Originally Posted by
big_wasa
Did you get around to checking the piston displacement and working out the compression ratio ?
It’s around 8:1, iirc the piston crown cc is around 6cc and the head is known to be 42cc. That’s with a standard gasket squashed to 1mm + 2mm decomp plate + another standard squashed gasket. I ended up using a online calculator for most of the maths as I’m backwards with lots of sums