Brakes!

[rad100]

yep thats exactly what ill be looking at running. but on my 32gtst calipers. what width are 350z rotors? 30mm or 32mm.

and will the gtst calipers need to be machined to fit the 324mm rotor?

[bubba]

yeh i saw a thread which outlined what u meant about having to grind the inside of the caliper away..

so this def has to be done on a r32 gtst caliper?

cheers

It depends on the adapter bracket, most are to suit 33gtst/32gtr calipers.

I have laid out the geometry for 32gtst calipers but have changed jobs twice in the last few months and as such haven't had the time or money to get prototypes cut up

Edit: I'm not sure what the offset of those 350Z rotors is but the 350Z rotors (290mmish) that I have on my Stagea are a completely different offset to skyline rotors (they suit the series 2 Stagea calipers). The rotors I'm running on my skyline are 33GTR items and this is what I would suggest you look for.

Edited September 16, 2010 by bubba

[rad100]

so u looking at making a braket? if you make a kit i would be keen on one!

this kit im looking at is to suit r32gtr non brembo. $400 posted with 350z rotors.

so i would need to machine the inside?

[bubba]

from nismo.com.au

STAGE 1 BRAKE UPGRADE KIT FOR SKYLINE R32-33 GTS-T

FRONT UPGRADE KIT

INCLUDES 324MM R34 GTR DBA 4000 SERIES ROTORS, HEAT TREATED AND KANGAROO PAW SLOTTED. BILLET ALLOY ANNODISED ADAPTERS & HIGH TENSILE GRADE 12 ALLEN KEY BOLTS UTILIZING THE FACTORY CALIPERS.

PRICE: $850 FRONT ONLY

Adapters and high tensile bolts and washer without discs $350

Two peice curved vane rotors with adapters $1195

[bubba]

so u looking at making a braket? if you make a kit i would be keen on one!

this kit im looking at is to suit r32gtr non brembo. $400 posted with 350z rotors.

so i would need to machine the inside?

I am looking to do a variety of brackets but probably not going to happen for a little while. What kicked it off was trying to squeeze bigger rotors on to the wagon and the brackets I had for my 32 didn't fit on the wagons' 4wd hubs.

More than happy to share what I have learned though

If the kit you are looking at is to suit 32GTR (non-brembo), but you want to use 32gtst calipers then yes, I'll put money on having to machine the inside of the calipers. The reason being that the 32GTR caliper are to suit 296mm rotors and thus have longer "legs" than the 32GTSt calipers which are to suit a 280mm rotor.

[Moodles2]

Before you go ahead and buy the adapter kit from UAS, ask if they still recommend them for track usage, as they used to have a warning that they weren't suitable for motorsport applications.

[bubba]

Before you go ahead and buy the adapter kit from UAS, ask if they still recommend them for track usage, as they used to have a warning that they weren't suitable for motorsport applications.

I'd be more worried about using them for street duties being that they are ally/alloy.

[Tangles]

yep thats exactly what ill be looking at running. but on my 32gtst calipers. what width are 350z rotors? 30mm or 32mm.

and will the gtst calipers need to be machined to fit the 324mm rotor?

324x30mm = 350z track rotors front

rears are 322 x 18mm

non-track model are 307mm at rear

Id suggest you'll need r32 gtr or r33 gtst calipers. 300zx will also suit. not sure about r32 gtst calipers....

[ssxRicho]

Before you go ahead and buy the adapter kit from UAS, ask if they still recommend them for track usage, as they used to have a warning that they weren't suitable for motorsport applications.

the dba4000 rotors will crack, but the adapters have been on my car for well over 20 track days now. no problems.

[Nee-san]

the dba4000 rotors will crack, but the adapters have been on my car for well over 20 track days now. no problems.

What have people here done in the way of GT-R brake upgrades such as adaptors to fit larger discs, im toying with the Idea of retaining my GT-R calipers but trying to fit a way bigger disc (330mm++) and Am interested to know what people think ?

[Roy]

Lets break them up to which rotor they use. Since they all use the same pad, piston size and lug mount PCD the only major difference is the length of the lug (as has been pointed out) You have:

280mm Caliper: R32 GTSt (ALLOY), S14 200SX (STEEL), S15 200SX (STEEL) Z32 300ZX (ALLOY),

296mm Caliper: R32 GTR (ALLOY), R33 GTS25T (ALLOY)

310mm Caliper: R34 GTT (ALLOY)

324mm Caliper: R32/R33/34 GTR (ALLOY)

I have never put the 280, 296 and 310 mm calipers side by side to see if there is a difference in the curvature, or ID of the caliper. If you run certain brands of pads with the offset caliper then you will find that some overhang off the edge of the rotor face.

But it is advisable that you simply chamfer the outer edge of the pad down rather then machine the caliper. It seems some brands of pads place the pad comound slightly differently on the backing plate, so when I used a spacer for a 324mm rotor and a 280mm caliper, some pads had overhang, others were pefect.

So all the kits for sale are typically two generic types, one for the 280mm calipers which simply offset the caliper, and the brackets for the 296mm whcih clocks and offsets the caliper. It does this because the bracket is nto big enough to only offset the rotor 28mm and have 4 big holes drilled and tapped in them whilst being sturdy. I am not aware of any weight difference between the alloy family of calipers, be it R32 GTSt or R32 GTR caliper. If someone has weighed them then would be interesting to know, but suspect the only difference in weight is the difference in amount of alloy used in them, and with the R32 GTST/Z32 300ZX calipers having longer lugs for mounting then perhaps they are 50grams heavier

There is nothing wrong with them being out of alloy provided they are well made from the correct grade of billet. If you use them for motorsport with aggresive pads you may find that they are too hard on some brands of rotors and cause cracking. If you buy the correct bracket for the caliper you plan to use then there should be no need to machine the caliper. If you do then something is wrong.

Edited September 16, 2010 by Roy

[Nee-san]

What have people here done in the way of GT-R brake upgrades such as adaptors to fit larger discs, im toying with the Idea of retaining my GT-R calipers but trying to fit a way bigger disc (330mm++) and Am interested to know what people think ?

Guise ?

[rad100]

well i have decided on r34 gtt brakes, dba4000 310mm rotors..

should stop well on the 32 without having to run adaptors..

caliper is meant for the pad and the rotor..