Compression Test Numbers
07-27-2009, 07:26 AM
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Originally Posted by iam7head,Jul 27 2009, 12:38 AM
ar...not really
the number change depends on the method you used to do the test, the temperture of the engine, the brand and condition of the gauge.
compression test is only meant to be used as a first step in testing the overall "health" of the motor. on a used car 8-10 percent variation is "accepted" on a new and rebuilt motor is around 5 percent.
i did a compression test on a recently broken in ap2 and it's 210-215 across the board, ZOMG it's a lemon because it's not 250
the number change depends on the method you used to do the test, the temperture of the engine, the brand and condition of the gauge.
compression test is only meant to be used as a first step in testing the overall "health" of the motor. on a used car 8-10 percent variation is "accepted" on a new and rebuilt motor is around 5 percent.
i did a compression test on a recently broken in ap2 and it's 210-215 across the board, ZOMG it's a lemon because it's not 250
Welp,I have an ap1 & ap2 and the same shop tested both cars and that's the numbers they gave me and said the compression was perfect.Since they were able to get 500hp out of Krazik's car with a SC I tend to believe what they tell me.Like u said,numbers can vary ect...Think they are telling me stories,like I wouldn't find out? 
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