Please enlighten me i am intrested in buying a chaste white 94 on ebay,the owner says its compression reads between 85-113,What does that mean? everytime i got a motor tested for compression it had readings like 8.5 to 8.2,when i looked at the white 94 tests it looked like mid 7s to a high 6 on one reading,that dosnt look too good to me,am i wrong about this?

 

The compression numbers he's giving are in PSI, not kg/cm^2. The wide range of readings is definitely something to be concerned about in my book.

 

Yes, anything over 15psi variation is a little odd.

 

thats a pretty big difference. i would be concerned but do the usual test. boost test, white smoke, idle. etc..