Quote:
Originally Posted by ShakinJoe
KTL,
I am stuck with front rotor choice at this point. Does the 1986 951 rotor bolt on to our 87 Carrera? correct offset etc.....
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Joe,
It does bolt onto the wheel bearing hub just fine. But the offset is a bit too deep and it hits the A-arm near the ball joint. So VCI uses a small spacer ring on the strut spindle to push the whole hub & brake rotor assembly outboard just enough to clear the A-arm. It still rubs when you turn the steering wheel to full lock, so some grinding on the A-arm to shave a bit of metal away is the remedy there.
The spacer is simply a machined ring that looks like a thick washer with a very large inside diameter. It goes behind the spindle collar shown in this pic.
You can avoid this spacer BS by using the 930 rotor like Bill mentioned, or use the Wilwood HD rotor. But i'd not use these small Brembo calipers with the 930 or Wilwood. Too much hassle machining the caliper and making the adapter. I'd use the 993/S4 caliper. Caliper is already suited for an adapter and the 930 or Wilwood HD rotor is a simple bolt-on that a 5th grader could install.