NoFriends26

Sorry for the newbie question, but I jsut really want to be sure about this.

I am thinking about buying an RX-7 that has 60k miles on the engine. It runs great (no smoke or anything like that) but i got the compression checked just in case.
I got back the numbers today and they read.... "The first chamber reports 7.1, 7.2, and 7.1. The second chamber reports 8.0, 8.1, and 8.2.". I have searched through the forum a little but and found that most people say 6 or below is bad. I just wanted to make sure that these numbers are OK before I buy it. How many miles would you say this engine has left on it? I would appreciate a quick response because I think I am going to buy it tomorrow. So Excited. Thanks for your help.

RX7Elmo

Those are good numbers. The good thing is that it's each chamber is close. But the 1KG difference from the front to rear rotor is kind of large. It's within limits however. I believe the limit from rotor to rotor is 1.5KG. So those are good. I'd say that the motor has a good life in it. OF course it depends how you take care of it. Check the coolant level and see if the car smokes coolant on a cold startup to check the coolant o-rings. GOod luck.

Danny

Nathan Kwok

I'm kind of worried about the large difference between the front and rear rotors, thats usually a bad sign, but the overall numbers are very good. However, ask if the compression test was done hot or cold. The proper procedure is to do it hot, a cold test will boost numbers by a full point across the board, very misleading. This has been demonstrated recently by a list member.