compression readings

[knm]

took compression readings on my pan rear was 62lbs. front was 65 lbs. is this normal good or bad . had one guy tell me it should be 90 to 100 lbs.

[Jack_Hester]

Very low. Stock engine should be as the fellow said. 90 - 100#.

Jack

[Cotten]

A cam with a lot of overlap will display low readings at kick speeds.

I would put airpressure upon each sparkplug hole at TDC and listen at the carb, pipes, and timing hole for unusual leakage. If there is none, and it doesn't use oil, I wouldn't fix it.

....Cotten

[rickstone]

did you make sure the engine was warmed up good?
I get low readings when cold too.
more important that the two numbers are close together than high readings.
an old bike builder told me that kick starting to get compression readings is not very good indication of true compression. just too hard to get good readings when kicking. look for cylinder differences, and if close and bike has good power and is running good, don't worry too much