TJ rear disc brakes - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > TJ Wrangler Technical Forum > TJ rear disc brakes

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineNEW!! HMF 50"-52" light bar mounting brackets!! Year End Clearance Sale! Save 20%

Reply
Unread 12-18-2014, 06:00 PM   #1
durangoroadboss
Registered User
1999 TJ Wrangler 
 
Join Date: Dec 2014
Location: Durango, CO
Posts: 3
TJ rear disc brakes

Hi Folks - has anyone installed disc brakes on a rear TJ factory 44 and had interference issues with the calipers? I am wondering if my rear wheels (Hutchinson Rock Monster 15" bead locks) will clear the calipers. Any ideas on the minimum required inside wheel diameter? Or which kits might give me the most room? Thanks.
Richard

durangoroadboss is offline   Reply With Quote Quick reply to this message
Unread 12-18-2014, 06:22 PM   #2
88hatchy
Registered User
1997 TJ Wrangler 
 
Join Date: Jan 2012
Location: Florida, Colorado
Posts: 913
Ther is no reason to switch to rear disk brakes.
__________________
1997 TJ - Current project: Simple build --> LCG, 35s
1988 Civic Hatch - Runs 12's, gets 30 mpg
88hatchy is offline   Reply With Quote Quick reply to this message
Unread 12-18-2014, 06:29 PM   #3
willis36
Senior Member
 
willis36's Avatar
1997 TJ Wrangler 
 
Join Date: Nov 2010
Location: broken arrow, oklahoma
Posts: 888
There are many reasons to switch to rear discs, how important those reasons are is up to you.
willis36 is offline   Reply With Quote Quick reply to this message
Unread 12-18-2014, 07:00 PM   #4
88hatchy
Registered User
1997 TJ Wrangler 
 
Join Date: Jan 2012
Location: Florida, Colorado
Posts: 913
I'll wait for Jerry to chime in.
__________________
1997 TJ - Current project: Simple build --> LCG, 35s
1988 Civic Hatch - Runs 12's, gets 30 mpg
88hatchy is offline   Reply With Quote Quick reply to this message
Unread 12-18-2014, 09:17 PM   #5
mrblaine
Wizard of Brakes
 
mrblaine's Avatar
1999 TJ Wrangler 
 
Join Date: Dec 2004
Location: Quail Valley, California
Posts: 26,623
Quote:
Originally Posted by 88hatchy View Post
I'll wait for Jerry to chime in.
No need. There are lots of valid reasons to swap to rear discs, better braking however, isn't one of them.

Maintenance is easier.
Parking brake typically works better because there isn't a primary and secondary shoe.
No adjustment ever needed.
Working on them is far easier even the parking brake aspect.
Parts are actually cheaper in some instances.
Pedal height is no longer based on how well the rear brakes are adjusted and remains constant throughout the life of the frictions.
__________________
I am Savvy
blackmagicbrakes.com
mrblaine is online now   Reply With Quote Quick reply to this message
Unread 12-18-2014, 09:31 PM   #6
willis36
Senior Member
 
willis36's Avatar
1997 TJ Wrangler 
 
Join Date: Nov 2010
Location: broken arrow, oklahoma
Posts: 888
Quote:
Originally Posted by mrblaine View Post
No need. There are lots of valid reasons to swap to rear discs, better braking however, isn't one of them.

Maintenance is easier.
Parking brake typically works better because there isn't a primary and secondary shoe.
No adjustment ever needed.
Working on them is far easier even the parking brake aspect.
Parts are actually cheaper in some instances.
Pedal height is no longer based on how well the rear brakes are adjusted and remains constant throughout the life of the frictions.
Those are all the reasons I was thinking, and why I will one day pony up for a disc conversion.
willis36 is offline   Reply With Quote Quick reply to this message
Unread 12-18-2014, 10:34 PM   #7
geroux
Registered User
2004 TJ Wrangler 
 
Join Date: Nov 2013
Location: San Antonio, TX
Posts: 876
They clean themselves better too.
Rear disk was one of the several reasons I bought a Rubi. I love not having to deal with drum brakes again (except my wife's SUV).
Just a thought, wonder if a Rubi's disk setup could be found at a junkyard and bolted on? Cheaper than a "new" upgrade kit?
I have 15" wheels on my stock rear disks.
geroux is offline   Reply With Quote Quick reply to this message
Unread 12-18-2014, 11:16 PM   #8
durangoroadboss
Registered User
1999 TJ Wrangler 
 
Join Date: Dec 2014
Location: Durango, CO
Posts: 3
Hi guys, thanks. My 1999 TJ has 35s and I use it mostly off road. I have noticed a real problem stopping when rock crawling down very steep inclines - I pretty much have to push the brake pedal as hard as I can to get the jeep to stop on steep rocks. The emergency brake never seems to hold the Jeep very well either (I've adjusted it a few times). I've owned the Jeep since new, and front and rear brakes are in good condition - the Jeep only has 16000 miles - almost all off road. Maybe I'll look into the stock rear discs. Any other suggestions? Thanks.
Richard
durangoroadboss is offline   Reply With Quote Quick reply to this message
Unread 12-18-2014, 11:30 PM   #9
J03_TJ
Web Wheeler
 
J03_TJ's Avatar
2003 TJ Wrangler 
 
Join Date: Jul 2009
Location: Sparks NV
Posts: 3,505
Quote:
Originally Posted by mrblaine
No need. There are lots of valid reasons to swap to rear discs, better braking however, isn't one of them. Maintenance is easier. Parking brake typically works better because there isn't a primary and secondary shoe. No adjustment ever needed. Working on them is far easier even the parking brake aspect. Parts are actually cheaper in some instances. Pedal height is no longer based on how well the rear brakes are adjusted and remains constant throughout the life of the frictions.
So you'd be the guy to ask, what advantage(s) would drums have over disks?
J03_TJ is offline   Reply With Quote Quick reply to this message
Unread 12-19-2014, 12:55 AM   #10
btn
Registered User
2000 TJ Wrangler 
 
