Editing Brake Upgrades Miscellaneous (section)

==Silvia Brakes==

[[Image:Brakes s13strut rideheight.jpg|thumb|left|350px|S13 struts and springs ride height]]

[[image:Brakes_s13_lower_arms.jpg|thumb|right|300px|S13 lower arms]]

[[Image:S13 TRW Tierodend Extension.jpg|thumb|right|300px|Extended tierods for safety]]

[[image:Brakes_R33calipertop_S15caliperbottom.jpg|thumb|right|300px|R33 turbo caliper top, S15 caliper bottom, similar to Z32 VG30DETT and R32 GTS-t M Spec but cast iron, no ribs.]]




The Silvia lower arm/hub/ball joint assembly is a modern style, the shock/spring assembly bolts on to the top of it, unlike the older insert style shock used by the R31.  A brake upgrade may be combined with changing to S13 style front suspension.  This instantly allows access to S13 coilovers.  The S13 lower arms can be used, with R31 radius rods.  The front track will be increased slightly by the S13 lower arms.  R32 tierods can be used, as the R31 tierods are not long enough to engage adequate thread with the increased track.  The R32 tierods should fit straight on to import or KYB steering racks, but will not fit on TRW racks, so either a new rack or adaptors will have to be used.  Alternatively, the thread on the R31 tierods can be extended by welding a nut on the end of the tierod (obviously with bolt inserted through both threads to keep them in line and in phase).




Some people have found that if the factory S13 struts are used, the wheels disappear up inside the guards, to the extent the steering wheel can't be turned, and the car is almost scraping on the ground.  If the R31 springs are used in the S13 struts, it should sit overall about 20-30mm lower than factory (presumably with less droop travel).  If S13 coilovers are used, and the spring platforms wound right up, the car should also sit about 20-30mm lower than factory.  Other people found that the factory S13 struts were perfectly fine, so there is presumably some variation.



SR20DET S13s use 280mm x 22mm rotors, with a cast iron single pot caliper.  SR20DET S14 & S15 use a cast iron four pot caliper over a 280mm x 30mm rotor.

[[Image:Brake upgrade S14 caliper6.jpg|thumb|left|550px|R33 GTS cast iron two pot caliper left (280x26 rotor), S14 cast iron four pot caliper right (280x30 rotor).]]


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