Joe,
The '90-'96 300 ZX has great Sumitomo all aluminum calipers with 4 big
pistons. The big pistons are necessary with the bad pedal ratio on the
TR cars. If you use a Porsche caliper (except the front engine ones) the
pistons are all too small for TRs since they don't have much weight over
the fronts. The Vettes, Camaros, and Mustangs mostly use the PBR type
with a steel frame and aluminum clamp. The second generation RX7
(GSL? I believe) has a nice 4 piston all aluminum finned caliper that is
plentiful and cheap in the UPullit junk yards. The pistons are kinda
small but you can get more force with a smaller master cyl and/or
changing the pedal ratio.
Caliper piston diameters of some stock calipers.
Fronts
TR6 1.958" x 2
Mazda 2nd gen RX7 1.420" x 4
300ZX 90-96 1.590" x 4
Rears - both of these have mechanical emergency brakes that clamp the
rotor.
240SX '89-94 1.330" x 1
'94 up Camaro 1.595" x 2 - not all have the e brake.
Greg Lund
jaboruch wrote:
> Friends, anyone know of any 4 pot aluminum brake calipers that are
> used on a production car and are obtainable at a reasonable price?
> Yes I know that Wilwood and such makes some, but I need them to be
> from a production vehicle, available here in the states. Not sure at
> this point if they have to be from a base model. I know that the 350Z
> Track models have Brembos, but I have not seen what is on the base
> model. Not sure what is on Corvettes, Mustang Cobras, etc? I think
> most Porsches have AL calipers too. Anyknow of a web site that would
> show their dimensions? Joe(B)
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