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Upgraded My Brakes.

Aggroman

By Aggroman,
in Engines & Forced Induction

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Aggroman Grand Master

Aggroman

Posted
Posted

Hey all.

Was going to post in the Brakes section but seeing as its a N/A type question and the people that have done the upgrade or are planning to do it are more inclined to visit this section i posted here..

If it should be moved to the brake section by all means feel free to move it..

Anywho my question is as follows..

I just picked up a set of r33 GTS-T rotors and calipers for my 34, i researched that they would bolt directly on no problems..

Nobody seemed to mention that i would need a bigger master cylinder/ brake booster (not sure if they are the same part, i think they are).

But i thought i may as well inquire about it, would i need to get one to be able to do the conversion. Or could i get away with it for a while or forever??

Thanks for any and all input everyone..

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N-DAWG Mentor

N-DAWG

Posted
Posted

Done the same conversion last month on my R34 Sedan.

You don't "need" to change the master cylinder, but it's a good idea if you have one to do so, so that you get the correct brake bias. I'm not 100% sure on the brakes ont he R34 N/A Coupe, my sedan had 280mm front and 265mm rear, upgraded to 297 front and 297 rear. I THINK the N/A Coupe is different. Someone posted once before saying they're the same as the R33 GTS but 5 stud.. so may need to verify.

The guy I bought my R33 GTSt brakes from had the master cylinder to suit so I changed it also. If you're going to flush the brake system you might as well do master cylinder if you have the matching one.

Also if you don't have brake hoses for the R33 GTSt brakes, you'll need them also as the factory ones on the N/A are a bit different with the way they connect to the caliper. Good idea to get the ADR approved braided hoses from Brakewest in the Group Buy, or go direct. Goran from Brakewest is really helpful, I took photos and measured up the lines on my R34 Sedan and he has made them to suit the R33 GTSt brakes. They should be pretty much the same for the Coupe...

Also the workshop that done my brakes ended up modifying my existing brakes to fit the R33 GTSt calipers and rotors and didn't have to use the R33 hubs/uprights. There are a pair for sale on eBay at the moment though (not mine, they already sold, no idea who's selling the ones listed at the moment) if you wish to do bolt on.

R34GTFOUR Mentor

R34GTFOUR

Posted
Posted (edited)

The na master cylinder will do the job.

My brother has gtst brakes on his gts and he kept his gts master cylinder, all good.

If you were really going to go crazy on the brakes to the point of upgrading the master cylinder you would be looking at bigger calipers than the gtst stuff.

The only other thing to do as mentioned above is to get the gtst brake lines as the na calipers use a different line going on the caliper itself. Other than that its pretty straight foward.

Edited by R34GTFOUR

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