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Rear Disk Brake Conversion Kit |
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maddvector 
AMC Apprentice 
Joined: Jul/24/2018 Location: Walker, LA Status: Offline Points: 148 |
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 Topic: Rear Disk Brake Conversion KitPosted: Feb/08/2019 at 7:35am |
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Will this rear brake conversion kit work on my 71 Javelin? Can be used on Wranglers 90-06 and Cherokees 84-01. JEEP Dana 35 44 Rear Axle Disc Brake Conversion Kit Wrangler Cherokee Grand https://www.ebay.com/itm/113186797142?ViewItem=&item=113186797142 |
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tufcj
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Supporter of TheAMCForum Joined: Jul/10/2007 Location: Watkins, CO Status: Offline Points: 4086 |
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Posted: Feb/08/2019 at 8:26am |
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I doubt it. The Dana35 is very similar to the AMC15 used in 6 cylinder cars. Much different from the AMC20 used in your Jav. I know the bolt pattern on the backing plates is different.
Bob tufcj
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69 AMX
74 Javelin AMX 67 Rogue If you need a tool and don't buy it... you'll eventually pay for it... and not have it. Henry Ford |
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maddvector
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Joined: Jul/24/2018 Location: Walker, LA Status: Offline Points: 148 |
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Posted: Feb/08/2019 at 9:45am |
If I find a disk brake conversion for a Jeep AMC20 rear end will that work? Does it have to be from a certain year for it to work on my 71 Javelin? Thanks for the reply!
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matty 401
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Joined: Jul/06/2007 Location: Iowa Status: Offline Points: 1727 |
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Posted: Feb/08/2019 at 10:04am |
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i believe all AM20's use the same backing plates
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72 matador 401 the beast
79 concord 2 door 72 matador 304 grasshopper 68 Rogue 406 93 Cherokee 4.0 5 speed |
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maddvector
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Joined: Jul/24/2018 Location: Walker, LA Status: Offline Points: 148 |
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Posted: Feb/08/2019 at 11:35am |
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'76-'86 Jeep CJ 5 - 7 & 8 Model 20 axle fits two piece & one piece axles. Complete Kit includes:
CNC cut brackets, fasteners, short cable extension (connects park brake
cable), stainless brake lines, new 11 9/16" vented rotors & New
(not rebuilt) Calipers with a parking brake. Fits 15 Inch and Larger
Disc Brake Style Wheels $659.95 Kit # 2590+  This one should work? http://www.tsmmfg.com/Rear%20Disc/2590.html
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White70JavelinSST
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Joined: Aug/08/2012 Location: Minnesota Status: Offline Points: 4866 |
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Posted: Feb/08/2019 at 11:52am |
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Don't forget the wheel lug bolt pattern on a 71 Javelin is 5 on 4.5 inch spacing. I think the wheel lug bolt spacing on a Jeep is 5 on 5.5 inch spacing. or maybe 5 inch spacing can't remember If they were the same as AMC cars, us AMC car guys would have access to new AMC20 hubs. The Jeep aftermarket makes and sells hubs for Jeep AM20 with the 5 on 5.5 inch spacing. Guess I'm trying to tell you that everything else will bolt up from the kit above, but your wheels won't. There are aftermarket suppliers that make kits for AMC cars. Wilwood is one of them, I think others do as well.
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70 Javelin SST, second owner, purchased 1972
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maddvector
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Joined: Jul/24/2018 Location: Walker, LA Status: Offline Points: 148 |
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Posted: Feb/08/2019 at 12:15pm |
I appreciate the information. After researching the bolt pattern only the Wrangler used a 5x4.5 bolt pattern. I will more than likely use the wilwood. I was trying to find something more cost affordable...
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akimmet
AMC Nut
Joined: Aug/02/2012 Location: Republic OH Status: Offline Points: 428 |
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Posted: Feb/08/2019 at 12:22pm |
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A kit intended for a CJ won’t work because the rotors will have a 5x5” wheel stud pattern. You will need a rotor with 5x4.5”.
Tsmmfg makes such a kit, just make sure it is for an AMC car and not a Jeep.
I have done some preliminary research on using stock rear discs from a 92-95 Ford Crown-Vic. These rotors fit amc axles perfectly and the backing plates have the same mounting flange pattern as an AMC 20. I have actually physically confirmed this, the AMC has the same axle-flange bolt pattern as the small ford 8” and 9”. Unfortunately center hole on the Crown-Vic backing plates is far too large. There would me no way to hold the bearings in the axle. One could potentially install an outer seal plate behind the backing plate, but I haven’t tried this yet. Since I haven’t done a full mock-up yet, I still don’t know if the offsets would be close enough to even work. |
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Mopar_guy
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Posted: Feb/08/2019 at 1:51pm |
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I did a swap with the same stuff and no it won't work. I found Ford rotors that worked using a similar bracket. Here's a kit you need to use https://www.tsmmfg.com/Rear%20Disc/american_motors.html I did a good write up on this with lots of details here. http://theamcforum.com/forum/rear-disc-brake-install-for-amc-20_topic49632_post447769.html?KW=AMC+20+rear+disc+brakes#447769 Hopefully you can find some of that useful. The guy that I worked with didn't get any orders so he never made them. To bad because he had a good price.
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maddvector
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Joined: Jul/24/2018 Location: Walker, LA Status: Offline Points: 148 |
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Posted: Feb/08/2019 at 2:13pm |
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SSBC Performance Brakes A150-2 Drum To Disc Brake Conversion Kit Built In Parking Brake Added Safety/Street Legal Standard Off The Shelf Pads For Easy Replacement Below is an abbreviated list of applications for the Drum To Disc Brake Conversion Kit. AMX, Javelin, American Motors, 1974, 1973, 1972, 1971, 1970, 1969, 1968 The kit isn't listed on their web site but you can call 1-800-448-7722 and order it. It should work on other AMC cars with the Model 20 Rear End. It takes 3 weeks for them to get it to you. The cost is $588 + shipping. Chris game me a 10% Military Discount.
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tufcj wrote: