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Compression Ratio ?
Hi Tony,
To know your exact compression ration, you have to specify:
- the exact rod length,
- the exact piston compression height.
(we don't take care about the small clearance volume between the fire ring and the piston top).
These values will permit to calculate the exact clearance volume between the block desk and the piston top. However, if you don't know it, you can refer at the John's calculation that is a very good approach.
Kind regards.
Bernard
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