wobbly

Just been told that Mericans quote the volume of the domes chamber, so the effective volume ( to calculate actual com ratio) is less the piston volume, for the 485 around 7cc - correct???

You guys quote actual compression volume or to the top of the plug hole????

Running 485 Cheetah, one on 95Pump the other 110 Race gas, anyone tell me what dome volumes are successfull/safe - thanks