I am very interested in making my fiero twin turbo. I have 2 turbos from 2.2l chrysler LeBarons. I beleve they are Mitsubishi turbos on those cars. Anyways, I was wondering if anyone here would know of a good engine to put these on, the cost, the difficulty? Or even better, does anyone know if these turbos are any good? When my LeBarons ran they were really fast for 3 speed autos. I would probibly have put money into them if they didn't look like grandma cars. Any info would be much appreciated!

Thanks
Levi

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86 GT 4 speed 125,000Km

Granny cars can be fun. I had the 4 cyl turbo w/ auto in a 86(?)600ES convertible. Ferrari red and grey leather. pretty sharp and pretty fast too. Had the holed lambo style OEM wheels.

Ya they sure can Roger. My mother had a 90 Dodge shadow with the VNT Turbo (174 hp) with the 5 spd.

Man wasn't that little b@stard quick! Had a hell of a time keeping tires on the front of it! Too bad it had a speed limiter at 200kph, that was a seriously fast car fer a granny car.

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If anyone replies to this post giving advice on how to pull off a twin turbo 2.8 install, it will be total as I'd wager a toe it has never been done. Feel free to give it a go though if you have the tools, know-how, and buckets of cash. Make sure you take LOTS of pictures.

Please mail your toe to

I like toes
428 you let your mouth overload your ass ST.
Jerky WI 84989

It has been done. There are pics of it on the internet

Oops for you eh?

Way to go.

Good thing you didn't wager your Johnson rod. Your boy or girlfreind would probably have been upset.

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Recently acquired Formula 5 spd
All aluminum engine transplant in progress
Shaun41178@hotmail.com
**** FOREVER!

quote Originally posted by crzyone: I am very interested in making my fiero twin turbo. I have 2 turbos from 2.2l chrysler LeBarons. I beleve they are Mitsubishi turbos on those cars. Anyways, I was wondering if anyone here would know of a good engine to put these on, the cost, the difficulty? Or even better, does anyone know if these turbos are any good? When my LeBarons ran they were really fast for 3 speed autos. I would probibly have put money into them if they didn't look like grandma cars. Any info would be much appreciated! Thanks Levi

I think it would be hard to find room for a twin turbo setup, ie 2 turbos, extra exuast piping, extra intake piping, ect.

The only advantage of a 2 turbo setup is faster spool up time, but then you will lose on top end compaired to a single (simpler) turbo set-up.

Rogue

It's been done in a Datsun 510 I think. 660 Twin Turbo. I haven't seen a Fiero version.

As for the BS sink....

I was thinking of using a larger displacement engine, possibly a re-built to handle turbos 3.8 I was also thinking that you would need almost double the displacement of the LeBaron engines to make the twin turbo setup perfect. Quick spool up time and enough exhaust volume to handle 2 turbos. If I were to do it to the 2.8 I'd just use a single turbo, 2.8 would only need one 2.2l turbo, it would almost be perfect considering the slow spool up with the 2.2l engine. I'm probibly just dreaming right now. I like turbos much more than superchargers, just less complex I think. I also like the sound of the turbos winding up. I had a friend I passed doing 110 miles an hour and all he could hear was a big hissing sound when I blew by him. I think thats almost as intimidating as hearing a V-8 rev. I said almost....

As for the space restrictions, I'd be using the trunk area with lots of air ventilation, plenty of room once the trunk wall is removed. When I sell my boat I can definitly see myself tackling this. Won't happen this summer, but I could gather everything I need over the summer and have a winter project.

Anyone care to guess how much power a 3.8 twin turbo would put out? I'm just taking a wild guess but I'd say 300-400? Not quite sure how much psi the mitsubishi's put out.

Levi

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86 GT 4 speed 125,000Km

Can It be done? yes

I don't know why you would, One properly sized turbo works well.

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-Brian, Toolmaker
Lincoln, NE
87' GT- Turbo Charged, Modified 2.8- 235 HP w/ 7 psi Boost,

There is enough room for twin turbos in the Fiero as you have seen. I tried it but before it was fully completed I converted to a single turbo. I failed to connect the ground strap so the engine leaned out and went into detonation within a split second upon acceleration. I didn't discover the problem until after the conversion. The T-3 Garrett and the Mitsubishi turbos in a dual setup are border line too much for a 2.8 unless you intend to run high rpm and high boost pressure ~7000rpm/15 psi. A single Mitsubishi turbo is on the small side for the 2.8L while the T-3 especially with the .63 turbine housing from the ford cars is about just right. I have tried them both. Too little turbo gives you low rpm power, mid range to too much turbo gives you better top end performance, check the literature available. I'm currently running a T-3 on a 3.4L and about to build a twin turbo 3400. I'm going to use the T-25s from the 2.0 Turbo pontiac cars which are smaller than the mitsubishi and more suitable for space constraints. You really have to research and understand the use of turbine and compressor housing A/R's to determine the type of turbo to use. Someone mistakenly said that twin turbos reduce top end performance. It's all a matter of efficiency, if twin turbos allow the engine to breath better at the same rpm and boost pressure than a single turbo you'll have more power. I prefer a single turbo to twins however to reach the level of exhaust flow for the engine size and boost pressure I want to run it's more cost effective for me to install twins instead of purchasing a single larger turbo.

So I am wrong. Oh well.

Anybody ever notice that Shaun can be a real tool?

quote Originally posted by Joseph Upson: There is enough room for twin turbos in the Fiero as you have seen. I tried it but before it was fully completed I converted to a single turbo. I failed to connect the ground strap so the engine leaned out and went into detonation within a split second upon acceleration. I didn't discover the problem until after the conversion. The T-3 Garrett and the Mitsubishi turbos in a dual setup are border line too much for a 2.8 unless you intend to run high rpm and high boost pressure ~7000rpm/15 psi. A single Mitsubishi turbo is on the small side for the 2.8L while the T-3 especially with the .63 turbine housing from the ford cars is about just right. I have tried them both. Too little turbo gives you low rpm power, mid range to too much turbo gives you better top end performance, check the literature available. I'm currently running a T-3 on a 3.4L and about to build a twin turbo 3400. I'm going to use the T-25s from the 2.0 Turbo pontiac cars which are smaller than the mitsubishi and more suitable for space constraints. You really have to research and understand the use of turbine and compressor housing A/R's to determine the type of turbo to use. Someone mistakenly said that twin turbos reduce top end performance. It's all a matter of efficiency, if twin turbos allow the engine to breath better at the same rpm and boost pressure than a single turbo you'll have more power. I prefer a single turbo to twins however to reach the level of exhaust flow for the engine size and boost pressure I want to run it's more cost effective for me to install twins instead of purchasing a single larger turbo.

When you say mistubishi turbo you know there are many different sizes...
And the 2nd gen DSM (eclipse, talon) come with a T-25 turbo...

Rogue

Thanks guys. It would be real cool to have a twin turbo fiero, but it seems from what you guys say its not really practical. I'll have to think of another engine swap to do. I also like the sound of putting in a 4.9 caddy. Hmmm... twin turbo caddy.... *slap!* I'll hang on to the turbos, maybe they'll come in handy some day.

Thanks again
Levi

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86 GT 4 speed 125,000Km

quote Originally posted by crzyone: Thanks guys. It would be real cool to have a twin turbo fiero, but it seems from what you guys say its not really practical. I'll have to think of another engine swap to do. I also like the sound of putting in a 4.9 caddy. Hmmm... twin turbo caddy.... *slap!* I'll hang on to the turbos, maybe they'll come in handy some day. Thanks again Levi

What size turbos are they? Prob 12B...

Rogue