Brake Upgrade Brackets

[Duncan]

32 gtr say nissan (and have fins), 33 gtst are sumitomo. both are near enough to the same other than those detail differences.

[pipster11]

aren't 32 gtr non brembo brakes the same diam as 33 ones but 32mm thick?

in other news, i got my 34 fronts today and painted them, will be fitting them up tmrw

just wanna ask some opinions, should i just remove the olive restrictor thingo or cut the bango down? will i need the olive if i wanna put skyline brake lines of (its a stagea and has a 2 pot sliding callipers stock so its got a flexi brake line)

[Roy]

Maybe r32 and r33, gtr and gtst and z32 calipers are different in this regard. To fit them to a set of 330mm discs, we had to grind the inside edge of the caliper almost all the way to the bolt that holds the caliper together, which i consider far from optimal. This allowed the edge of the pad to be almost flush with the edge of the disc with the inside of the caliper being about 1.5mm from the disc. However maybe the calipers were different, or the pads, or even the discs possibly. We did question this at the time as i knew UAS sold brackets, and we couldnt see how this was done commercially. PS Im not sure which calipers we had(They all look the same, but i was told they were 33gtst)

I ran a bracket on my R32 GTSt from 2001 to about 2008 on and off as i swapped over brake setups. The 324mm adaptor kit is easliy the best value upgrade you can do to your brakes.

I experienced the problem you described with various brands of pads. Race Brake pads were variable, one set woudl be fine the next not. Endless were fine. DS2500s and DS300s overhung. So its more to do with the palcement of the pad material on the backing plate.

If you are going to use R32 GTR or R33 GTSt calipers then i really dont like the 3 piece brackets that are laser cut. Machine them up out of a single piece of billet. When you consider that a few thou of pad deposits on a rotor results in a vibration through the pedal, i would not want to be relying on a bush on a backing plate being compressed together in a braking system.

I would still be running this setup if DBA still made decent quality DBA4000 rotors,. Whatever they did between 2001 and 2006 made them a lot less durable and I was frankly sick of failing rotors so went to aftermarket setup.

[bubba]

I have seen similar design brackets as I am running, using 32gtst calipers (for a 280mm rotors), these had been ground out rather severely on the inside to get the caliper to fit over the rotor.. they were the wrong calipers for those brackets. Meant for 33gtst rotors which have longer legs to suit a 296mm rotor, the 32gtst calipers sat 8mm further in, so trying to run 330mm rotors with a 33gtst caliper on brackets meant for 324mm rotors, it's going to clash.. even more so with 32gtst calipers. If the brackets are designed for the calipers to be used, there shouldn't be any real issues with a 324mm rotor setup.. I wouldn't really be going much larger with stock type calipers (hard to find discs in the correct offset though).

Why you'd need anything bigger if you're not running huge slicks is beyond me.. but then you're talking big $$ race car and should be using big $$ brake setups.

I will have some new brackets cut soon that should hopefully solve the problem of clashing with the lower ball joint on 4WD hubs so I can fit some bigger brakes to my heavy ass daily wagon

EDIT: As far as material choice and design, I am a Structural Designer by trade and am confident in the design and materials, maybe one day they will get signed off. I will say I'm not a fan of aluminium brackets, particularly for road use and in the L shaped design I have gone with it would be a really bad idea. The more traditional "dogbone" shaped brackets only really work with larger offsets so you retain adequate edge distance around the holes and even then I wouldn't be going too large.

Edited July 4, 2010 by bubba

[Burgz32]

You can buy the bracket to put 32 GTR caliper's over a 324mm brembo rotor from Unique autosport..

Complete kit $850, or the bracket's are $350..

http://www.uniqueautosports.com/

[pipster11]

You can buy the bracket to put 32 GTR caliper's over a 324mm brembo rotor from Unique autosport..

Complete kit $850, or the bracket's are $350..

http://www.uniqueautosports.com/

yeah i saw those, but they are designed for 12mm r32/r33 bolts so i'd have to drill them out anyway

got my 34 fronts on - $500 for the whole thing so i can't complain about that

it would have been over $1k with the 324mm rotors

[Willis]

You can buy the bracket to put 32 GTR caliper's over a 324mm brembo rotor from Unique autosport..

Complete kit $850, or the bracket's are $350..

http://www.uniqueautosports.com/

Is this upgrade designed for the 32 GTR brembo's or the 32 nissan GTR calipers? Been doing some reading on this mod.

