mark kibort

Ill take it. scot gave me approval to buy a set.

Brian, you should get a set too!

mark kibort

paypal sent!

The use of the centering rings will allow scot to use the cayanne 330mm rotors and the stock S brake calipers, which are not bad at all. heck, BMW used this caliper on the M3 up until just recently.

I had the adapaters made to allow the S calipers to be move out on the radius. even with all our calculations , they were still off a bit both radially and axiallly. nothing a washer, and a complete remachine couldnt fix. (thanks Sean! ) I should have his car running with the new brakes by next weekend. talk about cheap! now, scot will have even less expensive rotors at rotor change time, AND , 13" vs 11" rotors!

xschop

No problem, I'll always have them available. They work on the 350mm rotors and there is a 380 or 390mm rotor as well.
A hybrider just beat me to the punch and put Z06 6-pots on his 948 with the Cayenne 350mm rotors....Although he stuck them on the weak 86T spindle. I'm going to adapt them to the beefier 87 NA spindles.Those things have 6 pads each caliper....Nasty

Only 2 Wilwood adapter sets left....

mark kibort

now we have to find a way to get the 350s on my car! i have an offset problem with the rotor, obviously, so can a block of aluminum be made to push out .6" farther and move in or out the caliper to fit the differnt offset of the S4 spindle mounts??

xschop

Someone just asked me that question recently. The best route would be custom hats with a 14" rotor. You would also have to clearance the inner sweep of the caliper bridge or sacrifice pad/rotor contact area.

Can the S4 spindle be swapped for the 928S spindle? That would be another route. I'll say it again, the 928S spindle is the strongest of them all, it's a brute and begs for the Z06 brake swap lol.

http://944hybrids.forumotion.com/t15...n-my-944#16670

ubercooper

Found my winter project... 15" rotors for the beast? I think so

Are these the same size ring you are selling? If so I will take them

xschop

Yes those are the ones. Are you going to mock them up for a 928-S?

ubercooper

sort of, I have an OB with S4 spindles+brakes but with almost 600tq I need something larger than 12" rotors to have adequate stopping power.

But I just realized.... I now have the same problem as Mark with the different offset S4 spindles, so those rings may not help my situation :/

xschop

Well the C6 calipers are 128mm axial mount, so you'll have to revert back to the S spindles to mount those. Schue is sending me a tech drawing of the 944-C6 adapters

axis of evil

Arrived yesterday , So far only fitted the centering rings and rotors, That is one magic piece of machining, good tight fit into rotors, same onto hub, brackets look good too.
10 out of 10

mark kibort

YEAH Rob, thanks again for the RINGS!! yes, that is the key to the project. we are tackling Scots brakes tomorrow. hopefully, by days end we will have 13" rotors on the 928S brake system.
with all the calculations, the final product (the bracket) is still off about the thickness of a thin washer, which we will have to use to keep the axial position correct. Being off by 1-2mm for the housing mount is too much as the bracket will rub on the rotor. easy fix but still puzzed where the error came from.
scots going to be happy!!

IcemanG17

Is Scott going to race this year????? Its been forever since his car has been on track....

I'm still happy with the S brakes.....290mm....with HUGE pads....bigger than S4 actually...

xschop

No problem on the rings, Glad you guys got your 13" S-brakes up and running. The problem with the S-adapter is it's close interference fit with the spindle material. The end-user may have to trim his brakets some. The pads are nice, but canted from factory. Maybe there is a pad with constant contact.
What I like about the Wilwoods is the actual pad contact area always remains constant as the pad wears....

http://pitstopusa.com/i-5068712-perf...-compound.html

mark kibort

your happy, because you havent tried to use rotors that are 2" diameter larger.
huge pads, by any comparison, the S pads are smaller than the S4, but not by much.
yes, scot is gettig the car to the track and racing this year. you better get your license at the end of Feb!! once you have an SCCA license you can run with POC, PcA, nasa, etc.

thanks Rob. Hey, you were the MAN on this one. the rings were EVERYTHING!
the S adapter was no problem. ifi it was designed right, all i needed was a few strokes on a flat file to make it work . the design of the adapter was key.
the race pads dont have any "canting", so you get full contact patch from the start. (we use pagid and Hawk HT10s)

mark kibort

UPDATE

Just got back from scots to finish the job. THANKS TO ROB for the rings! (again! )
the other side was a snap. starting from scratch, the new adapters that Sean made out of steel, bolted up with no issues, only the caliper frame work needed a tiny bit of grinding for the radius area and the bracket area. i think all the grinding took less than 5 mins. very easy and very quck. i mounted both brackets, did grinding and did all the checking to make sure everything was right, in about 2 hours. no washer was needed. it was an artifact from the mock up. ended up having perfect clearance on both sides of the rotor (the s bracket that holds the floating caliper)

Now scot has 330mm rotors with S calipers!! all you need is the two adapters, the rings and a cut off wheel and suddenly, you have big brakes!