Online: Soapbox2627

S&S 106 kit piston valve relief cc's

  • Daggs
    Daggs
    10 years ago

    hey,

    does anyone know what size the reliefs are in the pistons in these kits?

    I'll will be measuring mine anyway in a couple of weeks when i pull it down to fit new heads (by Hoody) but just trying to get a jump start in working out compression figures so I can fit the right gaskets.

    I have 30 thou and 40 thou head gaskets just in case but need to measure how much down the hole and this cc volume before i can know for sure.

    shooting for 0.035" - 0.040" squish

    cheers guys

  • speedzter
    speedzter
    10 years ago
    I've seen a few figures, but if you use -2.5cc you will be close enough until you get a chance to measure everything.
  • Daggs
    Daggs
    10 years ago
    Cool thanks mate, yeah I've been doing a few calculations using between -3 and -6 but it's a bit of a waste of time until I measure it properly