Pushing stock RB to the limits

[sepulchralx]

I made 440hp on 20psi at 7300rpm with the warped-flange lovefab manifold

On a stock motor would it be reasonable to raise the boost some? I haven't heard what stock block/head/headgasket can take on an RB25. I know my last Sr held 23lb daily for a half a year until i sold it.

I do plan on a conservative tune at around 11.0 flat AFR
Modified by sepulchralx at 12:21 PM 3/31/2009

[virus77]

Unless you have the money for a rebuild I would leave it alone if you are content with the power level. I notice we all get ahead of ourselves and don't spend the time to drive our cars at certain power levels in a rush to break something it seems. Just Enjoy it a little or crank the boost and see what shes made of!!! hahaha. On a serious note I know of a RB pushing 480whp for a bout a year and it gave up the ghost at 600, so many variables involved but you are starting to push the "reliability" envelope.

[SullivanRacing06]

what kind of ems are you going to be using?

[sepulchralx]

what kind of ems are you going to be using?

aem is what i am using now.

i think i might just rave the rev limit to 8000rpm and leave the boost the same. I hardly ever shift to rev limit anyways.. i build mad power at high rpm

[SullivanRacing06]

why dont you take the manifold off and send it back to who ever you got it from and have them fix the warped flange?

did you get a hold of cool whip yet for the turbo to head gasket?

[Nissan2367]

Fix that flange... I bet your turbo will come in alot sooner any you will like it more! Then worry about turning up the boost. No point without fixing that flange!

[DrifterProdigy85]

Do you have the dyno? I havnt looked at many RB dynos and would like to see the powerband. Also what turbo are you running?

[jey_253]

Nice numbers. Just got my aem in and Running it on a gt32. What turbo/injectors are you running for 440@20lbs?

[Cjmartz2k]

You can do more. Those are good numbers, but with a good tune, it'll take more, even with the stock headgasket.

[sepulchralx]

You can do more. Those are good numbers, but with a good tune, it'll take more, even with the stock headgasket.

I already sent the manifold off, Cody at lovefab loves to make me feel unimportant by not answering phone calls/text messages/emails. God this pisses me off.

Yeah matt shue, the guy who tuned my car said if I could rev out 500-800rpms more i'd pick up 20hp+

Do i need solid lifters to rev to 8k or are springs more important to prevent valve float? I didnt feel like searching

[DrifterProdigy85]

I never trusted Hydro Lifters for revving much. On my SR i run Tomei Solids and upgraded valve springs and can rev to 9000rpm all day.

[lucky7]

mine wants to rev higher also, but i wont allow it. mine already puffs a little bit of smoke here and there. my dyno sheet said 453, but i have a feeling its a bit inflated. but i run a 3076r at 15psi.

[sepulchralx]

I was @ 440whp on a dynojet.

When you look at the tomei solid lifters they look like little sections of round rod cut to size. I'm curious if a machine shop could make some lifters out of some increased hardness SS or a titanium alloy rod.

I could get machine work done for free here at work.