rear disc brake conversion
- Thread starter myxj98
- Start date
ren
NAXJA Forum User
- Location
- frenchburg, ky
had you tried searching the archives? this is covered on a rather regular basis, and there are multiple write-ups for different axle set-ups.
RichP
NAXJA Forum User
- Location
- Effort, Pa
Yup, you can just about bolt in a ZJ's rear discs to a D35 or 8.25 and only have to enlarge the backplate hole for the axles to fit thru. All jeep parts too. I've linked to several step by step sites in previous postings w/pictures...
Ivan
I Jeep, therefore, I am..
- Location
- Greensboro, Ga
JeepinAudiophile
NAXJA Forum User
- Location
- Northborough, Massachusetts
is the parts list and procedure the same for a 29 spline axle?
http://www.go.jeep-xj.info/HowtoRearDiscs1.htm
Ive got an extra set of zj backing plates. Pm if interested.
Ive got an extra set of zj backing plates. Pm if interested.
Michaelarchangelo
NAXJA Forum User
- Location
- Daytona Beach
Expedient said:
Where can you get it?
Ebay: http://cgi.ebay.com/ebaymotors/1996...008QQitemZ180028860542QQrdZ1QQsspagenameZWDVW
BUT, I seem to recall that the author, Eric Zappe, has some connection to
..or, at least, someone here knows him?? You might do a search here, as I remember a thread mentioning the book...might be a more -in-the-family source.
BUT, I seem to recall that the author, Eric Zappe, has some connection to
..or, at least, someone here knows him?? You might do a search here, as I remember a thread mentioning the book...might be a more -in-the-family source.Rick Anderson
NAXJA Forum User
- Location
- Lusby, MD
Does the conversion to rear disc brakes really improve stopping power??
I've got no idea on an XJ, many cars its doesn't or at least the difference is so little its not worth the time, effort and money.
I have 4 wheel disc on my neon, and I love the never changing pedal height and feel, but I steer guys away from doing the swap because it litterally does absolutely nothing in improving stopping distance. So, even with junkyard parts, its a lot of money/time/effort just for the looks and/or pedal feel.
I imagine a 4WD Jeep is much different, but is it different enough to warrant the time/effort/money?
I've got no idea on an XJ, many cars its doesn't or at least the difference is so little its not worth the time, effort and money.
I have 4 wheel disc on my neon, and I love the never changing pedal height and feel, but I steer guys away from doing the swap because it litterally does absolutely nothing in improving stopping distance. So, even with junkyard parts, its a lot of money/time/effort just for the looks and/or pedal feel.
I imagine a 4WD Jeep is much different, but is it different enough to warrant the time/effort/money?
Expedient said:Ebay: http://cgi.ebay.com/ebaymotors/1996...008QQitemZ180028860542QQrdZ1QQsspagenameZWDVW
BUT, I seem to recall that the author, Eric Zappe, has some connection to
Lol, yeah, he has some connection to
.....his handle is EricsXJ and is on here quite often.Rick Anderson said:
I did the conversion to a 96 XJ with a D35 and ABS.
I never liked my original drums, when it rained they grabbed, noisy, poor performance of parking brake. My driveway has an incline, the parking brake action was poor. All these improved.
Stopping distance? I don't think that is expected to change, the prop valve will not allow more pressure than necessary, otherwise the rear brakes will lock.
JeepinAudiophile
NAXJA Forum User
- Location
- Northborough, Massachusetts
in my experience, the problem has been with the "self-adjusting" drums that never self adjusted on either of my XJ's... no adjusting of a disk brake.... the non adjusting actually cause an accident with my 95' xj in the rain... dmv found me not at fault due to mechanical fault... so im going with a disk for stopping, e-brake, etc... now would a proportioning valve from a ZJ help out as well? I know my friend's 5.9ZJ stopped my trailer w/ no trailer brakes on better than my XJ did.
JeepinAudiophile said:
I don't think that you have a choice, ZJs with drum rears don't use the same prop valve like the disc ZJs do.
Drums and discs don't have the same fluid needs.
When you get the ZJ valve you will find that the mounting bracket will not work on the XJ, you will have to remove the crimp, install the valve on your bracket and crimp it in place.
JeepinAudiophile
NAXJA Forum User
- Location
- Northborough, Massachusetts
I just got my RE6030 and a pair of new axles. I'm swapping my low pinion d30 front with my new high pinion d30, and also swapping in a much tighter rear chryco 8.25 axle... right now would be the time to change it since we're disconnecting all the brakes and doing the zj disc conversion hopefully this weekend and into the week. I just want to be sure I get all the right pieces and put it tohether befor i close it up and fill it with fluid.
muddshutter
NAXJA Forum User
- Location
- Fighting Giblet Burg, Va
Teraflex also makes a Kit as well, if you have the extra cash....
gregmondro
NAXJA Forum User
- Location
- West
I just did the rear disc conversion. $86 bucks from a junkyard for all the parts. $40 for the backing plates from a ZJ with the d44a rear end (v8 ZJ). You don't have to grind out as much material with the d44a rear ends to fit them over a 8.25 since the d44a has bigger axle tubes then a d35c.
Then another $46 at a u-pull it place for the calipers+rotors.
under $200 sure beats the expensive price that Teraflex wants.
Then another $46 at a u-pull it place for the calipers+rotors.
under $200 sure beats the expensive price that Teraflex wants.
fairhopexj
NAXJA Forum User
- Location
- Alabama
Greg,
I've been thinking about doing this conversion. Is there a big improvement in braking?
I've been thinking about doing this conversion. Is there a big improvement in braking?
BlueGerbil
NAXJA Forum User
- Location
- Germany
Have you thought about swapping in a Ford 8.8 axle from a Explorer? Gives you a much sturdier axle than the D35 and disc brakes "for free".
"Scheibenbremsen" means disc brakes (go figure...)
"Scheibenbremsen" means disc brakes (go figure...)
