Right Bbk For R34 Gtr

[Mr I Want One!]

I'm hoping someone can answer a simple question for me on BBK's for an R34 GTR running LMGT4's Omori Special Editions 18x9.5 +12 Offset.

I'm looking at upgrading the brakes but am a little stumped on the right size rotor to run and number of pots. I'm interested in getting the Brembo GT's but I'm positive the 355mm front and 330mm rears recommended by Brembo can definitely be increased, but I just don't know by how much and what ratio.

I.e 365mm front with 6 pots and 350mm rear with 4 pots or 365mm front with 6 pots and 345mm rear with 4 pots, etc. (just using these as an example)

Can I safely go bigger than 365 up the front (say 380mm) and then what's the best option for the rear?

I'd really like to hear from someone with some experience with these brakes, what works best and how big can I go safely with these wheels. I'm also not into using spacers, or fancy brackets etc to make them work.

While I mention Brembo here, I'm not adverse to Alcon or AP, but am kind of keen to keep Brembo brakes on the beast.

Hope someone can help.

[KiwiRS4T]

To what end are you upgrading the brakes? Is it a track car? Stock brakes with better pads, brake fluid, a mastercylinder stopper and braided brake lines will work well.

[Mr I Want One!]

Lets call it spirited driving and the occasional track day. The standard brakes are not bad, but I've changed rotors, different pads and they just aren't up to the task anymore. The car will also be getting a big upgrade in power in the near future, so I want to future proof it some.

As I'm overseas at the moment I can purchase items a lot cheaper then back in Australia, so I might as well make the most of it while I'm away.

Regardless of the use, I'm looking for a decent brake kit to look after 500+ awkws

[lidz]

Have you had a look at this thread:

http://www.skylinesaustralia.com/forums/topic/415203-which-big-brake-kit/

Quite a few guys have gone the alcon set linked in the thread which use 365mm with 6 pot fronts & 350mm with 4 pot rears

[Mr I Want One!]

Thanks Lidz,

Took a good look at that forum and it provided an interesting read. Just wish I knew if the Brembo GT calipers were similar dimensions to the Alcon ones. Anyone have any experience with the Brembo GT kits?

[Mr I Want One!]

Ok let me try a different approach...

Does anyone have experience with the Brembo GT kit running 365mm rotors up front with LMGT4's 18x9.5 +12 offset? If so what clearance do you have between the caliper and the wheel?

Hope someone can help.

[R32GOJIRA]

The guys at Croydon Racing Developments run the Brembo GT kit on their R34 GTR with 18" TE37s.

The LMGT4 is a very similar designed rim so clearance wont be an issue.

Their car has (im pretty sure) 8 pot fronts with 376 or 380mm rotors and they sit well.

I have a set of Alcon 6pot calipers from a Daytona LeMans Prototype on a 375mm rotor. Dummy fitted up, they just squeeze inside a 17x9.5 +12 TE37 with about 5mm of clearance radial wise. Plenty of caliper clearance behind the spokes.

The alcons are also a larger body caliper compared to the Brembo GT, so that coupled with a smaller diameter, eg 365mm, you should have no problems fitting it into an 18" LMGT4.

Also, if you ask nicely, Im pretty sure Matt (God_speed) on here is running the GT kit under 18" LMGT4s. I could be wrong.

Hope that helps.

[GTR_JOEY]

Mate, I can pretty much guarantee there will be plenty of clearance with LMGT4s, my LMs are exactly that size 18 x 9.5 +12 offset

im running an evo 10 kit with 350 (355mm) brembo kit on the front and there is still heaps of room. Piggaz also used them on his R33 over his Alcon big brake kit and im fairly certain he still had heaps of room as well.

[C4a0s]

i think i may have the cross section diagram and dimensions of the GT brakes somewhere...if u're interested.

[Mr I Want One!]

Really appreciate all the information guys, it's good to hear they will fit.

C4a0s If you could provide the diagram and dimensions that would be superb!

[R32GOJIRA]

Even if he cant find the diagrams, you should be able to find the drawings on the brembo website.

[Mr I Want One!]

I couldn't find the diagrams on the Brembo website, I'd say I am looking on the wrong part of the site, but I would just like to thank everyone who has provided input, its very much appreciated.

[R32GOJIRA]

You could just shoot brembo an email and im sure they would be happy to help you and send you the profiles of what you are after.

[brad-33]

Try Race Technologies, I run the GT kit 355 fronts and 345 rears on my Supra and the alcon 365 and 350 on my 34 Gtr, both are a good set up and probably the best money you could spend. The supra runs 18 inch Drifteks which i think are a knockoff nismo? they clear by a mile. The alcons are under Enkei Rpf1. I know the Brembo 380mm rotors template wouldnt fit under the driftek but have heard they go under TE37s,

[mxfly]

I had endless 6 pots, 370mm rotors and the te37 18x9.5+22. Just fits under. CE28 and LMGT4 will also fit.

[C4a0s]

Really appreciate all the information guys, it's good to hear they will fit.

C4a0s If you could provide the diagram and dimensions that would be superb!

oops... didnt see this thread for a while..

PM your email and i'll send them to u tonite?