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Calculate Pressure Ratio
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This calculation will determine Pressure Ratio using the input from a compression tester gauge.
NOTE:
The result is NOT the "compression ratio". The result is an indication of how well the compression
process is being carried out. This should give you a rough idea, "ballpark", of the compression ratio of
the engine. The only true way to determine the compression ratio is to calculate it.
This calculation is not applicable to engines with long duration camshafts. Cams with overlap will allow cylinder pressure to bleed off
resulting in an incorect reading.
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