I am going to take my car in to have them do a compression test and drop the cat to check it out. Was wondering if there is anything I should be asking about for the compression test? Should I be asking them for some exact numbers? Or is it just a pass or fail kind of thing? It's not an official Mazda dealership or anything, so I just want to know if there is anything I should be making sure they do properly.

 

you need rpm numbers for each rotor, and 3 compression readings for each rotor.

so you should have something like

rotor 1, 225rpm 7.8,7.8,7.8
rotor 2 228rpm 7.7,7.9,7.8

if you don't get the RPM and six compression numbers (1 for each chamber) you've wasted your $$

 

Ok so I should be given RPM readings for both rotors and 3 compression readings for each rotor as well? So what should the compression numbers be for passing and what numbers for failing?

 

around or below 6 @250 rpm is where the stealership replace the motor.

 

Please see post #7 the new owner's thread: https://www.rx8club.com/new-member-f...4/#post3664007

I've got it detailed out.

 

Thank you gentlemen, got my car in there now, hopefully all will be well.