: 8.8 disc brake ?'s


Kilby
05-07-2002, 10:19 AM
What kinda garbage do you need to do to get the rear disc brakes working on an 8.8 swap in a TJ?

YeahYEAH.... 60's this and 60's that... TJ's suck, get a REAL Jeep... Do a search... blah blah blah.

I DID search & there's just too DANG much info. I get sidetracked. And i'm not cool enough for a 60 yet.

So, what about an 8.8:question:

cord318
05-07-2002, 11:40 AM
"Ford 8.8 (Rear Axle) Install Kit:

Are you having trouble with the stock Dana 35 rear axle in your Jeep® XJ Cherokee, or YJ Wrangler? If you have installed tires larger then stock, chances are that you are. We have found the answer, and it is a very simple swap. The Ford 8.8 rear axle assembly from a Explorer is super heavy duty, and is very simple to install.

It's features are as follows: Same lug nut bolt pattern. Disc brakes (95 & newer). 31 spline axle shafts. 8.8" diameter ring gear (D35 is 7.5"). 120% stronger then D35. Only 20 pounds more then D35. Trac-loc differential stock (woppie-do, I know, who cares!). 3-1/4" diameter tubes (strong!).

You are required to find the complete rear axle assembly from a 95 or newer Ford Explorer, from a salvage yard. Then, remove (torch) the Ford mounts (spring, & anti-sway bar). You may also need to change the gear ratio as most Explorers have 3:73. The installation kit that we sell gives you the following: New, weld-on anti-wrap spring mounts, weld on shock mounts, U-bolts and U-bolt plates.

The width is almost the same. It is 5/8" per side narrower then the D35. This is a very minor draw back, and will work if you have wheels with less back-space then stock. If you have stock wheel back-spacing, then we have hub-centric wheel spacers available. We also have the correct cables for the emergency brake available as a kit, that are a direct bolt on, and super high quality. No cutting or custom fitting.

Note: The Ford 8.8 is not compatible with anti-lock brake equipped Jeep® vehicles!"

http://www.mountainoffroad.com/catalog/Mounting%20Hardware-Axle/Mounting%20Hardware.htm

http://www.mountainoffroad.com/new%20products/F8.8-XJ/98600-01.jpghttp://www.mountainoffroad.com/catalog/Mounting%20Hardware-Axle/98700-2.jpg

This should help. Or at least give ya somethign else to read.
Cord
Email the M.O.R.E. Guys. They'll help ya out

Jekyll
05-07-2002, 01:49 PM
Do you have all the disc brake parts? If so, you need to connect the rubber hose going into the caliper to your existing hard line(which should be shortened). Then attach the e-brake cables, either customize yours to adapt or buy some already made with the hook style end.

You should remove the O ring in the proportioning valve to make the fluid flow the same to all discs. There's a write-up regarding this on the BigOffroad site.

Yes, you're right, there is a lot of info available, so i'm not going to type it all out for you. I just mentioned a few of the basics.

Search and stay focused

sbessel
05-07-2002, 04:08 PM
I just had mine done and used this link as a guide:
http://www.dpgoffroad.com/tech/8.8.htm

Used the ZJ emergency brake cables, and ordered another right hand Exploder brake line to use on the drivers side.

You could also ask GearMan as he is the person that did all of the work. He did an incredible job I might add...

BillyBob535
05-07-2002, 06:26 PM
Another trick is if you want to use your existing Jeep rear soft line, you can just buy another passenger side 8.8 hose and hook it to the jeep line with a short piece of 3/16" brake line. The 8.8 uses the same size line as the Jeep block.

For those doing the swap in a YJ and using the stock 8.8 perches, you can just hook the Jeep feed line directly to the new Ford hose with an adapter. The adapter you need is made by Weatherhead and the part# is 62X3. It is a double male flare union that is threaded 3/8x24 which is the same as the Jeep and 8.8 brake lines. Take the new passenger side brake line and cut the bracket off then screw the adapter into the new line and screw the whole assembly into the block on the Jeep line. You can buy a bolt that is a little longer than the stock 8.8 retainer bolt and bolt the block to the spring perch.

Mine looks like this...

http://billybob535.0catch.com/Liftpics/AAL/Brakeline1.JPG

You also need a yoke adapter. If you have a 1310 joint you need a spice 2-2-1379 and if you have a 1330, you need a 2-2-1369.

Good Luck.

Po' riggity
05-07-2002, 09:05 PM
I've found that my brakes arent as adequate as they should be in my yj with an disc 8.8 in the rear, and I have been told that pulling the proportioning valve out, and re bleeding the brakes cures this. Im going to do that whenever I can get some help bleeding the brakes.
Scott

CannonBall
05-08-2002, 07:04 AM
The stock brakes work, and I have a ZJ so the stock e-brake worked.

In any case, just spend the time and the money to do it right and make it look good, I rigged mine and ended up chafing through the rubber lines big dumbass move by me.
-Nate

Kilby
05-08-2002, 12:58 PM
Originally posted by sbessel
I just had mine done and used this link as a guide:
http://www.dpgoffroad.com/tech/8.8.htm


THANKS! for the dpgoffroad link... I had that one in my fav's, but lost it when my PC was stolen. That was one of, like, 15 sites I can't remember.:rolleyes:

AU Jeep
05-08-2002, 04:56 PM
Billybob- are the yoke adapter part numbers that you mentioned for a yj? Also, where can you find one? How does it install? Sorry for so many questions but I am really wanting to put an 8.8 under my yj and just trying to gather as much info as possible.

BillyBob535
05-09-2002, 04:33 AM
The 2-2-1379 if for the YJ from 87-94 with the 1310 u-joint. The 2-2-1369 is for th 95 YJ and all D35 TJ's with the 1330 u-joint.

You can get it at any spicer dealer for about $20. You also need the 4 bolts that hold it to the flange and the 2 u-joint clips. The bolts are from Ford and the Clips can come from any u-joint place.

The easiest brake setup for a YJ is to buy an additional passenger side 8.8 brake hose, cut the bracket off, and attach it to the Jeep brake line block with a Weatherhead fitting #62X3. You can then bolt it to the spring perch with a bolt that is just a bit longer than the stock ford one.

Don't forget to expect the cost of an SYE. The 8.8 is slightly offset and will vibrate like mad with the stock shaft.

stoneyxj
05-09-2002, 01:34 PM
who needs an e- brake just leave it alone thats what i did. but i also don't have any money