Rear disc brake conversion

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Rinkle_Stinkle
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Joined: Thu Nov 16, 2017 9:22 am

Rear disc brake conversion

Post by Rinkle_Stinkle »

So I'm looking for ideas on converting the rear brakes to disc.

stumbled across this kit. https://davescustomsunlimited.com/wagon ... acket-kit/
thoughts on it? any other kits or build breakdowns for this conversion?
1988 Grand Wag
AMC 360 with 96K
Edelbrock intake manifold
260H Comp Cam
Edelbrock AVS 4brl carb
Headman headers
2" to thrush muff with 3" tip exhaust

RamJetFSJ
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Re: Rear disc brake conversion

Post by RamJetFSJ »

For the money, this kit is real complete, with everything needed except the rotors to be sourced locally/rock auto. This is the kit I would use if I did it. I'd rather know all the parts were included and would work together the first time.
http://999offroad.com/product/disc-brak ... ize-jeeps/
80 Wag in 73 attire, Ram Jet 350 power
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Cecil14
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Re: Rear disc brake conversion

Post by Cecil14 »

The only difference I see in the kits is the lack of prebent hard lines and calipers in the first one. As with the rotors, calipers can be sourced locally. Generally people use 80s monte carlo front calipers if you don't care about ebrake, or '78 caddy eldorado rear calipers if you want ebrakes (looks like what the second kit includes). Either of those can easily be sourced locally. The caddy calipers can get pricey, though, especially if you don't have a core to return. The second kit may end up cheaper, in that case, you'd have to price things to be sure. As for the hard lines...that's just going to increase shipping costs. Lines are stupid cheap and easy to bend.


aa
1983 J-10 - 4.6L(MPFI)/CS130D/Hydroboost/NV3550/D300/44/44/3.54/Disc-Disc/32s/42 gallon 'burb tank
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Rinkle_Stinkle
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Re: Rear disc brake conversion

Post by Rinkle_Stinkle »

thanx for the info guys! I'm going to check out that other company as well. I believe you are both right. The kit from 999 offroad looks to be the more complete of the two kits. However Daves kit comes in cheaper once you add in rotors and calipers. The hard lines are the trick, but I wouldn't imagine they'd be extremely expensive.

Daves: $210 + $60 for calipers from Eldorado + $50 for 2 chevy half ton rotors = Total of $320 (excluding hard lines)

999: $475 + $50= total $525

am I missing something?
1988 Grand Wag
AMC 360 with 96K
Edelbrock intake manifold
260H Comp Cam
Edelbrock AVS 4brl carb
Headman headers
2" to thrush muff with 3" tip exhaust
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Stuka
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Re: Rear disc brake conversion

Post by Stuka »

999 Offroad offers an FSJN discount: http://fsjnetwork.com/forum/viewtopic.php?f=34&t=4134
2017 JKU Rubicon
Pevious Jeeps: 1981 J10, 1975 Cherokee, 2008 JK, 2005 KJ, 1989 XJ
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Cecil14
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Re: Rear disc brake conversion

Post by Cecil14 »

Looking again, the 999 offroad kit includes a cable of some kind for the ebrake connection to the calipers, not sure what that entails exactly. I've never had stock ebrakes or cables on my truck (long gone by the time I got it), so I don't know if the stock cables will fit on the caddy calipers directly?


aa
1983 J-10 - 4.6L(MPFI)/CS130D/Hydroboost/NV3550/D300/44/44/3.54/Disc-Disc/32s/42 gallon 'burb tank

RamJetFSJ
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Re: Rear disc brake conversion

Post by RamJetFSJ »

You'll need soft lines also. And brake pads (cant tell for sure if 999s kit comes with pads or not). 999 also includes specific bracketry to make the e-brake actually hook up and work, which Ive heard can be a pain with pieced together parts. Where are you finding E-Brake Calipers for $30 ea?
80 Wag in 73 attire, Ram Jet 350 power
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jpswapmohn
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Re: Rear disc brake conversion

Post by jpswapmohn »

I used TSM a decade ago to convert my rear D44. It has worked well, although I never did get around to swapping the calipers to get an e-brake working. I think they are still around.
One day I will wake up and realize that my jeep is complete...one day, I just know it.
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95YJ, STaK, D44's, SOA, ARB's, Bilstein 5150s, 35" KM2's
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Rinkle_Stinkle
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Re: Rear disc brake conversion

Post by Rinkle_Stinkle »

jpswapmohn wrote:I used TSM a decade ago to convert my rear D44. It has worked well, although I never did get around to swapping the calipers to get an e-brake working. I think they are still around.
I checked them out but it appears they don't offer the conversion for the wagoner anymore.
1988 Grand Wag
AMC 360 with 96K
Edelbrock intake manifold
260H Comp Cam
Edelbrock AVS 4brl carb
Headman headers
2" to thrush muff with 3" tip exhaust
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tgreese
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Re: Rear disc brake conversion

Post by tgreese »

Why do you want to convert to disks? A working parking brake is significantly easier with drums. And the rear brakes don't do much except keep the back end of the car from swinging around in hard braking. Most of the stopping is done by the front wheels.

Maybe a hydroboost would be a better upgrade?
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
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Rinkle_Stinkle
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Re: Rear disc brake conversion

Post by Rinkle_Stinkle »

tgreese wrote:Why do you want to convert to disks? A working parking brake is significantly easier with drums. And the rear brakes don't do much except keep the back end of the car from swinging around in hard braking. Most of the stopping is done by the front wheels.

Maybe a hydroboost would be a better upgrade?
I had looked into doing that as well. I'm not sure if I will replace to disc or not. I already have the hydro boost on the upgrade list however I'm eventually going to need to replace/fix most of the rear in the upcoming 2 years and had thought while I'm doing that it wouldn't be much work to switch over to grab that additional 25% stopping power esp if I go slotted.
1988 Grand Wag
AMC 360 with 96K
Edelbrock intake manifold
260H Comp Cam
Edelbrock AVS 4brl carb
Headman headers
2" to thrush muff with 3" tip exhaust
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Grand_Wag_85
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Re: Rear disc brake conversion

Post by Grand_Wag_85 »

tgreese wrote:Why do you want to convert to disks? A working parking brake is significantly easier with drums. And the rear brakes don't do much except keep the back end of the car from swinging around in hard braking. Most of the stopping is done by the front wheels.

Maybe a hydroboost would be a better upgrade?
This is for my J2000. It's already hydroboost (with drum front and rear) and I have this fatal attraction to deep water crossings/mud. I've noticed water and drum brakes don't play well together.

Converting to open knuckle D44 front and AMC 20 rear.

I got a line on a kit to mount the parking brake on the D20.
82 J10
77 J10 Golden Eagle 401
88 GW

You know it's bad when your car is on the EPA's 10 most wanted list!
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