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-   -   Front rotor question (http://forums.pelicanparts.com/porsche-911-technical-forum/454701-front-rotor-question.html)

zztot 02-01-2009 06:59 AM
Front rotor question
 
Guys:
Had cross drilled and slotted rotors on the car (914-6) and discoverd one cracked.
Bought used as part of a package so not really sure what they are and neither is seller. Using with big Wilwoods.
Picked up a set without drilling (ATEs with fancy pattern) but a significant dimension difference that has me puzzled.
Both old and new are 11' (plus a tick) in diameter. Old ones are about 15/16" thick, while new ones are closer to 3/4" thick. Anyone able to tell me what rotors are thicker or guidance as to how much difference. Believe new ones are an SC part.
Having to respace calipers and somewhat concerned over piston projection.

Thanks ,
TOT

turborat 02-01-2009 07:05 AM
Carrera rotors are slightly thicker that SC rotors. My guess is that you have one of each.

Bill Verburg 02-01-2009 07:07 AM
Quote:
Originally Posted by zztot (Post 4457585)
Guys:
Had cross drilled and slotted rotors on the car (914-6) and discoverd one cracked.
Bought used as part of a package so not really sure what they are and neither is seller. Using with big Wilwoods.
Picked up a set without drilling (ATEs with fancy pattern) but a significant dimension difference that has me puzzled.
Both old and new are 11' (plus a tick) in diameter. Old ones are about 15/16" thick, while new ones are closer to 3/4" thick. Anyone able to tell me what rotors are thicker or guidance as to how much difference. Believe new ones are an SC part.
Having to respace calipers and somewhat concerned over piston projection.

Thanks ,
TOT
911 '69 -'83 are 20x290mm
911 '84 - 89 are 24x290mm

zztot 02-01-2009 06:51 PM
Rotors
 
Thanks guys ...Mystery solved.
TOT


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