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322mm Gtr Disk On R33 Gtst ?

discopotato03
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discopotato03 Grand Master

discopotato03

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Hi Ronin , can I assume Nissan used the same disk dimensionally on the Brembo 350Z rear as S2 R34GTR ?

I ask because if this is the case then the disks would be locally available and in std form not too bank breaking .

I ask because my R33 GTST will be up for pads and disks soon so I though why not a slight upgrade at the same time . Did Roy get the brackets made or at least work out the dimensions ?

Cheers A .

Ronin 09 Grand Master

Ronin 09

Posted
Posted

dave - I think it's the same bolt spacing and offset...

A - don't think he's had a chance to give it a crack yet... I made the assumption that the R34GTRS2 are the same as 350z to keep it simple for them at the factory. I actually have a set of 350z rotors in the garage in anticipation for the brackets :mellow:

I'll have a hunt around and see if anyone makes them eg in Japan

You're right - i think it would be an OK slight upgrade, also because I'll be going from std R32 rear (297mm??) to 322mm, and the car will have 355 APs on the front

Will keep you posted, cheers

discopotato03 Grand Master

discopotato03

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I'm thinking along the lines of std GTS25T calipers all round but out on larger diametre disks of same or similar diametre (324 fronts) . My R33 has no ABS (swoon/cheer) and I'm hoping not to have brake bias problems .

Thoughts ?

Cheers Adrian .

Ronin 09 Grand Master

Ronin 09

Posted
Posted

Adrian,

Not sure that you'll be able to use the GTR size rotors on GTS25t calipers, because the rear caliper for brembo takes a 22mm thick rotor versus a 18mm thick rotor for the Sumitomo calipers...

I don't think the GTSt calipers have the bridge thickness to fit the 22mm rotor...

These guys do a 320mm x 20mm kit for the standard caliper that may work... but means you have to run their particular rotor.

I've sent them an email regarding the brackets for the GTR33 rear rotor -> 350z rear rotor conversion... hopefully their kit doesn't change the caliper offset - otherwise it will mean you have to use their particular rotor as well.

http://www.biot.co.jp/parts_brake/offset_k...etkit_rear.html

will keep you poseted to their reply.

cheers, marcus

Ronin 09 Grand Master

Ronin 09

Posted
Posted
Hmm , me thinks offseting the caliper 2mm inwards and using a 4mm spacer plate (assumes caliper is two piece) may work provided it had a reliable hydraulic seal .

Cheers A .

I have seen people space an AP5555 caliper in this way to get a wider rotor... in theory should be ok to do, but I haven't seen anything wider than 2mm fillets - I think RaceBrakes Melbourne have done it before.

I haven't seen the inside of a 2 piece caliper, but it may have a crush male/female or cone section join for the interface between the two sides... pull one apart and let us know :D

cheers

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