Okay guys I have been searching long and hard to find some decent rotors in the local Idaho area. I need really need a 84-88 NA rotor I dont have alot of cash so it has to be local so shipping wont be very expensive or somewhere I can just drive to get it. Or if you guys have a line where I might be able to score a decent used one I would be most gracious. Please shoot me a PM or email

matt.geary@gmail.com

 

i got a bunch (4 or 6) of S4 13b na used rotors that you can just have. if i throw them inna box and greyhound them, it shouldn't be much. what are you looking for, i can send pics if you want... (send the best, trash the rest-lol)

 

you need to figure out what weight the rotor is ( they have a stamp on them A-F) a general rule of thumb is to keep within 1 letter of ecah other, or the motor will have extra vibrations...

 

All NA rotors from 13b's are the same weight and compresion. please see this page for the information.

http://www.mazdatrix.com/faq/rotorwgt.htm

 

wow just realized that the 86-88 ones are a few grams lighter.

 

yeah. the stamp really matters. and you wouldn't wanna have 1 84-85 and one 86-up c cause the apex seals will be different. 3mm to 2mm.