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bahnzai's Avatar
 
Join Date: May 2002
Location: Columbia, SC
Posts: 247
Help to ID & source rotor w/ Big Red Calipers

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

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Danny
'83 930 track beast
'73 914-6 3.6
'70 914-6 (looong term restoration)
'74 TR-6
Old 02-28-2014, 05:56 AM
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Join Date: Jul 2003
Location: Back in B'ham, AL
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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
Old 02-28-2014, 06:50 AM
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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.
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Danny
'83 930 track beast
'73 914-6 3.6
'70 914-6 (looong term restoration)
'74 TR-6
Old 02-28-2014, 06:58 AM
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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.
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Old 02-28-2014, 09:14 AM
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10 bolts securing the rotor to the hat. Forgive my ignorance, are all 993TT rotors two piece (rotor & hat type)?


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Danny
'83 930 track beast
'73 914-6 3.6
'70 914-6 (looong term restoration)
'74 TR-6
Old 02-28-2014, 09:44 AM
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993T front rotors are 2-piece, and by the 10-bolt count and the D-shape of the nuts, that's what they are.
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Chris Carroll
TurboKraft, Inc.
Tel. 480.969.0911
email: info@turbokraft.com
http://www.facebook.com/TurboKraft - http://www.instagram.com/TurboKraft
Old 02-28-2014, 10:20 AM
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Thanks Chris! That should make sourcing much easier.
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Danny
'83 930 track beast
'73 914-6 3.6
'70 914-6 (looong term restoration)
'74 TR-6
Old 02-28-2014, 10:25 AM
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Garage
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
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87 930 3.4, PT5862, TK Long Neck IC, Fabspeed Headers, 964 NW`s, Ported Heads, Tial F46 (0.4Bar Spring), Turbosmart EBC, BL WUR with rpm switch /solenoid, SDS CPI Ignition, modified Muffler, and many other little mods

Last edited by 930/66; 02-28-2014 at 01:58 PM..
Old 02-28-2014, 01:52 PM
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wow, part numbers and everything! Thanks Thomas, it is a great help
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Danny
'83 930 track beast
'73 914-6 3.6
'70 914-6 (looong term restoration)
'74 TR-6
Old 02-28-2014, 02:38 PM
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