IanP

iTrader: (2)

I'm about to order a project mu bbk but I can't decide between the 2 & 4 piston rear kits. I've just been told though that the handbrake wont work with 4 piston rears? Any ideas if thats true because if it is i'll have to go for the 2 piston

Kwame

iTrader: (78)

I have no personal experience with the Project Mu 4 piston rear big brake kit, but were you given an explanation of why the handbrake would not work with that kit?

IanP

iTrader: (2)

Nothing from the supplier yet, they are still trying to find out for sure. One of the other guys whos buying aswell read somewhere that most bbks dont allow for use of the handbrake but after a bit more searching & asking people with the PMU kit it seems it will still work with 4piston rears

Z1 Performance

iTrader: (564)

I'd steer away from a kit that does not either integrate the parking brake, or have provisions for one of it's own - sorta shows they didn't necessarily design the kit with this car in mind

Also, PMU has several rear calipers that they offer, I think at least 2 are 4 piston

Shoot me a PM with the kit you guys are considering, and I'll see what I can find out for you

kno

iTrader: (22)

maybe they wont work because the brakes are so damn overkill for the rears that your axle will rip the **** off once you apply the e-brake

lgear080

iTrader: (21)

I have just dealt with this very problem.

IanP

iTrader: (2)

I'll email across the info to you once I get home

Overkill? Maybe but who cares

And the answer was????

StopTech

shameless plug that the oem ebrake works with our rear kits.

Cux350z

iTrader: (162)

^but no drifting on the aluminum hats.

dikspiel

iTrader: (70)

Ian go with some Endless.

Kwame

iTrader: (78)

I'd be surprised and disappointed if the Project Mu hats weren't also aluminum.

IanP

iTrader: (2)

I'm getting an amazing deal on the Mu's

lgear080

iTrader: (21)

Suffice it to say that if the rotor hats are improperly sized you're left
to hoping they've got a smaller hat (or the ebrakes gotta go!).

I will let you determine what I did to accomodate my rear 380 mm gt-r r35
brembo kit.

Never used that ebrake anyways...

Chris_B

As a reference point, the AP Racing rear kits work perfectly with the OE parking brake system. The street kits have iron hats for longevity, while the track-only kits have aluminum hats for weight savings.

Chris

Chebosto

iTrader: (43)

well.. you could.. you just be replacing the hats every so often..

BrazenZ

Please explain, why can't you drift with aluminum hats? Does the heat build up warp them, if so why wouldn't the heat warp the aluminum calipers as well?

Chris_B

The rear hat on the 350Z incorporates the parking brake drum. Many drifters use the parking brake to start rotating the car. The parking brake shoes need a surface to run against that can handle the friction and heat. Iron works very well where aluminum gets chewed up in a hurry. Some try to insert a steel or iron ring into an aluminum hat, but this gets very tricky as aluminum expands much more than steel with temperature. It can be shrunk or interference fit when at room temp, but will start to loosen up at higher temps. A secondary mechanical method must also be used, which then starts to eat up the weight savings of going to aluminum in the first place!

Another problem with aluminum hats can happen when someone sets the parking brake after coming off of a track, canyon run or anywhere else where brake temperatures are elevated. Putting a large hoop stress on a hot aluminum parts can cause it to go out of round. Rule of thumb: Never set the parking brake when the brakes are very hot on any car.

Bottom line: Aluminum hats are best for racing or drifting, or where the driver fully understands what he can and cannot do with them.

Chris

terrasmak

iTrader: (8)

Or do a hydraulic E brake, thats actually best for a dedicated drifter.

BrazenZ

Thanks for the explaination Chris B, That's makes perfect sense.