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Engine Compression

Warm engine to normal operating temperature. Remove all spark plugs. Disconnect ignition coil primary wire connector. Hold throttle plate fully open. Crank engine and note compression pressure.

COMPRESSION RATIO

Application Specification
RX7 9.0:1
COMPRESSION SPECIFICATIONS

Application Minimum psi (kg/cm2 ) @ RPM Standard psi (kg/cm2 ) @ RPM
RX7 (1) 100 (7.0) @ 250 (2)
(1) Difference between cylinders should not be more than 21 psi (1.5 kg/cm2 ).
(2) Information is not available from manufacturer.
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