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11" Brake Upgrade - Tips and Lessons Learned? |
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3A Steve 
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Joined: 10 June 2016 Location: West Virginia Status: Offline Points: 879 |
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 Posted: 24 July 2021 at 10:34pm |
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I converted my 51 Willys wagon to disc brakes and have the old set of brakes sitting in a box. Would be interested in trying them on my 3A.
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AFBRAT
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Joined: 05 Nov. 2013 Location: USA Status: Offline Points: 21 |
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Posted: 24 July 2021 at 9:20pm |
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Not meaning to highjack the thread but my question seemed appropriate to the topic. Will Willys pickup truck brake backing plates from the Dana 53 axle work as a direct bolt on to the CJ2a Dana 41 axle? If not a direct bolt on, is it possible with any modifications.
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Mark W.
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Sponsor Member Joined: 09 Nov. 2014 Location: Silverton, OR Status: Offline Points: 7982 |
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Posted: 24 July 2021 at 12:55pm |
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SO everyone not using a stock proportioning valve with built in residual pressure valves is using something like Wilwood valves (10PSI for drum brakes). I have a suggestion for a sealer to use on the 1/8NPT threads on the adapters if you happen to mess up the preapplied sealer. Permatex 54540 Pneumatic and Hydraulic Sealant not cheap but highly recommended on the Hot Rod forums.
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Chug A Lug
1948 2A Body Customized 1949 3A W/S 1957 CJ5 Frame Modified Late 50's 134L 9.25"clutch T90A D18 (1.25") D44/30 flanged E-Locker D25 5.38 Since 1962 |
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Bill2A
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Joined: 01 Mar. 2018 Location: Fort Worth, Tex Status: Offline Points: 517 |
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Posted: 24 July 2021 at 11:59am |
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Please don't be offended if I consider you all knowing.
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1946 CJ2A 14098
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oldtime
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Joined: 12 Sep. 2009 Location: Missouri Status: Offline Points: 4184 |
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Posted: 23 July 2021 at 1:22pm |
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I don’t have anything other than Jeep and some OEM part numbers.
Those are CJ numbers and may be the same as some of the Jeep “J” trucks, Wagoneers etc. Can’t do it all …so no Ford, Chevy, Toyota nor Lamborghini numbers from me. Ha ha ha ! Typical sellers rarely identify the plates by the original part number. Most any Jeep from Late 60’s to the 80’s will use late design 11” Bendix. Front drum CJ parts from 1972 through 1976 are ideal.
Edited by oldtime - 23 July 2021 at 1:31pm |
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Currently building my final F-134 powered 3B .
T98-A Rock Crawler using exclusive factory parts and Approved Special Equipment from the Willys Motors era (1953-1963) Zero aftermarket parts |
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Bill2A
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Joined: 01 Mar. 2018 Location: Fort Worth, Tex Status: Offline Points: 517 |
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Posted: 23 July 2021 at 12:50pm |
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Oldtime, is the last P/N listed a Ford backing plate?
If not do you know anything about using them?
I would guess they would be easier to find. I might even have a spare pair from my '56 F100. |
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1946 CJ2A 14098
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OnlyOneDR
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Joined: 05 July 2016 Location: R Status: Offline Points: 459 |
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Posted: 23 July 2021 at 10:51am |
No one manufactures the backing plates new, you have to find good used ones.
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Searching for time to put it all together...
1950 CJ-3A #37751 In Pieces 1969 Chevy Blazer Resto-Mod Waiting for its day... 2001 Nissan Frontier Crawler Adventure Rig |
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oldtime
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Joined: 12 Sep. 2009 Location: Missouri Status: Offline Points: 4184 |
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Posted: 23 July 2021 at 9:08am |
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That is what I already posted.
Those are all backing plate numbers. I just typed in on eBay and saw a set of two plates available. Edited by oldtime - 23 July 2021 at 10:15am |
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Currently building my final F-134 powered 3B .
T98-A Rock Crawler using exclusive factory parts and Approved Special Equipment from the Willys Motors era (1953-1963) Zero aftermarket parts |
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Bills46CJ2A
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Joined: 22 July 2021 Location: St. Louis Status: Offline Points: 9 |
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Posted: 23 July 2021 at 8:34am |
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What are the part numbers and supplier for
the 11 inch backing plates you used for 11in upgrade? Thanks
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WSPete
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Bills46CJ2A
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Joined: 22 July 2021 Location: St. Louis Status: Offline Points: 9 |
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Posted: 22 July 2021 at 9:38pm |
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Thanks for the information.
