Your donations help keep this valuable resource free and growing. Thank you.
|
Disc Brake Problem |
Post Reply | Page <12 |
Author | |
farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19689 |
Post Options
Thanks(0)
|
AMC DISC BRAKES:
65-70 - Bendix four piston, solid rotors 71-74 - Kelsey Hayes 2.75" single piston 75-78 Matador - Bendix 3.1" single piston, big bearing rotors 75-76 - small cars - Bendix 3.1" single piston, big bearing rotors 77-78 small cars - Bendix 2.6" single piston, big bearing rotors 79-81 - Bendix 2.6" single piston 82+ - Delco 2.6" single piston All used the same wheel bearings as drum brakes unless otherwise noted. |
|
Frank Swygert
|
|
ramblinrev
Moderator Group Joined: Dec/28/2008 Location: Wisconsin Status: Offline Points: 11543 |
Post Options
Thanks(0)
|
A tweak to Frank's list: Bendix big bearing brakes were introduced during the '74 model year as a running change, somewhere around mid-year (and the '74 model run went into November of '74). So quite a few '74's came with Bendix disc brakes. Edited by ramblinrev - Jun/13/2012 at 5:50pm |
|
74 Hornet Hatchback X twins (since 1977)
62 American Convertible (still worth the $50 I spent in 1973!) AMCRC #513, AMO #384 70 AMX 360 4-speed (since 1981) |
|
farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19689 |
Post Options
Thanks(0)
|
The Delcos were also used on the Spirits and Concords in 82 and 83. The sliding Bendix type may have had some overlap into 82, but the 82 TSM just shows the Delco pin type calipers.
|
|
Frank Swygert
|
|
ramblinrev
Moderator Group Joined: Dec/28/2008 Location: Wisconsin Status: Offline Points: 11543 |
Post Options
Thanks(0)
|
Do the Delco and the Bendix use the same rotor on Concord and Spirit?
|
|
74 Hornet Hatchback X twins (since 1977)
62 American Convertible (still worth the $50 I spent in 1973!) AMCRC #513, AMO #384 70 AMX 360 4-speed (since 1981) |
|
farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19689 |
Post Options
Thanks(0)
|
YES. The rotor is the same. The difference between the Bendix and Delco are the way the caliper mounts -- Bendix slide on the frame (caliper mount), Delco has screw in pins that support the caliper. The Delcos are considered "low drag" and are much less likely to stick than the Bendix. The 3.1" piston Bendix rotors (big bearing also) have a thicker rotor, all other ventilated rotors are about the same thickness.
The 79+ rotor (and 77-78 small Bendix) is 0.88" thick, 75-78 big Bendix 1.19", and 71-74 K-H rotors are 1.00" thick. I would think the offset is about the same. The 79+ rotors may work with the K-H calipers -- there should be 1/4" of travel in the piston. Wear is 0.07" (from factory to minimum thickness), just a little over 1/16", for all. So max travel with the thinner rotor and K-H calipers would be 0.19", just under 1/4" (0.25"). I wonder if anyone has tried this, since the K-H rotors are over $100 and hard to find? Edited by farna - Jun/13/2012 at 6:00am |
|
Frank Swygert
|
|
ramblinrev
Moderator Group Joined: Dec/28/2008 Location: Wisconsin Status: Offline Points: 11543 |
Post Options
Thanks(0)
|
Thanks for clarifying! I knew the '79+ rotor was used on '82-83 Concords and Spirits, so I always believed those were Bendix brakes. I'll correct my earlier post, and yield to your expertise, Frank!
|
|
74 Hornet Hatchback X twins (since 1977)
62 American Convertible (still worth the $50 I spent in 1973!) AMCRC #513, AMO #384 70 AMX 360 4-speed (since 1981) |
|
Post Reply | Page <12 |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |