turbo valvetrain?

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12-09-2006, 12:55 PM

dirtygsr94

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turbo valvetrain?

im in the process of sourcing the rest of the parts i need to complete building my b18c1 to handle more boost. iam going to be using forged rods and pistons with arp rod bolts in my setup. i would like to be able to rev the car to around 9,000 rpm after iam finished. my question is should i have to change out my valvetrain to do this with the stock set of cams?

12-09-2006, 01:08 PM

HMTdmc

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Re: turbo valvetrain?

yes

12-09-2006, 01:15 PM

dirtygsr94

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Join Date: Mar 2006

Posts: 266

Re: turbo valvetrain?

just wondering why if im not changing the cam size i know that the rpm will have an effect but why exactly will it casue the valves to not work right?

12-09-2006, 01:19 PM

HMTdmc

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Re: turbo valvetrain?

I'm no valve expert but I do know that the stock valvetrain is only designed to handle the stock rev limit. If you rev past that you won't make anymore power and the valves will probably just float anyway.

12-09-2006, 01:23 PM

dirtygsr94

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Join Date: Mar 2006

Posts: 266

Re: turbo valvetrain?

i was thinking the same thing about float i just wasnt sure if the valvetrain could support some extra rpms i know its probably out of the cams efficency but with it being boosted it still feels like it wants to pull past 8200 right now. i was thinking maybe most people didnt do it because of weak rod bolts.