Going to the parts store tomorrow. Thanks
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WSPete
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oldtime
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Joined: 12 Sep. 2009 Location: Missouri Status: Offline Points: 4184 |
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Posted: 22 July 2021 at 7:40pm |
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Front Commando part numbers are:
943144 left 937949 right Front Intermediate CJ’s are: 8121379 left 8121380 right Front post 1975 CJ’s are: 32301047 left 32301048 right Rear backing plates will accept park brake cables. You will need to drill two new 3/8” mount holes on these. Rear post 1975 CJ’s are: 3201051 left 3201052 right There are many other 11” Bendix plates that can be made to fit. Edited by oldtime - 22 July 2021 at 8:02pm |
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Currently building my final F-134 powered 3B .
T98-A Rock Crawler using exclusive factory parts and Approved Special Equipment from the Willys Motors era (1953-1963) Zero aftermarket parts |
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Bills46CJ2A
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Joined: 22 July 2021 Location: St. Louis Status: Offline Points: 9 |
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Posted: 22 July 2021 at 5:54pm |
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Do you have part numbers for the 11 inch backing plates
that will fit 46CJ2A? And a supplier. Thanks Bills46CJ2A
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WSPete
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uncamoney
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Joined: 26 June 2019 Location: greeley co Status: Offline Points: 451 |
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Posted: 17 Apr. 2021 at 12:31pm |
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11" brakes were one of the best improvements I did on my Jeep.
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john
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ndnchf
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Sponsor Member x 2 Joined: 22 Sep. 2017 Location: Virginia Status: Offline Points: 2177 |
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Posted: 17 Apr. 2021 at 12:18pm |
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Resurrecting this old discussion. We've had a number of guys join who may find this useful. But also because I finally got around to installing the 11" rear brakes I put together two years ago. But rather than just swap them on the D41, I ended up using a D44 built with new 5.38 gears and a limited slip diff. I now, finally have nice 11" brakes all around
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1948 CJ2A - It goes nowhere fast, but anywhere slow.
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Oldpappy
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Joined: 09 Apr. 2018 Location: Tennessee Status: Offline Points: 4905 |
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Posted: 31 Dec. 2020 at 4:22pm |
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My CJ2A had disc brakes on the front when I got it, but they were the larger Ford calipers which require spacers to clear the wheels. They worked okay, but I went with 11" drum brakes when I replaced the front axle.
Were I to ever decide do a conversion to disc brakes I would not use these Ford calipers, so anybody who wants those can have them for price of postage. Probably be cheaper to buy new rotors locally, but the brackets and calipers should fit in a flat rate box so shipping wouldn't be too much. About a week ago I shipped two complete 9" brakes, drums and all, across country in the large flat rate box for only $21.10.
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If you can't get there in a Jeep you don't need to be there!
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64CJ5
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Sponsor Member Joined: 15 Nov. 2013 Location: NE Wyoming Status: Offline Points: 942 |
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Posted: 31 Dec. 2020 at 3:08pm |
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Some years ago I purchased a kit from Mile High Jeep Rebuilders in Denver. The 11" brakes stop my CJ5 with authority, most of the time. Like all drum brakes they do not work well when wet. Whenever we cross hub deep water the brakes get wet and do not work. I am not looking to replace the 11" brakes but plan on a disc upgrade on the M38.
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64CJ5 "Eeyore"
01TJ "Tigger" 52 M38 Severely demilitarized, "Popeye" The Coast Guard Jeep. 14 JK "Jake" To Trust Government Defys Both History and Reason. PUBLIC LAND Owner/User |
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OnlyOneDR
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Joined: 05 July 2016 Location: R Status: Offline Points: 459 |
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Posted: 30 Dec. 2020 at 7:24pm |
Thank you! I needed a set for the rear, nothing critical just nice to have. Had not looked for these in a while.
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Searching for time to put it all together...
1950 CJ-3A #37751 In Pieces 1969 Chevy Blazer Resto-Mod Waiting for its day... 2001 Nissan Frontier Crawler Adventure Rig |
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Oldpappy
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Joined: 09 Apr. 2018 Location: Tennessee Status: Offline Points: 4905 |
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Posted: 30 Dec. 2020 at 3:47pm |
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Noticed 4 sets of 11" backing plates which would work for this conversion on Ebay today.
All came up with a search for 11" brake plates CJ Two sets look like CJ5 plates - Same seller - One set $50 Plus $39 shipping, other $85 Free Shipping so about same price for either. These include some parts, one looks like drums too. One set of DJ5 backing plates - Plates only, look nice, are cleaned and painted $149.50 Free Shipping One set of Willys Truck backing plates - $75 Free Shipping - These are manual adjustment with single eccentric. I look for these regularly, but I already have what I need for my two Jeeps. Since these are getting hard to find thought I should post here in case someone else is planning this upgrade.
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If you can't get there in a Jeep you don't need to be there!
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Bills46CJ2A wrote: