Problem with old juice brake conversion

[Lizzie01]

Can someone please help me identify this rear brake conversion hardware.
It was done on a 30 Roadster. I had to replace all hydraulic components, however the rear drums bind when installed. No amount of adjustment on the shoes appears to resolve the problem. I did determine some warpage on the drum mounting surface. I am considering replacing the drums but am not certain what vintage ford drums they are.

Any information would be appreciated.

[old car guy]

Look like 1946 ford drums to me

[BILL WILLIAMSON]

Once had one like that. Laid it upside down on a heavy steel plate. With a steel block & a hammer, pounded out the visible distorsion. It was close enough to be turned on a drum lathe.
Bill W.

[Jim Brierley]

All V8 drums 1940-48 should all interchange even tho they may look a little different.

[Brendan]

the taper is different on a V8 rear . my 29 has juice brakes, when it was first done some one installed a axle shim, that is a Band-aid. the drum binds on the backing plate.the shim will move up the axle, inside the housing. i pulled the threads off my axle, i had to replace the axle, not fun. then what i had to do is chuck up the backing plate in a lathe, and take off a 1/16 off the outer rib. then chuck up the brake drum, it was done in
a brake lathe. there is a lip, i had to take a 1/16 off it. it can be done on a brake lathe but you need to find someone that can do it. then i had to mill the shoes, the hole thin is about 1/8 smaller. Google Dennis Cling, he makes parts for A's. he wrote a booklet about this . the hole trouble was it was not don before. that is why axle shims are no good,

[California Travieso]

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I tried his website, Cling's Aftermarket Parts, the other day and it was down. Anybody know anything about that?

David Serrano

[hardtimes]

Originally Posted by Brendan

the taper is different on a V8 rear . my 29 has juice brakes, when it was first done some one installed a axle shim, that is a Band-aid. the drum binds on the backing plate.the shim will move up the axle, inside the housing. i pulled the threads off my axle, i had to replace the axle, not fun. then what i had to do is chuck up the backing plate in a lathe, and take off a 1/16 off the outer rib. then chuck up the brake drum, it was done in
a brake lathe. there is a lip, i had to take a 1/16 off it. it can be done on a brake lathe but you need to find someone that can do it. then i had to mill the shoes, the hole thin is about 1/8 smaller. Google Dennis Cling, he makes parts for A's. he wrote a booklet about this . the hole trouble was it was not don before. that is why axle shims are no good,

Hey Brendan,
Well, it is common knowledge that the surfaces (between backing plate/drum edge) will need reduction , maybe on both, to correct that interference and allow proper fitment. There IS a shim made by Cling and others, that should be used to eliminate the grinding.
If I remember correctly, that shim (aluminum or steel material) was 1/4" thick.

BTW, it is nice if you have lathes and skills to use such. But, I just used grinder and accomplished same effect on backer plate and drum.

[Russ B]

It looks like the later Ford backing plates switched from right side to left placing the hydraulic cylinder on the bottom. Worked fine for me back in the sixties. I used a bit of brass shim stock on the drum taper and filed the inner lip of the drum and the backing plate lip both to get adequate clearance.

[Jim Brierley]

A and V8 tapers are the same. A shim is needed on most conversions because the A and V8 backers are different. I've found that if you trim about .100 thou off the V8 axle housing's outer flange, a shim is no longer needed. Clings trims a little off the drum to solve the problem.

[Brendan]

Originally Posted by Jim Brierley

A and V8 tapers are the same. A shim is needed on most conversions because the A and V8 backers are different. I've found that if you trim about .100 thou off the V8 axle housing's outer flange, a shim is no longer needed. Clings trims a little off the drum to solve the problem.

i took a 1/16 off the backing plate and a 1/16 of the drum and no spacer . 48 brakes on an A Rear. that is what i did and it worked