S14 front brake set up

[30psi]

Yeah could be easier to save the hub machining by using the larger M3 discs.

I ended up overcooking some rear brakes, the vented Z31 discs may be a reasonable type of upgrade option if someone was going to change the discs.

Its also not necessary to change the front wheel bearings when its been upart.

[PukkaSilvia]

Im surprised if you found the std rear brakes to be insufficient

What happened?


A healthy setup with decent pads and at most a few grooves is all that should be needed

[30psi]

On really heavy use they overheated to the extent that they were smoking and faded. At first I assumed the rear calipers were seized on, but they turned out to be free when I jacked the car up.

The vents must count for a lot but don't know if you'd feel the difference unless you are going really heavy on them.

Unfortunately the brakes are great on the S12 but just don't stand up to continued heavy abuse.

[PukkaSilvia]

Was this still with std front calipers?

[30psi]

Yeah but note that the rear were more knackered than the front. Reason I got out the car to look was the smell and whiffs of smoke more than anything. But kids, if you do cook your brakes don't remain stationery as it can warp the discs as the disc cools unevenly.

I haven't driven my Datsun in anger enough to see how the rear drums fair up after some abuse. Not used the brakes to any decent capacity on that if I'm honest. Only tested to see if the balance has gone a wrongun with the Z32 calipers.

The S12 has a 1" master cylinder, which is actually bigger than an S13 ones, so its not essential to upgrade to the Z32 ones which is a plus.

[doski]

Dans big brake kit would be another good alternative, you would prop have to be running a set of bigger alloys than just the standard 15's. Just found out that my mate has got a set for sale now Things like that always come around after you have done something else.

[Sharas]

Whats the smallest wheel that fits on the brakes, i bet it's r16.

And about the rear brakes, not that they would be insuficinet or anything, its just that it is very hard to find parts for them (like lets say rotors, i ende up using z31 non turbo solid ones, identical excpet for the 5 hole mounting setup). On the other hand, i doubt that the z31 ones (the good, vented ones) wouldnt be any better.

[s13eater]

Originally Posted by 30psi

Yeah could be easier to save the hub machining by using the larger M3 discs.

I ended up overcooking some rear brakes, the vented Z31 discs may be a reasonable type of upgrade option if someone was going to change the discs.

Its also not necessary to change the front wheel bearings when its been upart.

i borrowed a bmw disc mart and the disc still will not fit over the s12 hub, it needs a couple of mm off of the s12 hub, do i use one of the holes on the bmw discs as well ?

[30psi]

That's weird when used on an s13 hub the BMW disc is too large a centre bore. You could use one of the BMW holes but it will need to be ovaled a bit to match the pcd. The other 3 will need drilling

[s13eater]

i've got r32 calipers now and found out they sit further away than the s14 calipers, so in theory i could use gtr 295mm discs with a 11.5 mm spacer like doski has used, only for some reason r32 discs are extortionate price at £150 each, i'd like to use bigger discs but i could live with 295mm instead of 274mm std ones, i'am not going to be trackin the car only straight lining, so they should be adequate until next year, then i will probably do what you have done mart.cheers for the help.