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Upgrading Brakes Need Help

beau_32
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beau_32 Collaborator

beau_32

Posted
Posted

hey guys, have a 32 gts and was looking at putting 32 gtst rear brakes on it. i got hold of some brakes, lines and rotors that came off a r31.

which i thought i killed 2 birds with 1 stone with getting 4 stud rotors.

BUT turns out the center of the rotor that goes over handbrake shoes is to deep and when wheel is tightend up fully it fowls the hub and

wont let wheels spin >_<

so just wondering what rotors i need to get? 32 gtst 1s and redrill to 4 stud? has anyone else ran into this issue?

should also add that front is already upgraded to 32 gtr calipers and rotors before people think im a total nut lol.

thanks in advance

beau

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StevenCJR31 Veteran

StevenCJR31

Posted
Posted

im thinking the best/easiest/cheapest upgrade for you would be to throw on R33 brake calipers/rotors/5stud hubs etc, that would open up a whole lot of wheel options for you as well, the 31 stuff taint the best especially the handbrake setup

beau_32 Collaborator

beau_32

Posted
  • Author
Posted

sorry i musnt have made sence.

the only thing 31 is the actual rotor, standard 32 handbrake set up and 32 gtst calipers...

only reason i tried those rotors was cause they are 4 stud already.

not too keen on goin 5 stud as i have a set of LMGT4's on it now which i think look good!

thanks for your reply though dude.

cheers beau

gslrallysport Experienced

gslrallysport

Posted
Posted

The majority of the breaking effort is taken by the FRONT brakes. I can't see any great benefit in changing / upgrading the rear brakes.

Not quite...

With regards to the rear brakes, probably the biggest mistake people make is neglecting the rear because they beleive it does less work. Yes it's true that the rear 'axle' as a component does less of the overal vehicle braking, but it's also got substantially smaller hardware in which to do it with, so the actual 'brakes' themselves can often work nearly as hard as the front ones do. What can happen if you neglect the rear is that end starts to fade out slowly without you noticing, and it puts more pressure on the fronts, which causes them to fade, and people blame the front for a problem caused by the rear.

GTSBoy Grand Master

GTSBoy

Posted
Posted

Yuh, the overall lesson is not to upgrade the rears on their own, but if you do a reasonable upgrade on the front then you should upgrade the rears as well if you can.

Even a smallish upgrade on the front will change the balance. I was convinced I had too much rear bias with standard R32 brakes. Same pads all around, which was probably the cause - I think OEm pads use a better coefficient pad material on the front. Anyway, put R33 calipers and discs on the front, so a small overall upgrade, but significantly changed the behaviour of the car. Wasn't so likely to lock a rear brake any more (especially the inner rear when late braking heavily into a corner). Much improved the balance in my estimation. If I were to use adaptors to push my front calipers out to use 324mm rotors, I'd start to worry about overdoing the bias change.

beau_32 Collaborator

beau_32

Posted
  • Author
Posted

interesting replys guys, making me think i should get these rear brakes on, as i have 32gtr fronts and 32 gts rears.

that cant be good for the balance... :O

so back to 1st question has anyone upgraded 32 gts brakes and what to and how did they go about it???

cheers beau

GTSBoy Grand Master

GTSBoy

Posted
Posted (edited)

Well, the answer to that question would have to be another question.....Wouldn't it be trivial to upgrade to GTSt brakes?

And yes, I know you said you've got some 4 stud wheels you want to keep, but that's a different problem. What are you running for front wheels?

Edited by GTSBoy
beau_32 Collaborator

beau_32

Posted
  • Author
Posted

ummm any given brake set up? Ok... Im asking the question if these are good to use as I want to better my rear brakes, no need to be narky mate, im greatful for the help though... And my 1st question was what rotors can I use with the 4 stud gts rear hand brake set up, if 32 turbo rotors will fit, thats exactly what ill do as I have done that with the fronts... But I didnt want to go ahead and order them if they were going to turn out to deep like the ones iv just tried

Cheers

GTSBoy Grand Master

GTSBoy

Posted
Posted

I wasn't being narky.

Have you looked at the DBA site's disc catalogue to see how compatible the R32 NA and turbo discs are (in terms of how they connect to the hub, hat depth, the size of the handbrake surface inside, as much as anything else, and ignoring the 5 stud/4stud thing)?

erik Community Regular

erik

Posted
Posted

looked at r33 gts brakes? The non turbo r33 front brakes are basically the same size as the turbo r32 brakes so i'd imagine the 33 non turbo rears would be a good option, plus they're already 4 stud

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