 80 series motor and supercharge that which would be pretty cool and keep it toyota
 
Sorry to rain on the parade, but the crank in a 2f won't take a ton of abuse. Blown motors work best with some RPMs. I can post a picture of what happens to a 2f crank if abused. Imagine a 2 piece crank joined together with a ragged crack.

A mild turbo setup could work, as long as it was used with a care.

A supercharger won't work with a single v-belt. Maybe with two. Old GM diesels used four.
 
budbuilt i think does some version of supercharging, fuel injected, for 6000 including labor.
 
If money is a factor super charging a 2f is as likely to happen as the official 911 story...
 
went through some old hot rod mags from the 50s and 60s and there were a lot of records set and even some 6 banger dragsters but most had cams and 3 deuces and even some dual quads but not to many with super chargers .given the ease and support for the small block its seems like the way to go good luck
 
Tigerstripe40 said:
I looked into doing a Turbo setup for a 2F years ago.
The price was obscene, and that was with me doing all of the work to put a kit together, fuel injecting the motor, building a custom intake plenum, exhaust manifold for the turbo etc.

.
Click to expand...

you don't need fuel injection for turbo.

in 1980 pontiac took the 135 hp 301 v8 and put a turbo on it that made 200hp in stock form. Granted the turbo engine was a little beefier than the NA motor.

it's not hard to turbo a carb'd engine.




If you could tune the carb yourself and borrow a wide ban 02 sensor for tuning i'm betting you could put together a junk yard turbo kit for less than a grand doing all the work yourself. But you'd need access to a machine shop and welding skills.

Adapting a turbo to the stock 2f exhaust manifold wouldn't be hard, you could even grind the mounting flanges off of a 2f header and make yourself a cool equal length side winder turbo manifold if you had the time/patience/skills.

Id also imagine building an adapter to fit a 4bbl to your 2f intake manifold wouldn't be the hardest thing in the world. Now getting equal fuel flow to all the cylinders might be an issue but what venture into new territory doesn't have possible issues?

It all comes down to what work you can do yourself and what you have to pay someone to do for you.

I doubt a high mileage 2f would last long with a large turbo even if Jesus himself tunned your vehicle.

Research blow through and draw through turbo set ups for carb'd engines.

Also look into how to regulate fuel at higher boost pressures/rpms.

I'd also look into possible oil pump upgrades (higher psi?)

I don't know what stock psi the 2f puts out but i'd want about a 60psi oil pump for the added strain a turbo would put on the oil system.

What i like about turbos is they can be done and added cheap if you have fab skills....the tunning is not where you wanna skimp!

What heat range plugs would you switch to on a forced induction 2f and what would you run on the plug gap?
 
dohcdelsol93 said:
you don't need fuel injection for turbo.

in 1980 pontiac took the 135 hp 301 v8 and put a turbo on it that made 200hp in stock form. Granted the turbo engine was a little beefier than the NA motor.

it's not hard to turbo a carb'd engine.
Click to expand...

After trying to figure out how to get the carb linkage and choke through a sealed box for a blow through design I figured it was actually simpler to swap in a TBI EFI setup, running a MegaSquirt controller.

For boosted applications, Corky Bell has written a couple of good books.
I'd recommend Maximum Boost, which is specific to Turbo's. He has another one specific to Superchargers.
 
a draw through set up would require no sealed box although a sealed box can be found used on ebay, craigs list, forums etc. We've had carb'd turbo cars much longer that we've have had fuel injected tubos cars. Finding a hat for a good price wouldn't be difficult.

Finding someone that know carburetors and can properly build one/rejet and tune one is kind of difficult. They seem to be a dying workforce.

buying a TBI, paying a tuner to program it, he'd have enough money in the set up to buy an Ls1 swap and money left over to buy gas for a month.
 
So just for comparison's sake, what would it normally cost to get a SBC supercharged? I'm talking crazy blower out the top, etc. I'm seeing bolt-on options on TradeMe here for around $2k.
 
shelfboy1 said:
went through some old hot rod mags from the 50s and 60s and there were a lot of records set and even some 6 banger dragsters but most had cams and 3 deuces and even some dual quads but not to many with super chargers .given the ease and support for the small block its seems like the way to go good luck
Click to expand...

Yeah, this is the conclusion I'm reaching too. I'll learn more transferable skills from doing an engine swap to a SBC as well.

While it sounds like supercharging a 2F can have kickass results, it loses out on lots of factors, not the least being the cool sound a V8 makes.

Also, here's my dumb question of the day. What are those horn-looking things out the top of each cylinder in this picture? I've been trying to figure out what they're called and what they do for ages. http://www.crankshaftcoalition.com/wiki/File:Fast_6.jpg

http://www.google.com/imgres?safe=o...BwwAg&iact=rc&dur=1238&page=1&start=0&ndsp=15
Click to expand...

Holy fxxx that's incredible.
 
Last edited:
This might be a stupid answer, but I am pretty sure that engine is running three carburetors.
 
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