Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

Higher rev limit with stronger internals worth it?

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Old Jun 28, 2007 | 01:11 PM
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Higher rev limit with stronger internals worth it?

Isn't most of our power achieved by about 6500 anyway? Would it even make sense to raise the rev limit to 8000 or 8500 and get stiffer internals and cams? I think it would be cool but I'm not sure it would be worth it. Maybe a custom tune with the built engine would make use of it?
Old Jun 28, 2007 | 01:32 PM
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only if a larger turbo is added...would i bother with a higher rev limit. that way you get more use out of it (larger power band)
Old Jun 28, 2007 | 02:01 PM
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Yea I'm only going to be going vf-34.
Old Jun 29, 2007 | 05:51 AM
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then its not worth it...vf34 runs out of steam around 285-300whp...so if you were going to do cams a set of 264 would be a good combo...but honestly...not worth while to rebuild the whole motor just for 300whp...
keep it stock and simple
if your going to do cams/motor build...go big!
Old Jun 29, 2007 | 01:55 PM
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^^^^ EXACTLY. go big or go home. lol... wont really need em till more WHP is needed
Old Jul 4, 2007 | 03:55 PM
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yeah those turbo's almost running out of breath after about 6500...go TD06+ if you want to rev that high and make alotta power
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