Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
The reduced piston to wall clearance inherent with the O-ring design (when installed in a floating piston caliper), eliminates what Duntov said was
necessary. Obviously, the O-ring piston is not free to follow the disc (rotor). The designed-in balance between the lip seal and the piston spring is completely ignored with the aftermarket O-ring pistons. When cornering forces cause spindle deflection, the brake system is put in a bind. As Duntov said, lip seal pistons have the clearances necessary to eliminate this bind and piston knock-back. O-ring sealed pistons do not, and are subject to sticking in the bores unless the caliper in which they are installed is a floating caliper design.Bottom Line: If your Corvette is a static display show car, O-ring calipers are a good option. If you drive your Corvette, stick with Duntov’s design. If you drive your car only once a month, just depress the brake pedal every couple of weeks, and your lip seals should be leak free for at least a decade.
This comes from good articles I have on the Corvette brakes