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Old 06-11-2002, 07:23 AM   #1
gigaherz
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Member#: 18945
Join Date: May 2002
Default Differences between the twin turbo legacy, STI, and the regular WRX internals???

Hi guys...I'm looking for the most reliable base I can use to run 300-320 hp. I want to get a low mileage imported engine if possible to put in this kit car I'm building. The sti usually costs alot more than the twin turbo engine and I would like to know if there are any internal differences between the two. I would rather get the twin turbo and slap a t3/t4 on it with some custom piping if it's the same as the sti. I will be running it with a haltech e6k so management is not an issue.

Or should I save even more money and just get a standard wrx motor?

I did some searching but didn't really come up with much info about the internal differences between the engines. Any help will be greatly appreciated. Thanks.

Btw, did I forget to mention I'm shooting for 10'S!
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Old 06-11-2002, 01:42 PM   #2
gigaherz
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Bump!

Does anyone know the difference like if the twin turbo and the sti have the same crank and rods/pistons. They both make pretty much the same power so I'm assuming they are the same but I just want to make sure so I can purchase my motor, Thanks!
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Old 06-11-2002, 03:12 PM   #3
my01blitzwrx
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ask teagues auto, boxer4racing.com, he usually knows the answers to questions like that when i ask, im pretty sure he even told me he had a b4 tt motor that he just sold not too long ago but i think he would know
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Old 06-11-2002, 04:36 PM   #4
Narcisse91
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Location: Rochester, NY
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Legacy, Fiat 850

Default Re: Differences between the twin turbo legacy, STI, and the regular WRX internals???

Quote:
Originally posted by gigaherz
Hi guys...I'm looking for the most reliable base I can use to run 300-320 hp. I want to get a low mileage imported engine if possible to put in this kit car I'm building. The sti usually costs alot more than the twin turbo engine and I would like to know if there are any internal differences between the two. I would rather get the twin turbo and slap a t3/t4 on it with some custom piping if it's the same as the sti. I will be running it with a haltech e6k so management is not an issue.

Or should I save even more money and just get a standard wrx motor?

I did some searching but didn't really come up with much info about the internal differences between the engines. Any help will be greatly appreciated. Thanks.

Btw, did I forget to mention I'm shooting for 10'S!

Reliable 10s with 300-320hp?

I would figure out what you really want first. Do you want 300hp? Do you want to run 10s? Do you want something that will run reliably?

Once you know what you want, you can figure out which engine you need. If you really do plan to run 10s, you're going to need a fully rebuilt engine anyway, so it probably wouldn't hurt to figure out what kits are available for what engines, and work from there. If you want 300hp, reliably, an STI or B4 engine would be fine.
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Old 06-11-2002, 06:41 PM   #5
gigaherz
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thanks for the response my01blitzwrx....I will give them a call.

Narcisse91...thanks for the advice. I may rebuild the engine like you said. I wouldn't go crazy, just rebuild it to tighter specs and that's it. As far as me hitting ten's...if you guys can run 12's and 13's reliably in a 3000lb car. I think I can run 10's and 11's easy in a 1500lb car with a subaru motor in it. It is going in a tube chasis car that is rear engine and will be mated to a porsche 5-speed tranny. 10's shouldn't be a problem. I think it will be very reliable since it's only pushing half the weight. I'm not going to take it to the track every weekend either, I just want to have a really fun car!!

Thanks for the replies!
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