32 Gtr Brakes

[Tomek]

My car is in prep for serious (semi ) track work..

buying bigger brakes and bigger wheels will be an expensive exercise so before I do it, id like to know whos running standard and what you guys have done for improvements..

My 32 GTR will be pushing 350-400kw ..

I've got some new slotted rotors on it, with some new KF750 pads and braided lines (group buy) to go onto it.. The car will be about 100kg lighter then factory which will aid in stopping..

Up here in Townsville the track and hill climb doesn't require huge amounts of braking.. The biggest speed deficit would be 140 down to 80 or so..

Any input?

Edited November 9, 2008 by Tomek

[josh23457]

My experience with the standard brakes was fairly dismal to say the least.

Car is a 32 GTR, running standard brakes, with air deflectors and 180awkw. The standard rotors just got to hot (only ever did four laps then a cool down) and continually managed to destroy a set of front pads every track day. (they were QFM race pads not sure what type). They are way understized for the weight and speed the car is capable of. So after much debate (the car is purely a dedicated track car, only driven on the roads to and from events) the decision was made to grab some 6spot ap racing calipers and 365mm rotors. Unfortunately i have not yet driven the car on these yet as it has been in the shop being treated to a few nice engine upgrades hoping to pull out 300awkw, so will let you know how it goes.

But please dont skimp on the breaks, they with suspension and tyres are the most important parts to a car. Spend the money if you can, and im sure you will never regreat it especially with the power you are aiming for!

good luck!

[GTRsean]

They are great when put on a 180 sx, thats about it!!

I have the stockers and they just ain't big enough to do the job repeatedly....

I'm looking at getting a 324mm upgrade kit from UAS and keep the same caliper.

[benm]

The standard brakes are ok for a completely stock car, but you have doubled the power so you will definitely need to upgrade those stockers, even if it's just a basic set of G4's.

[(OO)SKYLINE(OO)]

Standard R32 GTR brakes are not realy up to competition standards.

Best used for stock or lightly modded car.

I would aleast try to find a set of Brembo's from the V-Spec R32's or get R33 or R34 ones, if not then start pulling out the $$$ and get some Endless, Project Mu or K-Sport setups.

I would say brakes are one of the most important things to upgrade when doubling the kW's of your engine cuz you go faster, you better stop quicker.

[GTS4WD]

If you can't slow down, you wont get a slow time

Edited November 10, 2008 by GTS4WD

[bnr#@]

If the brakes are in good condition and have good pads in them they are perfectly fine. I use my GTR at the track (Barbagallo) and so far have not had any braking issues at all. Brake setup is:

- Standard Calipers all round rebuilt with new seals, pistons inspected and all in good working order

- RDA rotors all round (group buy)

- Project Mu HC+ Pads all round (absolutly awesome pad, 10 laps and no fade. Have Run 2 track days on these and around 10 000 road KM's and still have around 70% pad left if not more).

- Nissmo Braided brake lines all round

- Rebuilt/sleeved brake master cylinder

- Cusco Brake master cylinder stopper

- RBF600 Fluid

Car is a 32 GTR and weighs 1510KG with 3/4 tank fuel and driver in it. Power is around the 300HP ATW mark

Edited November 10, 2008 by bnr#@

[Tezzah]

I would say brakes are one of the most important things to upgrade when doubling the kW's of your engine cuz you go faster, you better stop quicker.

Don't forget to have tyres capable of transferring your stopping power =)

[hrd-hr30]

start by trying better pads and fluid and see how it goes. I used to run my R32 GTR with the sumitomo calipers at QR with TRW/Lucas pads and Penrite Sin 600degree fluid and they'd almost cope with 5 laps - you'd get fade towards the end of the 4th lap if you were pushing 10/10ths. QR is reknowned for being hard on brakes though. Better pads would have sorted it, so try the ones bnr#@ recommended. I didn't bother, I'd just run 4 hard laps and use the 5th as an extra cool down lap. You could also try some ducting to the centre of the disc as well. That was going to be my next step, but I sold the car. All pretty cheap stuff and will get you by if the budget is tight.

Next step up from there without spending lots of money is a set of caliper brackets that allow you to fit the larger disc under the sumitomo calipers. Or for a bit more money you could try and find a set of Brembos as someone suggested above. After that, the sky's the limit. They're the options from cheapest upwards. Find the one that suits your budget and amount of track use and how competitive you want to be.

[(OO)SKYLINE(OO)]

Don't forget to have tyres capable of transferring your stopping power =)

LOL! Yes as you know one thing leads to another.

[Tomek]

Thanks for the input fellas..

Im going to get the car on the road first, fit all the goodies I have and go from there. I know it's innetible (spelling) but just want to delay the upgrade. As a full motor/ turbo/ ancillery set-up isn't wallet friendly.

add; Will be running Toyo R888's all round on BNR32 wheels (hoping to go bit larger then 225)

Edited November 10, 2008 by Tomek

[bnr#@]

You don't want to go to much larger then 225 on those rims, tire will end up being to large for the rim and it will walk around on the sidewall killing response.

[Beer Baron]

I definately wouldn't go wider than 225 semis on an 8 inch rim. that will be fine.

[Tomek]

a 225 R888 would be a waste don't you think fellas? Would need more width (therefore more wheels) to actually make use of the car? Or would I be suprised?

Never driven a car with semi slicks..

I know a few of you here have, specially you Baron..

Do I sell stockers in favour of some 33 gtr wheels or do I wrap stockers in 225?

Tomek

[benm]

For the price you couldn't get a better circuit wheel for an r32 gtr than stock r33 gtr wheels.

[Tomek]

For the price you couldn't get a better circuit wheel for an r32 gtr than stock r33 gtr wheels.

Totally agree with that..

More so asking if it's the way to go? or just stick some R888 (225) on the stocker's which are great but not wide enough to accomadate more rubber, like I said never driven with semi slicks before. Have no idea on how sticky they are.. Doubt they would be able to handle 350-400kw thought ... lol.. actually im dreaming

[bnr#@]

If you dont already have the 888's then get the bigger wheels first then shove some simi's on them (I use 255 RE55 on 9 inch rims). If you already have the tires though stick with that and go hard

[Duncan]

.....Up here in Townsville the track and hill climb doesn't require huge amounts of braking.. The biggest speed deficit would be 140 down to 80 or so.....

even though you are expecting pretty big power, with short runs like a hill climb (less than 10 stops per run), standard brakes should be fine. just put in good pads (not requiring too much temp or it wont stop for the first, cold, corner), braided lines and maybe 2 piece standard size rotors for ease of maintenance.

at least try them before you change them, in good condition you will be surprised how good the standard brakes are.

[Tomek]

even though you are expecting pretty big power, with short runs like a hill climb (less than 10 stops per run), standard brakes should be fine. just put in good pads (not requiring too much temp or it wont stop for the first, cold, corner), braided lines and maybe 2 piece standard size rotors for ease of maintenance.

at least try them before you change them, in good condition you will be surprised how good the standard brakes are.

Thanks for the input Duncan.

Leech PM sent

[DSTROY]

I just thought i would just post this pic up to show people what happens to 32GTR cross drilled rotors when you take them to the track. Ive now upgraded to RDA cross drilled all round but yet to take it back to Mallala.