Part check- 11" upgrade

Hello,
I just received backing plates from a wagon/pickup to get ready to upgrade to 11" brakes. If I follow this guide- am I good to go as far as acquiring the new stuff? Does the wagon/pickup change anything?
Thx!
Allan

--------------
Probably the simplest way to get the parts needed to complete the swap is to remove all front axle brake components (drum to backing plates) off of a 1972-1976 Jeep CJ. I say to use the front axle part because if your braking system is the factory setup, you will want to swap your front brakes out for the bigger ones since the front brakes do the majority of the work. Parts from other vehicles can be used as well. Just make sure that no one is using that vehicle (duh). If you have successfully used parts from another vehicle, please let me know so one day it may be added to this article. I got my parts from a 1974 CJ5 that I parted out. I decided to rebuild or replace all components except for the backing plates. All parts I purchased came from either NAPA or AutoZone. A breakdown of the parts needed (for the 1972-76 CJ) is as follows:
http://wayback.archive.org/web/2012...5.com/technical/brakes/early-cj-11-drum-swap/
Part:
Napa P/N:
AutoZone P/N:
11″ Backing Plates -
Donor Vehicle
Donor Vehicle
11″ Drums -
UBP 6401259
882
Wheel Cylinders :
Left -
TSW 4636017
33614
Right -
TSW 4636018
33615
Brake Shoes -
RBP AE10AR
228
Brake Hardware Kit -
UBP 80409
H7137
Flexible Hoses -
???
88245

 

Regarding the parts, you should be fine if you use whatever is listed for a 1972 or 1973 CJ-5. However, be aware that the aftermarket parts listings for brakes on these Jeeps includes many errors, so be sure the parts you use specifically refer to 11" brakes.

Everything I've read says that the Wagoneer backing plates will work fine. The '65-73 Wagoneer uses the same drum as the 72-73 CJ, so no problem there - they are simply Bendix 11" brakes and the backing plates bolt on to the axles. However, you should use the wheel cylinder sizes from a CJ, not a Wagoneer.

The '72-73 CJ does not have a proportioning valve, but the '74-75 does. So it's not clear that you absolutely need the proportioning valve in all cases. All these Jeeps, '72-75 WILL have smaller cylinders on the rear drums (ie 1.125" vs 0.9375"), with or without a proportioning valve. Anyway, the OEM proportioning valve is NLA, so if you want to put a proportioning valve in the rear line, you'll need to buy an adjustable one from Wilwood and experiment with rear wheel lock-up.

Also, you can't use the brakes from a 1976 model. The Wayback article is wrong. The rear backing plates from a '76 will not fit.

Show us a picture of what you got with your backing plates. If you just got naked backing plates, you may have trouble sourcing some of the hardware.

 

Thanks. I'll post up some pics but they are definitely neked.. lol. In the process of cleaning/painting them now. I was hoping the hardware kit in the list would take care of the misc. hardware.

 

Mmm. Look at figure 9-13 here. http://oljeep.com/gw/76_tsm/Section9.pdf I believe you will need, in addition to the hardware kits, the shoe guide plate, the links, the parking brake lever, the parking brake strut and spring. If you keep your transfer-case mounted parking brake, you won't need the parking brake parts. I'm sure you can source everything else. Look at the RockAuto page for a 1973 CJ-5 with a V8. You'll want the Wagner combination kit http://www.rockauto.com/catalog/moreinfo.php?pk=542357&cc=1309441&jnid=453&jpid=6 for each axle and a self-adjuster repair kit http://www.rockauto.com/catalog/moreinfo.php?pk=541740&cc=1309441&jnid=448&jpid=6 for each wheel, plus shoes and wheel cylinders.

 

Yep, 1 1/8" front and 15/16" rear. That's what I installed in my CJ-6. I will check the parts book later, but that's right unless my memory is faulty. That's what RockAuto shows too - same for all intermediates, regardless of whether a prop valve is present.

 

They are different just did mine and the boys and the rears are smaller bore