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I got 168 across the board on my bad ass tripple If I remember right a 2 stroke will run on as little as 90 psi.
472 cc's in a Shee - 190 to 210 I have to run race (tt 111) with +8 degrees full timing. I've pushed as much as 220 with out the powervalves in to try it.I could run pump on the same motor with stock timing @ 160 psi. Stock was round about 135.Had more top end with lower compression on the dyno, but lost some down low....Always a trade off...All seems to depend on displacement as far as how much they will take without detonation..
I run around 165 on my pilot with premium pump gas and amsoil...I think it's more to do with compression ratio rather than the number you get from the gauge....There is a formula for it somewhere...I will try to find it....Hoodlum