Brakes . What fits what

haasad · Post by **haasad** » Fri Feb 22, 2008 10:24 am

My 75 911S has the alloy ATE front calipers and iron rears as a 911RS. They need refurb. BUT last night I was given a set of four porsche brembo four pot calipers suspected to have come fron a 930 turbo. .

So the mounting bolt pitch doesn't match but I can easily fix that. Question is will I encounter problems with disc thicknessor offset and wheel clearance on 15 inch wheels. ?

I'll post some pictures of them later if it helps but some (basic) measurement last night seems to indicate that the major dimensions aren't far off.

Any advice or opinion?

andy

Lightweight_911 · Post by **Lightweight_911** » Fri Feb 22, 2008 10:35 am

Andy - Bill Verburg's invaluable resource for 911 brake info:

http://www.pelicanparts.com/MotorCity/wmv/brakes.htm

Ian Gunney · Post by **Ian Gunney** » Fri Feb 22, 2008 12:50 pm

I had to change the front hubs too.

haasad · Post by **haasad** » Sat Feb 23, 2008 8:53 am

Heres a few pictures . I would really like to confirm what the calipers are off since that is key to identifying suitable rotors etc.

cheers

andy

hot66 · Post by **hot66** » Sat Feb 23, 2008 9:07 am

do they have any numbers on them?

They look awfully like the 944 turbo callipers I fitted to my VW beetle

Alan @ CanfordClassics · Sat Feb 23, 2008 9:11 am

They could be 964 C4 calipers I may have some rotors if so.

.

haasad · Post by **haasad** » Sat Feb 23, 2008 10:48 am

Alan, yes thats a possibility I might have to have alook at those rotors. But a 944 is also possible. Trouble was they came in a job lot of "handy stuff" a race car builder friend bought about eight years ago.

I'll look for numbers?

andy

Lightweight_911 · Post by **Lightweight_911** » Sat Feb 23, 2008 10:54 am

What diameter are the front/rear pistons ?

haasad · Post by **haasad** » Sun Feb 24, 2008 3:31 pm

Just had a vernier on them and a magnifying glass.

Rears

4 piston 30mm and 28mm diameter

Fronts

4 piston 40mm and 36 mm diameter

Rears are numbered
20.4672.00
20.4673.00

Fronts
20.4691.00
20.4692.00

what do you reckon. 964/944 or 928. I'm convinced they'll go under 6 by 15's.

andy

Ian Gunney · Post by **Ian Gunney** » Sun Feb 24, 2008 8:11 pm

the 930 discs and calipers just go inside 7 and 8 by 15 Fuchs - mind you there is no room for the wheel weight inside the rims

haasad · Post by **haasad** » Mon Feb 25, 2008 8:27 am

So Ian,

do these look like 930 calipers? I really want to use them but need to identify so I can select the correct rotor option.

andy

mrg3.6 · Post by **mrg3.6** » Mon Feb 25, 2008 11:45 am

haasad wrote: do these look like 930 calipers?

Andy,

These are definately NOT 930 calipers.

Martin
911SC 3.6

haasad · Post by **haasad** » Mon Feb 25, 2008 1:28 pm

993 maybe?

andy

hot66 · Post by **hot66** » Mon Feb 25, 2008 2:01 pm

this site might be of interest :

http://www.944s2.com/brakes/brakes.htm

Also for reference :

928's on ebay .... different part number to yours so I think you could assume you don;t have 928's:

http://cgi.ebay.co.uk/BRAKE-CALIPERS-PO ... dZViewItem

MdR · Post by **MdR** » Mon Feb 25, 2008 4:48 pm

hot66 wrote:They look awfully like the 944 turbo callipers I fitted to my VW beetle

I vote with James - they look like early 944 brembos.
The early ones had the raised cast lettering, the later ones are smooth with the lettering as a stencil/paint.

DDK - Die Deutschen Klassiker

Brakes . What fits what

Brakes . What fits what

Brakes

Calipers

Calipers

Brakes

Re: Brakes

Brakes