[Beer Baron]

it's designed to be used with the standard GTR sumitomo's that run 296mm rotors. so you keep your sumitmo caliper and move to a 324mm rotor. the 32 brembos already run with a 324mm rotor so obviously this kit would be of no use to anyone who already has the 32 or 33 brembos.

it's a good value upgrade. add another $100-$150 and rebuild your calipers at the same time (new seals etc). pretty much any set of 32 GTR sumitomo's i've looked at was due for a seal kit.

a 32 GTR with a set of 324mm front rotors, rebuilt standard calipers, some good pads and fluid is a good start for some spirited driving and the odd track day.

[Willis]

Sounds good to me, i guess the question now is "what rotors" ha, there is heaps of threads on that though .. so i guess i'll go dig some up.

1 piece or 2 piece rotors? Main difference's? Project Mu has some nice rotor kits or should i just get the DBA that come with the kit from unique autosports?

[Roy]

If it was me and needing rotors , then i would go for std Nissan / Brembo replacement rotors. The std Brembo rotors on GTRs are 324m and better quality then anythign DBA. Would be interesting to know what Nissan charge as a replacement cost.

If you want 2 piece then given the current exchange rate then best fork over the extra cash and get some two piece Stoptechs.

[Beer Baron]

troys advice is sound. I'd price up a set of nissan 324mm rotors. if too expensive and you want 2 piece then look at stoptech (great stuff from the US) or the project mu's if you can get them for reasonable money.

[Willis]

troys advice is sound. I'd price up a set of nissan 324mm rotors. if too expensive and you want 2 piece then look at stoptech (great stuff from the US) or the project mu's if you can get them for reasonable money.

Project Mu is looking expensive (1k+ for the their second best rotor) .. will have a look into stoptech. Whats the main advantage with 2 piece? Is it that you can just replace the disc when it wears out and keep the same hub?

To price up some original gtr rotors.. just call up a nissan dealer?

Also what are you opinions on the best rotors .. Slotted? Vented .. or Cross Drilled?

Edited October 29, 2010 by Willis

[Duncan]

yeah that, and they are a fair bit lighter with the aluminium hat.

project mu might be good but they are dear as poison.

dba4000 or rda for street/light track. dba5000 for track. anything else if you are a brake whore or have too much money.

[Willis]

Where is the best place to buy these brackets? Should i really be paying $300 + for them like on Unique autosports?

[Roy]

...anything else if you are a brake whore or have too much money.

LOL, yep, that just about sums it up. I have turned into the guy i used to despise..spends money on a car and it never actually gets driven

Alloy hats also make the rotors run cooler as the alloy dissipates heat better and also means the heat doesnt get into the bearings of the wheel as quickly. Does it make a difference...if you say it does then I think you have missed your calling and should be a development driver for a race team

Stop and think about materials, machining time, wastage of machined part, drilling and tapping and then trying to make a few dollars from making them. All of a sudden $150 each seems cheap.

Edited October 31, 2010 by Roy

[Willis]

Stop and think about materials, machining time, wastage of machined part, drilling and tapping and then trying to make a few dollars from making them. All of a sudden $150 each seems cheap.

$150? Where do you get these for 150bucks?

Unique autosports is $350-$395 for adapters with high tensile bolts ..

[Roy]

Read what I typed again....$150 each is cheap. LIke you say, throw in some high tensile facteners and washers etc, plus margin....you can see how they can cost more unless you are the one (or friend/family member) putting the time into milling them up etc.

Edited October 31, 2010 by Roy

[Beer Baron]

yeah, try and get a machine shop to knock up a design on CAD for you, then buy the alloy or steel and get it machined up, then get the holes drilled and then tapped or heli-coiled, then buy the right bolts and then hope this thing fits and it has to be 100% spot on or you are in for all sorts of fun brake problems. think about all that and then realise that $300-$400 for a pair of proven adapters is an absolute bargain.

as far as rotors go. yes you want vented (anything you look at for the front of a skyline will be vented). and ideally you want slotted. avoid cross drilled if you can. then it gets down to straight vane or curved vane. at the money we are talking most likely only option will be straight vane which is fine. 2 piece vs 1 piece. like the guys above said, lighter, better heat dissipation, plus they look cool. downside is they cost a shitload. for most applications 1 piece is fine. yep for standard nissan stuff call a nissan parts dealer and quote your chassis number. well in this case quote the chassis number of a BCNR33 GTR since you want 33 GTR brembo rotors.

[Tangles]

http://www.conceptzperformance.com/Cart/de...031121.45.65.61

fits r32 gtst and s1 stagea (confirmed)

good price at around $225aus delivered

[Roy]

Just make sure you use the 350Z rotor as opposed to the GTR rotor as they have a different offset. From memory the 350Z rotors may be cheaper