I have a 99 TJ 4.0. I want to convert my rear dana 44 with drum brakes to disk brakes taken from a dana 44 rubicon. What needs to be done? I heard I have to change my brake booster, is that right! Thanks.
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Disk brake conversion
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Do you have the brakes already? If not look here: http://www.northridge4x4.com/proddet...?prod=TF-DBK-J
You can probably piece a kit together, but the price on this one if fairly competitive. Also, don't by the emergency brake cables from Northridge, too expensive. Look here: www.wholesalemopar.com
You don't need a different booster, master cylinder or prop valve.
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The stock master cylinder works fine I stuck a dana 44 froman LJ under my little put put and it has worked fine for the last 3 years no drag on the brakes and stops better than drum brakes. If Josh got you the parkbrake cables also you are golden. Did you get his axle shafts? The retaining plates for axle shafts for drum brakes are different than the retaining plates for diskbrakes if need be I got a set of those or you can make a spacer
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Originally posted by nikos View PostYes I have them. So, I dont have to modify anything in the mastercylinder etc. Are you sure?
Positive. You will need the disc brake retainers like Art is talking about and you're good to go.
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Just remember that you need a press to get the bearings of and mors likely will destroy them.
Also when you press them off you need new retaining rings when you press it back together. So best course of action is new bearings seals and retaining rings
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I guess he just cut a slot in the plates to get them around the axles and yes those retainer plates are the same, as well as the same as you have.
I don't know about cutting a slot in them but its worth a try. At the worst the seals will start leaking. Would save a lot of hassle that is for sure
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Originally posted by aw12345 View PostThe stock master cylinder works fine I stuck a dana 44 froman LJ under my little put put and it has worked fine for the last 3 years no drag on the brakes and stops better than drum brakes. If Josh got you the parkbrake cables also you are golden. Did you get his axle shafts? The retaining plates for axle shafts for drum brakes are different than the retaining plates for diskbrakes if need be I got a set of those or you can make a spacer
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Originally posted by Tomb Raider 940 View Post
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All you need now is 2 axle retainer plates for diskbrakes you can use the one Josh has if you cut or press the bearings off. then sjot the retainers so you can slip them around your axle shafts its worth a try at the worst the seals start leaking
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you can order the retainer plates from mopar use the one for rubicon you will need to replace the back plate bolts and more then likly you will need to replace the wheel studs with longer ones. easiest way to remove the old bearings and retainer is too cut them off with a die grinder. and crack with a chistle. not too tough I did mine from zj junk yard stuff in a few hours.
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While I agree rear wheel disk brakes are generally better than drums, I chose to go with the Vanco front brake upgrade kit (see link below) when introduced a few years ago. These allow me to lock my 33x12.5x15 MTRs at will and others state same results with 35 or larger. Since front brakes do most of the work due to weight transfer, this is the most critical area for improvement. You can do a search here or on other forums, but Vanco kit developer's statement was that OEM calipers distort under heavy load with "oversized" tires, resulting in reduced brake pad to rotor surface area. I'm a satisfied customer...
Jeff
http://www.vancopbs.com/product_p/dkj1000.htm
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