Join Date: Jan 2010
Location: Crawlorado
Posts: 447
Quote:
Originally Posted by J03_TJ View Post
So you'd be the guy to ask, what advantage(s) would drums have over disks?
One thing is that drums are self-energizing, unlike disks. I'm not sure if it's as a rule, but they can be lighter, and they don't cause drag when the breaks aren't applied as disks can.
__________________
2000 TJ, 4.0L, 4" short arm suspension lift, 35" tires, Rear D44 and front HP30 both with ARBs and chromo shafts, NV3550.
btn is offline   Reply With Quote Quick reply to this message
Unread 12-19-2014, 01:05 AM   #11
ian_red-zj
Registered User
1998 ZJ 
 
Join Date: May 2013
Location: Whitmore, California
Posts: 282
Quote:
Originally Posted by durangoroadboss
Hi guys, thanks. My 1999 TJ has 35s and I use it mostly off road. I have noticed a real problem stopping when rock crawling down very steep inclines - I pretty much have to push the brake pedal as hard as I can to get the jeep to stop on steep rocks. The emergency brake never seems to hold the Jeep very well either (I've adjusted it a few times). I've owned the Jeep since new, and front and rear brakes are in good condition - the Jeep only has 16000 miles - almost all off road. Maybe I'll look into the stock rear discs. Any other suggestions? Thanks. Richard
Have you tried bleeding them? And going downhill most of the inertia is transferred to the front, so maybe you just need bigger brakes with those 35s
ian_red-zj is offline   Reply With Quote Quick reply to this message
Unread 12-19-2014, 02:24 AM   #12
Knuckelhead
AFSOC Retired
 
Knuckelhead's Avatar
2000 TJ Wrangler 
 
Join Date: Aug 2005
Location: Colorado
Posts: 15,717
Quote:
Originally Posted by 88hatchy View Post
Ther is no reason to switch to rear disk brakes.
Quote:
Originally Posted by mrblaine View Post
No need. There are lots of valid reasons to swap to rear discs, better braking however, isn't one of them.

Maintenance is easier.
Parking brake typically works better because there isn't a primary and secondary shoe.
No adjustment ever needed.
Working on them is far easier even the parking brake aspect.
Parts are actually cheaper in some instances.
Pedal height is no longer based on how well the rear brakes are adjusted and remains constant throughout the life of the frictions.
And no brake fade after a water crossing...
__________________
TSB Information: http://www.automd.com/tsb/jeep_m/wrangler_mm/2000_y/
Knuckelhead is offline   Reply With Quote Quick reply to this message
Unread 12-19-2014, 07:27 AM   #13
biffgnar
Web Wheeler
 
biffgnar's Avatar
2006 TJ Wrangler 
 
Join Date: May 2008
Location: Westchester, NY
Posts: 14,630
Quote:
Originally Posted by geroux View Post
They clean themselves better too.
Rear disk was one of the several reasons I bought a Rubi. I love not having to deal with drum brakes again (except my wife's SUV).
Just a thought, wonder if a Rubi's disk setup could be found at a junkyard and bolted on? Cheaper than a "new" upgrade kit?
I have 15" wheels on my stock rear disks.
You aren't going to find any Rubicon axles in a JY to pull the brakes from. Explorer discs though can be converted over.
__________________
Thank you Dave Cole, Dynomax, Falken and all the Spec Class sponsors!!
biffgnar is online now   Reply With Quote Quick reply to this message
Unread 12-19-2014, 07:29 AM   #14
biffgnar
Web Wheeler
 
biffgnar's Avatar
2006 TJ Wrangler 
 
Join Date: May 2008
Location: Westchester, NY
Posts: 14,630
Quote:
Originally Posted by durangoroadboss View Post
Hi guys, thanks. My 1999 TJ has 35s and I use it mostly off road. I have noticed a real problem stopping when rock crawling down very steep inclines - I pretty much have to push the brake pedal as hard as I can to get the jeep to stop on steep rocks. The emergency brake never seems to hold the Jeep very well either (I've adjusted it a few times). I've owned the Jeep since new, and front and rear brakes are in good condition - the Jeep only has 16000 miles - almost all off road. Maybe I'll look into the stock rear discs. Any other suggestions? Thanks.
Richard
Not uncommon with 35s. Rear discs aren't going to help. You need upgraded brakes overall. Look at Vanco Big Brake kits. Not cheap, but being able to stop well is important.
__________________
Thank you Dave Cole, Dynomax, Falken and all the Spec Class sponsors!!
biffgnar is online now   Reply With Quote Quick reply to this message
Unread 12-19-2014, 08:16 AM   #15
mrblaine
Wizard of Brakes
 
mrblaine's Avatar
1999 TJ Wrangler 
 
Join Date: Dec 2004
Location: Quail Valley, California
Posts: 26,623
Quote:
Originally Posted by btn View Post
One thing is that drums are self-energizing, unlike disks.
Yes, but I'm not sure that is a benefit or a detriment. It is just the nature of drum brakes.

Quote:
I'm not sure if it's as a rule, but they can be lighter, and they don't cause drag when the breaks aren't applied as disks can.
The reason discs are so prevalent is they are almost always lighter in the same application. If either is dragging, something is wrong and needs fixed.
__________________
I am Savvy
blackmagicbrakes.com
mrblaine is online now   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.