Help to ID & source rotor w/ Big Red Calipers

[bahnzai]

Hi folks, I need help identifying these rotors. They are on an '83 SC converted to a turbo (engine, flares, etc). I think these are still SC struts and spindle, with Big Red calipers added. I need to replace the rotors (cracks starting to propagate from the cross drilled cooling holes). Do the rotors come separate from the hats? They are about 12 1/2" dia (may be 313 mm seems close) and 30mm thick now (so 32mm new maybe?) Thanks for any assistance! Danny

[Miguel Antonett]

I have an 07 Cayman S, and the calipers look similar.

Have you noticed - the picutre shows - the wear on the rotors? you're not getting a full pads/rotor contact there, you're missing about 30~40% of the breaking power with those calipers. Might look cool but... M2c

[bahnzai]

yeah, on the contact surface, I just stuck a set of new pads in. I need to resurface the rotor, obviously not making full contact.
I measure the diameter a bit closer and I think they are 322mm rotors.

I have searched and find lots of upgrade kits, but no replacement rotors.

[TurboKraft]

How many bolts securing the rotors to the center hats? Closeup of the hardware?
May be stock 993T rotors installed on aftermarket center hats, could be aftermarket Coleman rotors.

[bahnzai]

10 bolts securing the rotor to the hat. Forgive my ignorance, are all 993TT rotors two piece (rotor & hat type)?

[TurboKraft]

993T front rotors are 2-piece, and by the 10-bolt count and the D-shape of the nuts, that's what they are.

[bahnzai]

Thanks Chris! That should make sourcing much easier.

[930/66]

Perhaps helps that Pictures
Since are 322mm in Front and 304mm Rear
Picture shows the number for the the 322mm right and left side










install of a RS2

[bahnzai]

wow, part numbers and everything! Thanks Thomas, it is a great help