 Brake Guru's....what brake rotor do I have? |
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| nine14cats |
 Aug 20 2006, 10:33 PM
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#1
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Bill Pickering -- 914-6 GT aka....Leeloo  Group: Members Posts: 2,618 Joined: 10-February 03 From: Campbell, CA Member No.: 287 Region Association: None  |
My track car has C4 calipers in the front (or at least uses C4 pads). I would like to confirm what rotors are on the car. As you can see from the picture the hub bolts to the rotor.
Anyone know what I have or how I can tell? Thanks, Bill P. Attached image(s) 
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| Eric_Shea |
Aug 20 2006, 10:49 PM
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#2
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PMB Performance Group: Admin Posts: 19,289 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains  |
Looks to be the appropriate rotor for that (C4) setup. They "could" be off a Turbo-Look car or 965 351 043 00 (left) and 965 351 044 00 (right) but I doubt it. Chances are they are the 964 part (1/2 the price). Pricey either way... (you better hope they're not the Turbo's) I'm not a late model expert but I believe that model range the turbo's were floaters, hence double the price.
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| Jeroen |
Aug 21 2006, 03:54 AM
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#3
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914 Guru Group: Members Posts: 7,887 Joined: 24-December 02 From: The Netherlands Member No.: 3 Region Association: Europe |
how are your calipers mounted?
do they use adaptors or are the mountingholes on the caliper enlarged? chances that these are standard Porsche rotors are pretty slim... early 930 (78-80 IIRC) rotors were floaters but AFAIK any turbo rotor is too big to fit inside a C4 caliper |
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| Eric_Shea |
Aug 21 2006, 03:19 PM
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#4
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PMB Performance Group: Admin Posts: 19,289 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
QUOTE but AFAIK any turbo rotor is too big to fit inside a C4 caliper Cars of that era could have a Turbo Look option and they would get everything; rotors and calipers. |
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| nine14cats |
Aug 21 2006, 03:26 PM
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#5
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Bill Pickering -- 914-6 GT aka....Leeloo Group: Members Posts: 2,618 Joined: 10-February 03 From: Campbell, CA Member No.: 287 Region Association: None |
Thanks for the info Eric!
I'll look at the rotors and brakes in more detail this weekend. If you don't mind I'll post more pictures and hopefully you can help me ID the SOB's. The car is back in the trailer in storage untill this weekend. Thanks for the help! Bill P. |
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| Mueller |
Aug 21 2006, 04:23 PM
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#6
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
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I would think that there might be some part numbers cast into the rotor, perhaps on the OD of it????
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| Jeroen |
Aug 21 2006, 07:04 PM
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#7
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914 Guru Group: Members Posts: 7,887 Joined: 24-December 02 From: The Netherlands Member No.: 3 Region Association: Europe |
QUOTE(Eric_Shea @ Aug 21 2006, 11:19 PM)  Cars of that era could have a Turbo Look option and they would get everything; rotors and calipers. yep, a turbo look model (through '89) would have turbo (930) suspension/brakes but these are not 930 calipers, they are later (post '89) and AFAIK, those don't mix with 930 rotors check this page for brake dimensions http://www.pelicanparts.com/MotorCity/wmv/brakes.htm 930 rotors are 304mm dia and 32mm thick 964 rotors are 298mm dia and 28mm thick so since you have (what appear to be) 964 calipers, those are most definately not 930 rotors... I think your best bet would be to measure the rotor (dia, thickness and bolt patern/offset of the bell) and check with Coleman (you only need the rotor, not a new bell) |
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| Eric_Shea |
Aug 21 2006, 07:15 PM
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#8
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PMB Performance Group: Admin Posts: 19,289 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
QUOTE or at least uses C4 pads Missed that part. Indeed, as suspected I would guess 964 351 041 02 |
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