Rear Disc Brake Conversion

Hi, I just found this forum.

I owned a 1976 CJ-5, which I believed to be 1975 made originally. Has anybody ever do a rear brake conversion to discbrakes? Of course with the emergency brake system as well.

Appreciate all information shared.

Regards,
Ron

 

Really appreciate your advise spark. I've surfed to the site you suggested and it explains conversion for Dana 41 Rear and Dana 21 Front. My CJ5 uses Dana 44 Front and Rear. I've convert the front using CJ7 stock disc brakes. For the rear conversion actually I can use the same stock materials from CJ7, however, the trouble is on the emergency brake system. I need the emergency brake mainly to handle steep downhills.

I currently also doing a restoration project on my CJ3A. I will keep the project posted.

Maybe you have another bright idea?

 

So img getting ready to do this, can I sue the jeep rotor on the rear?

 

WOW!!!!!!!!!! $50 for new jeep calipers.... time to get the ole rotor turner out again, and go to the junkyard!!!

Im startign to wonder if I cant sue the same stuff we use on 9inches in the racecar.

Basicly, we get a chevy 5 on 5 11 inch rotor ( from monte carlo etc..)
and redrill the hub, then we use monter calipers, with afco gm caliper mounts which weld direct to the axle tube.

In my case, id need a 11 inch rotor from a 5 on 5.5 vehicle, say a newer 1/2ton ford truck... or, the jeep caliper... put on the wildwood racing calipers we have, and the afco weld on brackets, do the same up front, if I could find away to mount it where nothing interfers, as the knuckle turns.

 

Speedway motors also sells metric gm calipers with the e-brake setup for around $100 each.

 

I know my jeep isn’t an ECJ, but I would appreciate some assistance...

I have a 71 DJ-5B with an Offset, flanged axle Dana 44 and uneven spacing on the backing plate bolts. Can anyone tell me if, aside from redrilling the holes to accomodate the uneven spacing, this will work on my axle? I’ve looked at aftermarket bolt-on kits and the prices are prohibitive and seem to result in less available replacement options than the chevy conversion.

 

Check with Richard at R&P Customs at 503-557-8911. He may still have some brackets and rotors left. As I recall those were the only proprietary parts they used in the old R&P 4 WD Parts Kits. The rest were off the shelf parts. I think they used Camaro/Firebird rear calipers. Maybe the later model thin rotor Cadillac calipers.
The Cadillac Eldorado Calipers that fit the thick rotors were only something like a two year production, are no longer in production, and if you can find them expensive as hell.
Regardless which park brake calipers you use you HAVE to have a working park brake linkage that is adjustable. It the lever on the caliper is not adjusted correctly the park brake will NOT work correctly. This is why so many people complain about these systems being ineffective. Because THEY don't set them up correctly.

 

On my CJ6 D44 I used the Suzuki rotor and Nissan caliper setup, brackets were made up to suit and welded to axle. Brakes work great but the park brake is rubbish as there is too much friction on the cables (old and tired) and the cables from the splitter to the caliper are too long resulting in a weak pull action being achieved. Also as it's a park brake (foot operated) it's useless off road so I will at some point remove and install an actual hand brake and modify the cables as required at that point.

 

Thanks for your input. I’ll try him tonight. As far as the parking brake is concerned, I don’t want or need a mechanical e-brake if i run a hydraulic lock on the rear line.