How much Boost?

Boost231

What's An Intercooler
Staff member
Joined
May 26, 2001
ok can someone please explain how you determin what the max boost level you can run in your car. i mean i know with my gn i run around 20 but i know my bros tuck is running in the 30's and i know ive seen supras 40+. can some please tell me how this works.

brent
 
Don't have a formula that calculates it. But the best way to get to high boost is to control knock.

Many stock head/stock gasket/stock bolts cars out there hitting 30 psi boost with water alcohol systems or race gas.

Just keep knock under control. From my experience I've seen 30 psi in a factory shortblock. I know the racers run much more.
 
93 octane 15-18PSI depends on car, etc

116octane 35PSI ++ depends on car, size of turbo, etc.

Adding alky or water injection can raise the level of boost before knock.
 
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