turbo ls questions?
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Joined: Mar 2008
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From: Burleson, tx, united states
turbo ls questions?
ok so i have a 90 ef hatch wth a b18a1 swap and b16tranny. im starting to peice together a turbo setup for it. so far ive gottin a t25 turbo,stock 2g eclipse injectors,manifold,intercooler,1g eclipse bov. ive still gotta get piping and a downpipe and other little odds and ends. ive just got a couple questions on te turbo. all im looking for is to make like 250whp. ive heard good and bad things on this turbo. im wanting more opinions on how yall think this turbo will handle on a stock internal ls and wat i can expect.
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Joined: Jul 2004
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From: a fuzzy happy place, USA
Re: turbo ls questions? (turbols_EF)
that's a small turbo however you may be able to get close to your HP goal with it. with higher boost levels you might even be able to make more torque than hp. That's not really common on H-T but makes for a good street engine.
The turbo will work well with a b18a because they do not like to rev. You will spool the turbo very quickly.
As long as the engine is in good shape there are plenty of people making 300+ whp on LS engines bone stock for long periods of time. The reliabilty is all in the engine/fuel managment and a great tune.
depending on your exhaust and manifold set up you should be good for 200-230ish whp. Your turbo is kind of small and will peak out much sooner than say a .57 t3/t4.
But being that you don't need to be reving past the stock LS redline with your setup it's not going to be that big of a deal.
On a low reving stock LS you'll perform much better IMO with a cast/tubular log style manifold and small turbo than you would a larger tubo and a huge manifold (ramhorn, sidewinder, topmount).
The turbo will work well with a b18a because they do not like to rev. You will spool the turbo very quickly.
As long as the engine is in good shape there are plenty of people making 300+ whp on LS engines bone stock for long periods of time. The reliabilty is all in the engine/fuel managment and a great tune.
depending on your exhaust and manifold set up you should be good for 200-230ish whp. Your turbo is kind of small and will peak out much sooner than say a .57 t3/t4.
But being that you don't need to be reving past the stock LS redline with your setup it's not going to be that big of a deal.
On a low reving stock LS you'll perform much better IMO with a cast/tubular log style manifold and small turbo than you would a larger tubo and a huge manifold (ramhorn, sidewinder, topmount).
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Joined: Jun 2003
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From: Bel Air, MD
I'd suggest getting a different turbo. T25's run out of steam real fast on 4g63's, and even on 2.0l engines 250whp can be pushing it with that turbo.
See if you can't find a 14b from a 1g DSM. They're still very cheap but are a much better option compared to the T25. You should have no problems with 250whp on the 14b. I made 188awhp at 14psi when I had my 14b still, and that is through an AWD driveline on an otherwise stock car.
Of course, actually realizing your goal of 250whp will depend a lot on your tune, as well.
See if you can't find a 14b from a 1g DSM. They're still very cheap but are a much better option compared to the T25. You should have no problems with 250whp on the 14b. I made 188awhp at 14psi when I had my 14b still, and that is through an AWD driveline on an otherwise stock car.
Of course, actually realizing your goal of 250whp will depend a lot on your tune, as well.
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