3rd Gen Main Bearing Sizing HELP!
 

I need to order new main bearings for my rebuild. Mazda has several different color coded sizes for the main bearings. When I took the old main bearings out, there werent any color codes on them. So I dont know where to start the measuring. How do I go about measuring them and ordering new ones?? Appreciate any help guys... thanks in advance.

Huh? I've never heard of this for RX-7s... I just order whatever Mazdatrix sells and I've never had trouble.

B

welcome to mazda!
mazda makes sized bearings for the fd, they have them over and under but i've never seen the original measurement, anywhere. your best bet is to reuse the originals (its better unless they are damaged), or failing that ask an engine builder, or you can take a shot in the dark and get the one in the middle

mike

Bringing this back from the dead:My rotor bearings and main bearings are fubar.Any ideas what to do?Mazdatrix has 3 different sizes for the rotor bearing and 10 sizes for the main bearing......

Stathis.