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Old 06-27-2006, 07:15 PM
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Compression Testing ....(Hot vs Cold)?


My 289 was rebuilt 4 summers ago now and I'm not sure if my rings are still seating.

The reason I say this is there is a difference in the hot vs cold readings.
Basically the "cold" readings are:

The "hot" readings are:

Is there supposed to be that much of adifference between the hot and cold readings?

Also, when i squirt oil in the cylinders some of the jump up to 170 and 175.

Does this tell me anything about my rings and if they are seated properly?

Thanks, Greg.
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