Well as some of you know I am doing a Porsche 944 Turbo 4-piston caliper conversion on my car.

I am in the process of trying to find some decently priced 12.2" or bigger rotors that are 1.25" wide. Any info on this would help as well..

I have the porsche turbo brake pads and wanted to know what else I might need if anything?? SS Brake lines, Motul Brake Fluid, is any of this necessary?? Anything else?

thanks in advance,
jason

 

20 people have viewed.. no one has any idea huh??

 

you'll have to know the offset of the calipers, then poke around and see if any 1-piece OEM brakes will fit it. i.e. mistu 3000gt VR-4 rotors..
skyline rotors are "only" 11.8 x 1.25. too small.
(and way overpriced)

After that, it's going to be a 2-piece custom job. contact coleman racing, roadraceengineering, wilwood, etc for their stuff...
Fastbrakes has a rotor hat that will work depending on the offset of the caliper. that's your biggest problem.
there's just not much room around hte MAx suspension to fit deep-offset rotors to clear big calipers behind stock wheels.
that's why Loren had to trim part of his control arm for the skyline rotors he's using.
my 3rd gen didn't require that, but it's a very close fit.

and without trying to sound rude, if you have to ask the "basic" stuff about lines and correct fluid and where to get it, you might want to consider leaving your brake mods up to someone a little more knowledgeable in the area. ALL of that stuff is required, including custom brake lines. you can make them yourself out of parts at a local race supply shop, but it's not something I would want "just any baffoon" toying with in their driveway, if you know what I mean.
I've got good insurance, but my neck doesn't like whiplash. And I've got too much $ in toys in my trunk to be rear-ended.

 

Your braking will be faster then your acceleration?

j/k J

 

You'll probably need some kind of caliper adapter. Make sure its strong too..

Broken adapter + highway speeds = caliper taking out wheel spokes = *****!

LOL

 

I wouldn't bother with 12.2 rotors. The key to braking performance are disspating heat and leverage. The bigger the better.

 

trust me here fellas.. i am not touching my brakes. NOT EVEN CLOSE!!!

I am having a professional speed shop do it, but they called wilwood and wilwood said that they don't offer a rotor for the maxima.. no idea what that means... since ive seen wilwood kits on max's.

I asked about the brake fluid and lines to know if i should ask the guy to get them if i might need them.. i am not going into this project blind, trust me on that. I don't know the offset of the porsche calipers, but i am sure I can find out.. my concern now is just finding a reasonably priced rotor that will fit these.. the guy who is doing my install can custom machine a bracket and all.. so i just need the damn big rotors. i know i need 1.25" width rotor 12.2 or bigger.

someone help.

and yes my car will stop faster then it will accelerate luke, thank you.

 

Jason...save yourself some headaches and jump on this deal.

http://forums.maxima.org/showthread.php?threadid=112430

For ~$800, it's a great deal.

 

these people offered a 13" rotor with their big brake kit. here was/is the group deal for the big brake kit.
However they are very slow with shipping and I've been waiting 3 weeks for the kit

 

 

I talked to chunger today and he said I could use Fastbrakes rotors with hubs or caps.. what's the "hubs / caps" thing.. any info on that for me, as i said i am trying to gather any and all info before starting this.

jason

 

As in their complete kit... the calipers, brackets, hats and rotors are designed to work together... The hat is the aluminum part with the wheel stud holes that attaches the rotor disc to the hub.

 

I talked to Daryl at Precision Brakes this morning and he said he can make brake pad spacers to fit on a 13" rotor that is .8" in width (spacers would sit behind the brake pads to close up the .45" of gap that would occur with the porsche caliper 1.25" natural width).

He also said he could make the brackets for the calipers to specifically fit on a maxima, and I wouldn't have to have a lot of custom machining done.

He quoted me $655 for the rotors, hats, brake pad spacers, the brackets, and all of the bolts-lines that come with a regular kit. Does this sound like a reasonable price for everything?

jason

 

Is the Porsche caliper worth all these trouble? I have installed the Wilwood billet calipers. They are light, but just a little small compare to my AP/Stillen.

 

Kinda what I'm thinking. I know Porsche makes great brakes in general but off of a 944turbo? They are not that heavy of a car. Maybe the turbos used the same calipers off of a 911?

 

there is no difference from what i am told in the calipers from a 944 turbo and a 911 turbo, they are both approx 13" calipers that are 4 piston and have the same brake pads. As far as i know the curb weight of most 944's and 911's is well into the 3-4000lbs range.. not too far off from my family sedan.

i am going through all the trouble so that i dont have the same brake kit as other people, so that i can have something different, and just to prove some people wrong. i am a huge fan of doing things that no one else has done. I know for a fact there are a ton of people who will say that is gay because my car is an import and that porsche shouldnt even be mentioned around my car, but it's something no one has done - it should provide improved braking - and i think it will look really nice behind my wheels.

when it comes down to it i guess it is a silly idea and i shouldnt waste my time, but right now it's actually cheaper than any big brake kit out there and it should provide equal or better braking.

 

there are tons of Kits from AEM and other companies that use the Porsche calipers and pads on Acuras and Hondas..

As for whether they'll be big enough to do the job- definitely.
Again, the biggest problem will be your wheel clearance. I didn't want to lose my 16" wheels, so I had to stick with smaller rotors than I'd have liked (I'm using skyline rotors at 11.8 x 1.25" ) and wilwood Dynalite calipers. these fit so close to the wheel that it looks like they were designed for each other. There are actually scratches on the top of the caliper where small grains of sand have gotten caught between the wheel and caliper

but different wheels will have a lot more clearance than these- expecially if you get into 17 and 18" wheels. It will be required for anything over 12" rotors.

The price that you were quoted from Perf Brake is definitely a good one for everything that you get and having it all custom made.
Find some rotors that will fit, and you'll have very happy brakes.

 

wheel size is not an issue.. i have 18x7.5 right now, and i can get spacers if i need to.. 13" rotors with a 4" at max caliper should warrant plenty of room to move.

 

Remember that 4 piston calipers are usually alot wider than normal 1 piston stock maxima units. So the size of the wheel ie..17"/18" etc.. is not the only factor. You have to be wary of the offsets and spoke design to make sure the outer side of the caliper doesn't contact the rim spokes. I would take off one of the front tires and caliper. Then with the stock rotor still on the hub slide the caliper on the rotor. This might give you an approximate idea of how far the caliper will stick out. Support the caliper then mount the wheel back on to see if the inside of the wheel clears the outside of the caliper(width wise not diameter-wise)

 

wheel spacers..

 

wheel spacers are fine, until you have to stick 2" spacers on them to fit. It's just a warning, that's all.

 

i understand that is a good idea..

 

If you get spacers, make sure they are hubcentric, ie, they fit on the bolts snuggly or you will have a pain in the *** wheel wobble.

 

that's a great point, thanks a lot.. my ride quality cant get much worse but i sure the wrong size spacers would do wonders..