Help! Rotors/Caliper Fitment

boxermania · 12-19-2006, 04:44 AM

Need some help from the more versed parts exchange gurus'

Will a set of rotors/calipers, front and rear, from a C2 911 fit my 77 911S? If not, what will I need to make the conversion.....any guidance will be appreciated.

JeremyD · JeremyD's Garage

Short answer is yes, they will fit - but not without extensive modification ($$$)

This is a good place to start
http://home.nycap.rr.com/wmv/generalbrmd.htm

boxermania · 12-19-2006, 05:05 AM

Thanks for the info Jeremy......everything centers around $$$$$. Wait till they start charging for the air we breathe....hehehe

JeremyD · JeremyD's Garage

Are you looking at 964 c2 calipers or 993 c2 calipers. From experience - the 993 are much easier to use.

Also check out the VCI website.

boxermania · 12-19-2006, 03:27 PM

Actually is a '90 C2 with Brembo brakes.

I'm already running 17" wheels, any help for the working man? Only interested in the front.....

Todd Simpson · 12-19-2006, 04:02 PM

Big calipers on the front and no changes in the rear?

boxermania · 12-20-2006, 03:55 AM

That is what the article referred by Jeremy (#2 post) talks about. Conceptually there is some weight transfer to the front and therefore the front brakes carry most of the braking effort.

But, I'm just trying to see where I can go with the least amount of effort and expense.

Chocaholic · 04:30 AM

The least amount of effort and expense would be to keep what you have and make sure they're operating up to spec. Are you concerned that the brakes that Porsche engineers designed and installed on your car are somehow inadequate? Have you added significant power and need better braking for aggressive track work? If the answer is yes, and you're only upgrading the front, you're asking for trouble. If the answer is no, don't waste your money. Clean fluid, high quality pads, new seals (if needed) and you'll stop on a dime.

If you've installed a 3.6 and/or added forced induction and track your car, don't go for the cheap and easy brake upgrade. Trust me, there is no such thing. New MC, rotors, calipers, lines, etc., will set you back north of $3k for parts. Do it right, or don't do it.

Quote:
"Conceptually there is some weight transfer to the front and therefore the front brakes carry most of the braking effort."

Not the whole story. Proper proportioning front to rear is critical to safe braking in any car...especially our 911's.

boxermania · 12-20-2006, 04:55 AM

Chocaholic.....I think you helped me see the light.....I have done everything you mentioned and the car stops very well.....no added power and no track days.....so, no need to modify.

Thanks a bunch.........I must have had a brain fXXt...hehehe

Chocaholic · 12-20-2006, 05:42 AM

Smart decision Al. Heck...for 1/10th of what you just saved (in parts alone), you can sign up for a DE and have more fun than you've ever had with your clothes on. You'll be amazed how good your stock brakes are...and just how capable that old 911 is when pushed to the limit with proper instruction.

Have fun...and Happy Holidays,
Mike