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My rusty brain and compression ratio calculations

1K views 0 replies 1 participant last post by  mhuppertz 
#1 ·
I measured 130cc, down 1/2" in the bore measured from the highest point (???) on the piston (quench block).

The actual volume of my 4.35"x 0.5" is 121.77cc

So I am coming up with an effective dish of 8.23cc

Am I on track here?

So if I plug those numbers into a compression ratio calculator I am getting 10.5:1, which I would consider fairly ideal for my setup at my altitude with 76 degrees overlap on the cam.

:hammer
 
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