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kelsey hayes A-body 4-piston calipers are they all the same? #2496852 05/16/18 03:06 PM 05/16/18 03:06 PM
Joined: Jan 2003 Posts: 17,514 Las Vegas, NV 6bblgt OP I Live Here
6bblgt OP I Live Here Joined: Jan 2003 Posts: 17,514 Las Vegas, NV	Are the calipers all the same? what about the combination valve? what's the correct master cylinder casting number for a '71 with manual disc brakes?

Re: kelsey hayes A-body 4-piston calipers are they all the same? [Re: 6bblgt] #2496862 05/16/18 04:14 PM 05/16/18 04:14 PM
Joined: Jan 2003 Posts: 5,357 Rancho Cordova, California (Sa... hemi71x master
hemi71x master Joined: Jan 2003 Posts: 5,357 Rancho Cordova, California (Sa...	Calipers are all the same. 1965-72. RF-4C Phantom 69-370 Zweibrucken, Germany

Re: kelsey hayes A-body 4-piston calipers are they all the same? [Re: 6bblgt] #2496888 05/16/18 05:18 PM 05/16/18 05:18 PM
Joined: Jan 2003 Posts: 3,114 Sacramento,California JRepucci master
JRepucci master Joined: Jan 2003 Posts: 3,114 Sacramento,California	Originally Posted By 6bblgt Are the calipers all the same? what about the combination valve? what's the correct master cylinder casting number for a '71 with manual disc brakes? Casting number 2225641

Re: kelsey hayes A-body 4-piston calipers are they all the same? [Re: hemi71x] #2497008 05/16/18 11:40 PM 05/16/18 11:40 PM
Joined: Feb 2010 Posts: 1,645 Phila. Pa. Mattax top fuel
Mattax top fuel Joined: Feb 2010 Posts: 1,645 Phila. Pa.	Jim Lusk has stated there are couple of differences with the early ones. Quote: There are two differences, but only one is the caliper itself (the other is the retainer, one large retainer on early models and two smaller ones on later). The major difference is the dust seal and how it attaches. Early calipers have a steel ring that the seal goes around (the seal can be installed after the piston) while the later has another groove cut into the cylinder. This is where rebuild kits are critical. Some kits have four of each style while some only have the early seal. This is all because that seal is the same as the 65-67 Mustang.

Re: kelsey hayes A-body 4-piston calipers are they all the same? [Re: 6bblgt] #2497012 05/16/18 11:52 PM 05/16/18 11:52 PM
Joined: Feb 2010 Posts: 1,645 Phila. Pa. Mattax top fuel
Mattax top fuel Joined: Feb 2010 Posts: 1,645 Phila. Pa.	Here's direct to a picture of the combo valve: page 8, 1970 Master Technicians Conference Brake Hydraulics 1970 can get confusing with all the variations. The illustration also shows the metering valve, which was not used with the a-body K-H fixed caliper system. On the next page is a chart that indicates which disk brake systems got the metering valve. (The metering valve is to create a slight delay on the front brakes) 1972 illustration is clearer: http://www.imperialclub.org/Repair/Lit/Master/293/page13.htm Same combo valve for A-body disks as '71 and '70. Those booklets explains all of the valves and the 1970 booklet has a list of master cylinders on the back. P.S. Two good resources for factory info not in your service manual or parts book: http://www.imperialclub.org/Repair/Lit/Master/index.htm http://www.hamtramck-historical.com/ (go to the library) Last edited by Mattax; 05/17/18 12:00 AM.

Re: kelsey hayes A-body 4-piston calipers are they all the same? [Re: JRepucci] #2497024 05/17/18 12:15 AM 05/17/18 12:15 AM
Joined: Aug 2004 Posts: 3,392 cheshire, ct D davesmopars master
davesmopars master D Joined: Aug 2004 Posts: 3,392 cheshire, ct	Originally Posted By JRepucci Originally Posted By 6bblgt Are the calipers all the same? what about the combination valve? what's the correct master cylinder casting number for a '71 with manual disc brakes? Casting number 2225641 this is not the correct one for 71 Keeper of the 440 M code Cuda registry mcodecuda@yahoo.com

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