cjg454ss

iTrader: (27)

anyone running 30psi? if even possible, i havent pushed water at 21psi so far with my oringed block very low compression 8:1 on pump gass. was thinking about 25 with some 110, i also just picked up a alky kit to help. any infor would be appreciated.

Fireball

iTrader: (21)

I hit 30.4 psi

Mike Brown said he's been 34psi

cjg454ss

iTrader: (27)

if the compression is low and the intake temps are reasonable, would 30psi be anything to worry about? with octane to support it? i see most people stop around 22-25psi on here.

Fireball

iTrader: (21)

I wouldn't try anything less than C16 IMHO

Phil99vette

iTrader: (11)

Well it all depends. The MOST important question is how much timing are you running?

30psi and 10 degrees is way different than 30psi and 25 degrees.

cjg454ss

iTrader: (27)

im thinking about trying 25-27psi and 15* timing to start, 110 sunoco and 28g/hr twin nozzle meth injection. or would it be better to run 23-25 psi and 20* timing.?

Phil99vette

iTrader: (11)

The more timing you run the more cylinder pressure your going to make which will eventually lead to pushing coolant. I run as much timing as possible at every boost level.