Editing Brake Upgrades Miscellaneous (section)

==Standard Z31 Strut/Brake/Hub==

[[Image:Brakes_z31_0.jpg|thumb|left|400px|200B strut, similar to Z31, caliper towards front of car.]] 

[[Image:Brakes_z31_1.jpg|thumb|right|300px|Rotor bolts on to hub from behind.]] 

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[[Image:Brakes_z31_2.jpg|thumb|right|300px|Matching steering arm required to use Z31 strut.]] 

There are several flavours of this setup.  There's at least an earlier 274mm x 22mm rotor, and a later 280mm x 26mm rotor.  The rotor and the hub are separate, but on the early ones the rotor bolts onto the hub from the rear, so it's quite different from the later slip-on floating rotors.  The caliper mounts in front of the strut, 100mm bolt spacing.  The strut top may need changing for the R31 top.  The Z31 steering arm needs to be used, as the bolt spacing is different.  Rotor upgrades are difficult on this hub, you'd possibly need to find a pair of HR31 hubs to do anything else with this.  Today we have a 200B strut standing in for the Z31, but it's very similar in terms of the bolt-on-rotor.


[[Image:Brakes_z31left_passageright.jpg|thumb|right|300px|200B strut left, Passage strut right.]] 

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[[Image:Brakes_z31_hub_84-86.jpg|thumb|right|400px|84-86 turbo Z31 hub.]] 

A five stud conversion is possible with some Z31 hubs.  Here are some 84-86 turbo hubs.  Once these are on the car, again you're pretty much stuck with the Z31 rotor.

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[[Image:Brakes_z31_hubs_front.jpg|thumb|right|400px|87-89 turbo Z31 hub on HR31 strut.]] 

This is a late model (87-89) Z31 hub. They are almost identical to the HR31 4 stud hub (same bearings and dust seal) except the hub face sits out about 5mm more. This is perfect for 32 GT-R and 33 GTS-t rotors as it keeps them away from the control arm.  On a HR31 strut with Z31 hub and 32 GT-R disc, the caliper needs to be spaced out approx 2mm to centre it on the disc.

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