chepetech

iTrader: (2)

what is the difference between the front rotor and rear rotor of the engine? are there markings? Is one bigger than the other?

Thank you!

Benedunn

they are balanced as a pair ... weight b,c, or d i think.

the information is on 1 of the faces, the important bit is the first 2 letters. it will sau either F or R (for front or rear) followed by a letter B, C or D (for weight) if your changing rotors out you need to match a pair so FB + RB or FD + RD etc etc etc etc

hope that helps

chepetech

iTrader: (2)

Thank you

nycgps

iTrader: (1)

They have frank cuts at the edge, it really just fits in 1 way.

Weight Stamp is not very important, As long as it's within 1 letter of each other, it's not the best, but it will not throw it out of balance (not too much if this is a stock engine)

For example, C rotor (which 90% of the rotors are) will work with B, C, and D rotors, but NOT A nor E.

nycgps

iTrader: (1)

I'm not sure about that, need to look it up

chepetech

iTrader: (2)

i took my engine apart yesterday for the second time, I found that the front rotor says FC and the rear rotor says 1C. its on the face of the rotor. thanks again guys!

nycgps

iTrader: (1)

stock engines (assume that's what you have) 90% of the time will have a matched pair of Rotors, and usually they're "C"

and the rotors you buy new from Mazda is always "C"

A and E are just rare.