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Old 07-30-2004, 05:23 AM
nanard289 nanard289 is offline
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Join Date: Jul 2003
Location: Ablis, 78
Cobra Make, Engine: Cobra Daytona (from USR) 302RDI Yates headed + Weber induction
Posts: 253
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Default 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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