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Registered
Join Date: May 2003
Location: Sydney
Posts: 14
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What type of calipers have I got?
Hi,
I’ve got a ’76 Carerra 3 and I’m just about to order new brake pads, but I’m a bit confused as to which type of front caliper I’ve got. From what I’ve read Porsche changed from front S calipers to A calipers about the time my car was built. I've attached a pic. Regards, Andrew. 
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06-12-2003, 10:56 PM
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Information Junky
Join Date: Mar 2001
Location: an island, upper left coast, USA
Posts: 73,189
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Looks like a caliper. . . I mean "A-Caliper"
 The "S" has no thru-bolts.
__________________
Everyone you meet knows something you don't. - - - and a whole bunch of crap that is wrong. Disclaimer: the above was 2¢ worth. More information is available as my professional opinion, which is provided for an exorbitant fee. 
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06-12-2003, 11:17 PM
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Registered
Join Date: May 2003
Location: Sydney
Posts: 14
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Thanks, I'll order the parts. Here goes project 1 of 101 :-)
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06-13-2003, 03:02 AM
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911 + 129 = JOB
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Those look like what I have on my 89 Carrera.
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1989 911 Carrera Coupe 3.2 2012 BMW 135i M Sport "It is not how much power you have, it is how much you have left to spare!" |
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06-13-2003, 06:05 AM
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Somewhere in the Midwest
Join Date: Oct 2001
Location: In the barn!
Posts: 12,499
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The A's and M's look alike. Measure the mounting bolt spacing to be sure. Or take the pad out and measure the pad.
Run a search on M calipers or A calipers. |
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06-13-2003, 06:10 AM
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Acquired Taste
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the performance parts catalog (sorry wyane) has a diagram that you can align your pads with and it will help you determine the correct pad.
just let the record refelect i have, nor will i ever buy from that other company. thier prices make me quiver, not a good chick like quiver but bad theres a cop behind me with his lights on quiver.....
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78SC PRC Spec911 (sold 12/15) https://www.youtube.com/watch?v=f7I6HCCKrVQ Now gone: 03 996TT/75 slicklid 3.oL carb'd hotrod 15 Rubicon JK/07.5 LMM Duramax 4x/86 Ski Nautique Correct Craft |
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06-13-2003, 06:52 AM
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Schleprock
Join Date: Sep 2000
Location: Frankfort IL USA
Posts: 16,639
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Also remember that there are different types of "A" and "M"calipers. There are wide versions of these calipers.
Bill Verburg has done us all a big favor by making this great brake identification page: Bill V's Brake Page Here's the pertinent info. from Bill's page regarding the "A" and "M" calipers: 
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Kevin L '86 Carrera "Larry" |
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06-13-2003, 07:29 AM
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Registered
Join Date: May 2003
Location: Sydney
Posts: 14
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Gee, this is a little more complicated than I thought. Wayne’s book makes it sound so straight forward ;-)
Bills brake page is great. Looks like the front are A calipers… think I’ve got Ms on the back… guess I should check… time to try out my new trolley jack :-) |
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06-13-2003, 07:56 PM
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Montana 911
Join Date: May 2002
Location: Montana
Posts: 5,818
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the only trick I know is on my car a magnet will hold to the rear "M" caliper and will not hold to the front "S" caliper. So what metal is the "A" caliper made of?
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H.D. Smith 2009 997.2 S 3.8 PDK 2019 Ford Ranger Lariat FX4 Baby Raptor 2019 Can Am Renegade 1000R XC 2020 Yamaha YFZ450R |
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06-14-2003, 12:30 AM
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Registered
Join Date: May 2003
Location: Sydney
Posts: 14
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From what I've read the S caliper is aluminium and the A caliper is cast iron.
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06-14-2003, 04:43 AM
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1989 Porsche 911 3.2
the 23 car
domino
