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Re: Rotors
Posted by ljwest (more from ljwest) on Tue, 20 Aug 2002 22:18:31
In Reply to: , Kok Chen, Sat, 17 Dec 1988 12:00:00 

> You held out on us! The only difference in the brakes between the solid
> rotor early C900 brakes and the ventilated rotor early C900 brakes, 
> other than the rotor, is the caliper!  Since you're getting replacement 
> calipers anyways, specify ventilate rotor and the appropriate calipers.You'll 
> be very happy with the results.

NOT TRUE!!!!

The hub that the rotor actually bolts to is different.

The way the caliper bolts to the spindle, the inside friction surface on 
both ventilated & solid discs must be on the same plane. The 'hat' part 
of the rotor that bolts to the hub is about the same thickness for 
solids & ventilated rotors, so in order to make the rotors fit, they use 
a slightly longer hub with the mating surface moved outward. This puts 
the rotor right where it's supposed to be.

I always recommend to someone interested in the retrofit to obtain the 
complete spindle - ball joint to ball joint - from an 86/87 turbo. That 
way you know you've got all the right parts...

Larry
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