R34 Gtr Brembo Calipers For R33 Gtst

[Nunga]

I have an S13 that has essentially all R33 GTST running gear (RB25DET, GTST box, GTST hubs and brakes). An opportunity has arisen to purchase R34 GTR calipers. My questions are- is it a fairly straight forward job in that I can use the existing rotors and simply remove the existing calipers and bolt the Brembos on? Or do I have to change the rotors as well? And if I have to change the rotors, what to? A GTR rotor, or can I get an aftermarket GTST set, like DBA 4000s etc? Also, is it necessary to upgrade the master brake cylinder, too?

Better yet, somebody has done the conversion and can help me out.

Thanks in advance

Edited May 11, 2009 by Nunga

[FineLine]

I did the same conversion with 33 gtr brembos in to a 33 gtst. same deal other than the colour of the calipers.

Its quite straight forward and yes I do think you need the rotors. They are larger in diameter than the gtst items.

I also fitted a gtr master cylinder.

Larger mounting bolts are about the only requirement. Other than that its pretty straight forward.

[Nunga]

Thanks for that, will look for some GTR rotors, too. I guess getting braided lines will be the way to go as well? Any change in the length of the lines? (I can't imagine there would be).

[Beer Baron]

yes you need the GTR rotors. also the bolts will be too large to fit through your hubs so you either have to get the caliper lugs helicoiled (well time sert actually) to accept a 12mm bolt, or drill out your hubs to accept the 14mm bolt. also, they wont fit under most 16 inch wheels. you'll need 17inch+.