i just brought a set of t2 s4 rotors with 42k on them i was gonna put new seals on them today but i cant tell which one was rear and which one was the front... i tried searching and only post that came up made no sense to me .

 

The one that you put closest to the water pump is the "front" rotor, and the one that you put closest to the flywheel is the "rear" rotor.

 

What he means to say is 13B rotors are the same, there is no difference.

 

i know there the same but im saying which one is rear and which one is front theres no markings ....if i do new bearings it dont matter right?

 

I took a pic at one point of my S4 t2 rotors because one had smooth sides (the combustion sides) and the other rotor had very fine machined grooves in it. I was told that the grooved one goes in the rear housing and smooth up front, that mazda did that from factory.

Now if you mean on 1 rotor, which way it is supposed to be facing in its housing I don't think it matters. they look identical on both sides and its the side seals that hold the compression anyway. each side gets seals so it shouldn't matter when changing the bearing. just make sure you have a matching set of rotors, there is a letter on the face of each. they need to match or be within 1 letter of eachother.

 

they are matching. i cant tell a god damm diffrence cause the guy cleaned them up

 

^Classic..

 

this is gonna take forever to get the right answer -____- .

 

front and rear are the same......the guys are f#@king with you.....

 

Take note of the oil control ring spring...

 

Both rotors are Identical. But when you build an Engine you have to take the first rotor you put in, and make sure the oil control ring (SPRINGS) are put in the correct way for the rear rotor since the gear side is pointing to the rear, the rotor will rotate in a different direction than the front rotor that the gear side is facing Front.
That's why you need to make sure the Oil control ring (SPRINGS) are put in correctly for whatever rotor you choose to be the rear rotor, Or the front rotor. or the springs will slide and pop out of the slot if its rotating the incorrect way from how you put the Oil control ring springs in.

Because of the Hook in the springs that grab the Small hole that is made for them you dont want it Pushing on the hole. the oil control ring springs want to be Pulling so the oil control rings link up to the spring so they wont rotate or they will wear out and then you will have a smokey engine..

 

Here ya go partner.....

http://www.youtube.com/watch?v=ijJeUk_GqiI

I have to admit, That was funny.

 

actually theres an F somewere on the front rotor. near the side seals.

 

no offense but I dont think you should be touching the bearings or the motor for that matter

or was this a april fool joke?

 

no im dead serious. no joke . i know there the same i was just making sure there are no markings on them . i got my old motor still intact im using everything off the old rotors . the new rotors i got are bare and used with 42k on them. but anyways im done here . like he said with the oil control springs for rear and front just gotta set them aside . all set