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  #1  
Old July 14th 2010, 21:23
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964 C2 brake setup???What MC should I use??

Hey to all,
I have installed 964 C2 calipers( smaller 2 pot caliper) on the rear of my bug, and plan to installed 944 S2 Turbo calipers up front( same as 964 front calipers I believe.
My question is now with this set up do I use the 944na or Turbo master cylinder or use a 911 / stock late model bug master?? I have read many of the threads here, and because the rears are 2 pots as apposed to turbo brakes with MC will work the best.
I appreciate the help.

Cheers
Dean

Last edited by vdubfund; July 14th 2010 at 22:35.
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  #2  
Old July 15th 2010, 05:44
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Hi Dean,
The problem that you will have is one of brake balance. The bug should have a brake bias of around 50/50 that your set up is unlikely to deliver that even with the most radical dual circuit m/c. Remember, the 964 was a heavy front engined car albeit with a purported 50/50 weight split however, the bug has a 40/60 weight distribution so as you can see the rear brakes have got to be bigger than the rear ones produced for the 964 if you use the fronts. You can dial out the bias with a balance bar arrangement but you will be into twin M/Cs

Clive
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  #3  
Old July 15th 2010, 21:02
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Wink

Cheers for the responce.
I think perhaps you have the 968(front engine) and the 964(911model) confused. The 89-91 came out with a 4pot brembo caliper up front 28mm x 299mm disc and 2 pot small calipers in the rear (24mm x 299mm)discs. Not sure on the master cylinder size for that model however??
You are possibly very correct in your statement about over biased braking, just think you have vehicles mixed.

Cheers
Dean
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Old July 16th 2010, 09:25
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Dean,

Your right, I do have them confused, I am so used to people looking at the 944 and derivatives for braking components I naturally jumped to conclusions. My apologies.
I don't have any details on the 911 m/cs but a quick check on the piston sizes will indicate a posible solution. Do you have those to hand?

Clive
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  #5  
Old July 16th 2010, 15:05
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I had the combo you describe on my old bus (964C2 brakes). I was using the 944 stepped master cylinder but was not completely happy with it. I had plans to put in a SC master (20.6mm F/R) but never got around to it before I sold the bus. In bugs, I use stock 19mm MC for 944T, and that what's I would advise for your system.

Cheers,
Lanner
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  #6  
Old July 19th 2010, 22:22
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Just bought 996 C2/4 discs for the upgrade (299 x24mm)75mm deep!
Attached Images
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File Type: jpg DSC09311.jpg (33.8 KB, 41 views)
File Type: jpg DSC09315.jpg (34.9 KB, 37 views)

Last edited by vdubfund; July 19th 2010 at 22:27.
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  #7  
Old August 12th 2010, 23:23
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Looks great Dean. Are those 16x7 Wheels?

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  #8  
Old August 18th 2010, 08:24
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Update Short SA / brembos

Yes Lanner they are indeed 16 x 7 fuchs. Tight fit, but important thing is they fit!

Ok heres the update
If you have a short axle bug and are wanting to go brembos
Here is what I used a what worked for me.

64 Bug (short axle)
924S(Turbo) rear steel baking plates
early (83ish)944 rear hubs(because they have longer studs than the 924's
964 C2 2pot rear brembos
996 rear discs (299 x 24 x75mm)
Lanners 3mm hardened spacers. BUT I NEEDED 4mm OFFSET NOT 3MM TO GET THE CALIPERS LINED UP. I used 304SS 1mm shims from the local hardware store for now.


When changing the brakes over found out one bearing was shot.LOL
Found some new ones on ebay. Thought I'd try some new to help prevent leaking seals. SNF/ SKF 6303S bearing (single sealed)
We"ll see if it works. Sealed on one side open on the other. SO it is still lubed by trans oil, but not open on the other...
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File Type: jpg DSC09553.jpg (51.9 KB, 34 views)
File Type: jpg DSC09546.jpg (35.3 KB, 24 views)
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  #9  
Old August 18th 2010, 08:27
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Lanner thanks again for the all the help.
I aint finished yet.
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