996 monoblocks on SC

[palle7688]

I'm new here as active member but have read and leaned from you guys for a while.
I would like to hear from anyone who have done this and how.
Which rotors to use?
The 996 uses, as far as I know, 318*28 front and 299*24 rear. Will it be possible to use 964 disc's (298*28) front and (299*24) rear or 3.3L turbo (304*32) front and (309*28) rear?

I realize that the fronts are not bolt on, since the 964 disc is much deeper. But would it be possible to install them on the outside of the hub (between the hub and wheel) with a little milling of the hub.
It would certainly make a big inprovement over the SC disc's

[Bill Verburg]

The details will be very similar to VCI's solution for mounting 964 calipers on a 911.

[MuffinMan]

I consided this when I did my brake upgrade, but the cost was somewhat close to 993TT's after all was said and done. I went with a proven kit and brakes that I knew would never leave me wanting for bigger.

[palle7688]

Bill, I just knew you would come in :-))
Yes I've seen the VCI site, looks very nice.
But by using 964/930 rotors you would not get air passing through the hub.
I guess using a complete set 996 calipers it will by biased correctly but would it require a 33 bar valve for the rears?
And will it fit under my 16" Fuchs ( I have custom made ekstra deep 8"+9" fuchs, made the same man that makes for DP motorsport)
Do I need to replace my stock mc or change to 23 mm?
I have to say that my car is a '76 Euro Carrera that started life as 200 hp 3.0L without brakebooster., it now has 3.2L with SSI's and turbo flares. Mikkel had a look at mine before installind his SSI's.

[Bill Verburg]

That's the problem w/ upgrades. You really need to get 930 or better rotors for them to make a noticible improvement. Though there are certainly plenty of lighter cars that only need marginal improvements.

The price of admission is generally closer to $3k(or more) unless you get a screaming deal.

[palle7688]

Bill, will the 930 rotors fit under stock 16 Fuchs and do I need to change mc?

[MuffinMan]

yes. yes.

[palle7688]

Okay, they will fit and I'll need 23 mm mc, what about 33 bar valve for the rear.
Guess drilled 930 rotors with added cooling and 996 monoblocks will make quite a difference over the stock system or what?

[Bill Verburg]

You cannot use 964 rotor front or rear on a 911

The 911 and 930 rotors are equally easy to get air to and thru the hubs.

The 996 calipers are hydraulically the same as 964 calipers, yes, you need the biger ATE m/c, No, you do not want any p/v if you have matching f/r 996 calipers. Yes, they will fit in 16" wheels

Your car is the same as mine '76 C3(slightly different power choices)


I have never played w/ 996 calipers so have no idea how hard it may be to fit them on 930 rotors. The principle is the same as for 993/993tt ie use appropriate adaptors as they are already radial mount and so won't need to be machined.

[palle7688]

Bill, I don't see 993/996 monoblocks quoted on your site!!
By the way how come the newer cars are using smaller rotors (boxster 298*24/292*20 is some where in between SC/Carrera) the 993 used 304*32. The cars are getting heavier and faster!!

[palle7688]

Bill, I to would like to have a 3,6L engine but this one was cheaper and within the danish law of +20% hp, I did keep my SC gearbox so it goes to redline in 5th even uphill.
The reason for using 996 calipers is that there are plenty for sale overhere and do not require machining.
The 930 rotors you are talking about, is that the onepiece 3.3L from'81-'89?

[Bill Verburg]

The late monoblocks were too new to come in to the aftermarket. It is puzzling too me that more effort hasn't been made to adapt them to 911s. They are very good calipers, need less machine work than older ones and are smaller and lighter.

The kiss of death for the older series 964/993 calipers will be when the tooling wears out, which is in the very near future.

The 993 fronts have always been easily adapted to the front of a 911 w/930 rotors. It's the rears that have presented the worst problems

[palle7688]

Yeah, I'm still anxious for fitment of the rear (will I need to saw of the mounting holes for the dustshield?)
The 996 calipers are selling on Ebay for app. $400/pair overhere and there are new every week. Guess germans are trading up to big reds and bigger rotors.

[89911]

Here is a pick of 930 calipers with turbo rotors on a 16" by 9" rear wheel. The only wheel that will not fit is the 6" by 16" front unless you use a spacer.

[smdubovsky]

I have a set of 996 calipers & rotors too that Im looking to adapt to my SC. I can weigh/take measurements if you like. (I got the whole shebang for $200+a few hours labor = CHEAP!)

Im looking to fit the 930 rotors but Im concerned about the pad height. From what I can tell, the 996 uses a 10mm taller pad than the 993 (but I can't prove this). SO, the pad may overhang a 930 rotor? Can anyone tell us the ID of the 930 rotors braking surface? Front and rear?

Tnx!
SMD

[Bill Verburg]

The total pad height on the 930 pads is 65.6mm, on the 996 it's 86mm. Some of that is mounting. As I stated I have never tried these and know of no functioning installations in an earlier car.

The pad height is a real concern. The 996 calipers are used w/318mm rotors, much larger than the 304mm 930 rotors.

You might have to go w/ some custom Alcon or AP or Brembo rotors to do this.

[palle7688]

Bremsanlage Vorderachse bestehend aus einteiligen Bremsscheibenurchm.304x32 mm original Porsche 3,3 Turbo ab 1981-Modell, sowie 4 Kolben Festsättel aus Aluminium von einem Porsche 928 S4!! Bremsanlage HInterachse bestehend aus einteiligen Bremsscheibenurchm. 330x28 mm und Brembo Monoblock 4 Kolben Festsätteln von Porsche 996 Biturbo Modell 2000

[palle7688]

search Ebay article: 2458522216
Has nice pics of complete set front/rear set with 996 monob and 930 rotors.
What puzzzles me is the rotors, seems like rear ones both for fr. and rear or other ideas?
I'm not used to see 930 rotors. The rear ones are specified as 309*28, 83 mm deep and SC/Carrera are 289/290*20/24, also 83 mm deep I'll guess they'll fit without problems like stated above.
The fronts are specified as 304*32 vs 282*20,5/24 for SC/Carrera but so far I've not been able to get specifications of depth. The 964 fr. disc are 298*28, 80 mm deep. these will not fit acc to Bill.
Like I started the topic with: is it possible to install the rotors between the hub and wheel?
Beepbeep are you with us ? Tell us what rotors you've used as seen in the topic I think was called "floating rotors"

[Bill Verburg]

Those are
Front; 993/S4 front calipers w/ 36/44 pistons & '81- 903 front rotors 304x32. Those calipers will work well w/ those rotors but the rotors will only work well w/ 930 front fenders.


Rear: 996tt rear calipers(28/30) and rotors(330x28)

Again I have no experience w/ those rear rotors but since 993tt 322x28 can be modified to fit on a 911 the 996tt versions are likely to be usable as well.

The advantage of using the monoblocks in the back is that they are radial mount oem and so don't need machining to be used on a 911, just adapters.

[palle7688]

What kind of rotors are the 944 turbo using front? something usefull?
The calipers are!!