|
|
|
rear brake upgrade to 11" |
Post Reply 
|
| Author | |
Jerry M 
Member 
Joined: 05 Apr. 2008 Location: Northern California Status: Offline Points: 25 |
 Post Options
 Thanks(0)
 Quote Reply
 Topic: rear brake upgrade to 11"Posted: 22 July 2008 at 2:40pm |
|
I was under the impression that a rear brake upgrade to 11" brakes was a direct bolt up upgrade. The backing plates of the 11" brakes have four bolt holes (off 1976 cj5). The backing plates on my 1948 CJ2A have six bolts holding the backing plate to the rearend housing. Do I just drill six holes in the CJ5 backing plates ?
|
|
 |
|
|
lowenuf
Member
Sponsor Member x 2 Joined: 29 Aug. 2006 Location: Ohio Status: Offline Points: 9122 |
Post Options
Thanks(0)
Quote Reply
Posted: 22 July 2008 at 4:21pm |
|
look for the backing plates from a '60's J-10....then do all 4 corners :)
|
|
|
45 #10012
45 #10033 ACM #47 45 #10163 ACM #188 57 CJ5 Dauntless V6, T-18 4-speed, D-44 rear/D-30 front, D-20 twin stick |
|
|
|
|
bkreutz
Member
Sponsor Member Joined: 17 Oct. 2006 Location: Fruitland Idaho Status: Offline Points: 7037 |
Post Options
Thanks(0)
Quote Reply
Posted: 22 July 2008 at 4:34pm |
|
Ditto on all 4 corners. If you do just the rears it will make for some interesting driving. But you will be able to do nice hairpin slides.
|
|
|
|
|
F Bill
Member
Sponsor Member x 2 Joined: 05 Dec. 2005 Location: central Texas Status: Offline Points: 7752 |
Post Options
Thanks(0)
Quote Reply
Posted: 22 July 2008 at 4:44pm |
|
I would think redrilling the backing plates may be a simple solution if you can do it precisely. If that is the only fit issue give it a shot. Do a loose trial fit first with shoes adjusted all the way in, and trial fit the drum to make sure there aren't any clearance issues and the shoes locate correctly, then drill. Any machine shop should be able to handle it, and I bet even just marking the hole locations when the backing plate is fitted to the axle would work. Does the center hole on the backing plate match the 2A hole?
And ditto on the four wheel deal. Bet ya knew that already tho.  Edited by F Bill - 22 July 2008 at 4:48pm |
|
|
If you haven't checked out the tech FAQ section, go to:
http://www.thecj2apage.com/forums/tech-faq_forum57.html for a lot of great stuff you need to know!! |
|
|
|
|
wiffle9
Member
Joined: 11 Mar. 2008 Location: Carrollton, GA Status: Offline Points: 67 |
Post Options
Thanks(0)
Quote Reply
Posted: 22 July 2008 at 8:47pm |
|
when i did my 11" upgrade, i used backing plates from a 76 cj7. i just drilled the holes myself, and everything worked out well. heres a pic
|
|
|
47 CJ2A
74 CJ5 05 wrangler unlimited |
|
|
|
|
Jerry M
Member
Joined: 05 Apr. 2008 Location: Northern California Status: Offline Points: 25 |
Post Options
Thanks(0)
Quote Reply
Posted: 23 July 2008 at 1:56am |
|
Thanks everyone.
I like the clean look of your conversion wiffle9, Hope mine come out that clean.
I have slowly gathered parts to install disk on the fronts. I have gathered the mid 1970's chevy pu calipers & caliper plates, I will buy the mid 1970's Jeep cj5/cj7 front rotors and also the correct conversion master cyclinder.
You guys that did 11" drums on all four corners did you upgrade your master cyclinder ?
would you install disk up front if you had it to do again ?
|
|
|
|
|
jeeper50
Member
Sponsor Member Joined: 01 Mar. 2008 Location: Spanish Fort AL Status: Offline Points: 2579 |
Post Options
Thanks(0)
Quote Reply
Posted: 23 July 2008 at 1:06pm |
|
you have backing plates from a Corp 20 axle from a '76 that is why you don't have 6 holes. |
|
|
Belleview ol skool winch soon. '48 CJ2A 283 V8 sm 420 granny low, tera low D18, overdrive,lockers Texan at heart,Alabama by retirement |
|
|
|
|
Post Reply
|
|
| 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 |
Topic Options