 Brakes, Stopping with M, A, or S |
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| johnmhudson111 |
 Jul 28 2005, 08:11 AM
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#21
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Member  Group: Members Posts: 491 Joined: 29-November 04 From: Nesbit, MS Member No.: 3,191  |
Coupe of questions about brakes. First of all what is the difference between "M", "A", and "S" capliers? Is it the mounting bolt distance? Early vs.Late? (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif)
Did the 914/6 come with "M" capliers? If not what did they come with? Can these brakes be upgraded to something like the "big reds? |
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| ClayPerrine |
Jul 28 2005, 08:27 AM
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#22
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Life's been good to me so far..... Group: Admin Posts: 15,502 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille 
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M caliper. Cast iron 2 piston caliper. Uses 3" bolt spacing. Used on 73 and older 911, 914 and 914/6. Used with a spacer for the vented rotors. Same piston bore, pad size, and bolt pattern as the 914/6 rear caliper.
S Caliper. Aluminum 2 piston caliper. Uses 3.5" bolt spacing. Used on 74 and later 911 S and all 911s with sportomatic. Bigger pads than the M caliper. Had problems with corrosion in the piston bores. Rebuilt ones use a stainless steel sleeve to alleviate this. A Caliper. Same as the S caliper, but made from cast iron. Bigger pad sizes than the M caliper. As for upgrading to "Big Reds", you would have to put 74 and later 911 struts on the front to get the correct bolt spacing to fit the caliper, and you have to have 17" wheels for caliper clearance. My suggestion.. Boxster (Not Boxster S) Monoblocks. There are bolt on adapters for them, and you can fit them under 16" wheels. But you still have to have the 74 and later 911 struts with the 3.5" bolt spacing. My question to you.. how much brake do you REALLY need? Can you lock the wheels up now? Do you plan on running on a track where you would heat the brakes up enough to warrant the big increase in unsprung weight? |
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Posts in this topic
johnmhudson111 Brakes Jul 28 2005, 08:11 AM
johnmhudson111 Jul 28 2005, 12:20 PM Eric_Shea Ahhhhhhhhhhhh Hello, Clay...
S-Calipers arrived a... Jul 28 2005, 08:40 PM johnmhudson111 Jul 31 2005, 09:34 AM Series9 Here's too much brake on a 914. They work GRE... Jul 31 2005, 11:49 AM Oled Mike,
Good to hear from you. I started off with ... Jul 31 2005, 03:42 PM Oled Total piston area on various calipers
M, S, A Fr... Jul 31 2005, 04:02 PM Eric_Shea Joe,
That's a "HUGE" brake line. Do you use ... Jul 31 2005, 04:39 PM Eric_Shea And I know what you guys are thinking, after looki... Jul 31 2005, 04:52 PM Dan (Almaden Valley) 
