l98 boost?
Thread Starter
Instructor
Joined: Mar 2009
Posts: 142
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From: Miramar Florida
l98 boost?
Like 2 weeks ago i bought a custom rear moutn turbo to put in my 85 corvette wit 6 sp manual ( richmond 6sp manual) and i was wonder what is the max boost i can run save wit out blow my engine?
and i bought a meth kit too, it helps??
the custom rear mount turbo is 80mm turbo wit ceramic ball belrings and 60 wastegate.
and i bought a meth kit too, it helps??
the custom rear mount turbo is 80mm turbo wit ceramic ball belrings and 60 wastegate.
Melting Slicks
Joined: Aug 2003
Posts: 3,399
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From: Lakeville MI
Without any fuel or spark changes, 4 psi is probably enough to blow it above 5,000 rpm.
How are you going to fuel it? How are you going to control ignition timing?
Properly fueled and controlled, it may live for awhile at 10 psi depending upon the actual air charge temperature, fuel quality, rpm and state of tune. No simple answer.
How are you going to fuel it? How are you going to control ignition timing?
Properly fueled and controlled, it may live for awhile at 10 psi depending upon the actual air charge temperature, fuel quality, rpm and state of tune. No simple answer.
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I guess I keep being a bubble buster on boosting a stock L98. With my experience with boosting a stock L98, I would highly advise against it. There are just too many variables with forced induction that someone new to FI does not take into account. As I have stated on previous threads, spend your time and effort on heads/cam/exhaust (if you want to keep the stock bottom end).
You will not be happy with just adding boost for the long haul. I tried it on a stock L98 with 50,000 miles and I was very disappointed until I built an engine designed to run boost. FI is fickle and very destructive when not properly controlled (tune) and when the components (hyper pistons) are not designed for it.
I love my car now (forged 383, 11 psi boost, blast to drive) but there was a time when I told my wife it was destined to be a yellow flower planter in the front yard. FI takes a little dedication, $$$ and allot of attention to detail. Do not take short cuts or you will wind up with more problems ($$) than you had thought possible.
Good luck. Think about it before you make the leap.
90Indy
You will not be happy with just adding boost for the long haul. I tried it on a stock L98 with 50,000 miles and I was very disappointed until I built an engine designed to run boost. FI is fickle and very destructive when not properly controlled (tune) and when the components (hyper pistons) are not designed for it.
I love my car now (forged 383, 11 psi boost, blast to drive) but there was a time when I told my wife it was destined to be a yellow flower planter in the front yard. FI takes a little dedication, $$$ and allot of attention to detail. Do not take short cuts or you will wind up with more problems ($$) than you had thought possible.
Good luck. Think about it before you make the leap.
90Indy
Last edited by 90Indy; Nov 26, 2010 at 10:34 PM.
Le Mans Master
Joined: May 2004
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I guess I keep being a bubble buster on boosting a stock L98. With my experience with boosting a stock L98, I would highly advise against it. There are just too many variables with forced induction that someone new to FI does not take into account. As I have stated on previous threads, spend your time and effort on heads/cam/exhaust (if you want to keep the stock bottom end).
You will not be happy with just adding boost for the long haul. I tried it on a stock L98 with 50,000 miles and I was very disappointed until I built an engine designed to run boost. FI is fickle and very destructive when not properly controlled (tune) and when the components (hyper pistons) are not designed for it.
I love my car now (forged 383, 11 psi boost, blast to drive) but there was a time when I told my wife it was destined to be a yellow flower planter in the front yard. FI takes a little dedication, $$$ and allot of attention to detail. Do not take short cuts or you will wind up with more problems ($$) than you had thought possible.
Good luck. Think about it before you make the leap.
90Indy
You will not be happy with just adding boost for the long haul. I tried it on a stock L98 with 50,000 miles and I was very disappointed until I built an engine designed to run boost. FI is fickle and very destructive when not properly controlled (tune) and when the components (hyper pistons) are not designed for it.
I love my car now (forged 383, 11 psi boost, blast to drive) but there was a time when I told my wife it was destined to be a yellow flower planter in the front yard. FI takes a little dedication, $$$ and allot of attention to detail. Do not take short cuts or you will wind up with more problems ($$) than you had thought possible.
Good luck. Think about it before you make the leap.
90Indy
He is correct, research concerning FI is just as valuable as the dollars going into the build. Everyone's experience is different but it won't be a good feeling when something internal lets go mid rpm band. I personally would never consider FI unless I had done the research to construct a sbc designed to support boost applications.
