Re: Compression Ratio Calculation

[Bullwinkle <yd3@nvc.net>]

Bill:

If you can accurately measure the head thickness with it still on the engine,
then perhaps this will help.

Blake


Head thickness       chamber                ratio
   inches             size        1 1/4 litre    1 1/2 litre

3.022                 200cc         7.25            8.33
2.959                 175           8.1             9.0
2.928                 165           8.6             9.9
2.898                 150           9.3            10.7





Bill Loubiere wrote:
> 
> Is there a calculation which you can use the compression test data to
> calculate the compression ratio on your car?
>