Weight conscious Z32 brake upgrade

[cdlong]

I’ve always wanted to do a z32 swap on my car but I’ve helped a few guys do it on their cars and noticed that the rotors weigh a ton. I’m somewhat obsessed with weight so I didn’t want to add a lot to my car if I didn’t have to. The stock brakes are almost good enough, but I haven’t upgraded to super sticky race rubber yet, I’ll probably change my mind after I do in a month. So I’m looking for a way to drop some weight off the system. Two piece rotors would be a great solution. The problem is, no one seems to make a 2 piece rotor for the stock z32 caliper, they are all for a big brake package. That defeats the purpose for me because a huge 2 piece will weigh about as much as a stock z32 rotor and is major overkill for my needs. And I need something that will fit under my 16”wheels (stock s14 SE alloys and R32 GTR). I’ve checked with every rotor manufacturer I can think of but can’t find anything just right, most of them don’t list any info on their rotors specifically. Here’s the best I can come up with.

AP racing has discs that will fit but I can’t find any info on the hats. Arizona z car would make custom hats but only in a minimum of 100. Not to mention that each rotor is $180.http://www.apracing.com/car/br...160/1

Wildwood has discs that are the right diameter but 20mm thick. I could separate the z32 calipers and machine out 6mm and put them back together. It would theoretically work but I’m still not sure they have any hats that would work. http://www.wilwood.com/Product...x.asp

I’ve thought about using r32 gtr calipers (296x32mm rotors) or 3000gt upgrade kits for those rotors (317x30mm I think) just to find a disc and hat combination that would work, but I haven’t found anything right there either. I’m really trying to avoid adapter plates or any custom parts to keep it simple and to keep the cost down.

Any tips on where to look or ideas to make this work would be greatly appreciated.

[Nismo_Freak]

Project Mu, Biot, and other JDM brake companies produce two-piece OEM diameter brake rotors. They are very expensive though.

That AP Racing rotor is too thin to be used with 30mm Z brakes as well.

[SmithSR]

Doesn't Phase2 sell the Project MU rotors? Methinks yes.

[cdlong]

Project Mu, Biot, and other JDM brake companies produce two-piece OEM diameter brake rotors. They are very expensive though.

That AP Racing rotor is too thin to be used with 30mm Z brakes as well.

but not the 26mm calipers.

i'll check on those japanese companies, but i don't care that much about weight.

[chmercer]

"but i dont care much about weight"

uhh what? lol

thought that was the entire idea.

[574-240sx]

If you are worried about the weight, leave it alone and buy a geo metro. Aluminum calipers are much lighter than the stock calipers. Who really cares about the added weight for the rotors. You are upgrading the brakes and care about weight.

[get_up_mark]

i held my stock blanks and my z32 11inch slotted and drilled and there was a difference in wieght but not enough to worry about imo.i also should mention i have the bigger 30mm width rotors. i have the aluminum calipers (you can tell by the fins on the calipers) and they wiegh almost exactly the same as stock calipers. if you go with the iron on the other hand i think they wieght twice as much,

[cdlong]

"but i dont care much about weight"

uhh what? lol

thought that was the entire idea.

i don't care enough to spend $1200 on rotors. that's what i meant.

you also left out a "that" in your quote, in retrospect i should have put it in caps to emphasize it.
Modified by cdlong at 10:57 AM 5/30/2005

[chmercer]

oh ok, misunderstood.