Jeremy Linney
Well-Known Member
- Joined
- May 22, 2010
- Messages
- 286
Asking for input as what seems to work well for head squish clearance. Recently bought a 7port to install into a Phil Thomas SS21 and will be using 3280 pipe and 50% nitro. Installed a turbo head button in place of standard plug button in which original head clearance measured .026" with standard button. I installed turbo head button and shimmed for .009" head clearance. Will this be a safe starting point or do I need more clearance?