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robert68 Apr 27th, 06, 10:23 PM Can I perform a compression test if the motor is out of the car by turning the motor over by hand? Just wondering, motor is coming out for rings & bearings and maybe heads and a cam if my wife isn't looking, thought I would get a baseline number. - Thanks gunny Apr 27th, 06, 10:36 PM it might be best to hook the starter up to a battery and crank it ..with the carb fully open, and of course plugs out... Steptoe Apr 27th, 06, 11:36 PM As above Depending on what cam is in it will detewrmin the pressure Anything about 130 ibs up.. What you are looking for is variation, more than about 10 lb is suspicious | ||