Quote:
Originally Posted by soxfan143
There is really no danger in boosting these motors up to 16psi even. What you need to make sure of is that your turbo is efficient flow wise. You need a good flowing exhaust and turbo that will keep your cylinder pressures and backpressures in check. Those are the big killers at the higher boost levels. Like the GReddy turbo is NOT very efficient at all. So your pressures will be a little on the high side at the higher boost pressures. But with a good flowing manifold and turbo and exhaust and a spot on tune you can run 16psi+ all day on these motors. There are RSX guys running 16psi+ with well over 400whp for years with their Full-Race kits and Kpro.
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to many ppl on these boards dont know enough about turbo's or turbo setups.. PSI means nothing 16psi on a greddy turbo could equal the output of the Swift turbo on 8-9 PSI , it depends on the size of the turbo , what you need to look at is how much CFM the turbo flows.. Diff size turbo's are gonna move Diff amounts of air at the same PSI rating , Due to the size of the turbo.. PSi means nothing.. its more about the amount of power you are trying to reach.. and the efficiency of the turbo and the quality of the tune.. there are many variables that go into determining what we can or cant do safely.. its been proven that the K series motors can make 400-450HP safely if properly setup and tuned.. and maintained ... you could run a Si at 350-375 as a DD and not have to worry about killing the motor for those that want to play it safe..