S15 rear caliper - direct bolt on?

[cgguy]

I did a search and came up empty. I know that the S15 rear calipers have a larger diameter piston than S14's (38mm). My question is can I use a pair of S15 rear calipers as a direct bolt-on while maintaining stock S14 rotors and pads?

From what I could find S15 discs are about the same size (258mm x 9mm). But I had no luck finding pad specs or anything else.

Thanks for looking.

[garagelu]

Im sure the s15 rear brakes are the same as the s14 ones. People say that the piston is a little larger but I highly doubt its going to make any difference. Especially since you are using the same pad area. The rotors and pads should swap right over.

I think its such a pointless swap because of the fact that people try to sell s15 rear calipers for 150 dollars. Do the 300zx rear brakes. Its much more worth it.

[pwhitersxs]

S15
General Specifications
NMBR0080
Unit: mm (in)
Front brake
Brake model OPF25VA
Cylinder bore diameter ´ number of pistons 40.4 (1.591) ´ 2
Pad
Length ´ width ´ thickness
116 ´ 50.0 ´ 10.0
(4.57 ´ 1.969 ´ 0.394)
Rotor outer diameter ´ thickness 280 ´ 30 (11.02 ´ 1.18)
Rear brake
Brake model CL11H
Cylinder bore diameter 38.18 (1-1/2)
Pad length ´ width ´ thickness
75.0 ´ 40.0 ´ 9.5
(2.953 ´ 1.575 ´ 0.374)
Rotor outer diameter ´ thickness 258 ´ 9 (10.16 ´ 0.35)
Master cylinder Bore diameter 25.40 (1)
Control valve
Valve model Proportioning valve within master cylinder
Split point
kPa (kg/cm2, psi) ´ reducing ratio
2,942 (30, 427) ´ 0.2
Brake booster
Booster model A215T
Diaphragm diameter
Pri: 230 (9.06)
Sec: 205 (8.07)
Recommended brake fluid DOT 3

The S15 has the same model number and rotor size as an S14.