Dayna 60-2 12"brake to 11" Brake conversion

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pksjeep
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Dayna 60-2 12"brake to 11" Brake conversion

Postby pksjeep » Sat Jul 07, 2018 10:42 am

I have a J-200 Thrift side truck with 11" brakes. I also have a 5 lug Dayna 60-2 track loc rear end that I want to put in, it had 12" brakes. I built 1/2" thick adaptors for the 11" backing plate, and turned out the bore in the in the backing plate to fit the brarings. The problem I have is every thing is tight ( brakes and assorted springs) behind the axle flange to the backing plate. I want to take out the 1/2" spacer to get more working space. Has anyone downsized the 12" brakes to 11" on this axle? What parts did you use>

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Kaiserman
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Re: Dayna 60-2 12"brake to 11" Brake conversion

Postby Kaiserman » Sat Jul 07, 2018 12:41 pm

You might look into MOPAR Dana 60-2 brakes. They used them in several big block muscle cars. Pretty sure those where 11" brakes.
1983 Wagoneer Limited Classic black
1971 J2500 Gladiator Custom-Cab Platform Stake on 126" wb. B350/T18A/D20 D60/D60-3 w/locker 4.10's Ramsey 8klb PTO winch, Day-brook dump. 235/85R16's
1969 J3800 Gladiator 3407Z Camper Truck. B350/T18A/D20 D44/D60-3 w/4.10's
1968 J3800 Gladiator 3406Z Custom Cab 160" wheel base dually. 24K miles. B350/T18A/D20 D44HD/D70 posi w/4.88's 7/50-16's
1963 J300 Gladiator Townside Buick 350/Th400/D20 D44/D53 4.27 gears. Stock Meyers plow, 225/95R16's

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fulsizjeep
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Re: Dayna 60-2 12"brake to 11" Brake conversion

Postby fulsizjeep » Sat Jul 07, 2018 1:02 pm

I don't know about any other Mopar applications but I do know the 67 Charger w/D60 had 11x2.5" brakes. The lug pattern for drums is 5x4.5" however.
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Nikkormat
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Re: Dayna 60-2 12"brake to 11" Brake conversion

Postby Nikkormat » Sun Jul 08, 2018 10:12 pm

Best option is a disk conversion, but i"m interested to hear how this turns out.

Does the dana 44 backing plate bolt on? I was under the impression they were totally different.
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Stuka
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Re: Dayna 60-2 12"brake to 11" Brake conversion

Postby Stuka » Mon Jul 09, 2018 9:55 am

Nikkormat wrote:Best option is a disk conversion, but i"m interested to hear how this turns out.

Does the dana 44 backing plate bolt on? I was under the impression they were totally different.


He is using an adapter to make the D44 backing plate bolt up.

To my knowledge, there aren't any disc brake kits for a Jeep D60-2. I know they exist for chrysler car D60-2's, but they use a different bolt pattern.
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Herk
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Re: Dayna 60-2 12"brake to 11" Brake conversion

Postby Herk » Mon Jul 09, 2018 8:57 pm

Try mounting the backing plates without the spacer and use a drum that's 1/2 deeper. Early 80's to 93 half ton Dodge could work, but the center register bore will need to be enlarged which is pretty straightforward lathe work. I was getting ready to mock up this setup to replace the disk conversion when my truck was hit.

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Nikkormat
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Re: Dayna 60-2 12"brake to 11" Brake conversion

Postby Nikkormat » Tue Jul 17, 2018 11:13 am

TSM MFG out of Colorado Springs CO makes a disk conversion kit and so can any of us.

Buy some weld on Caliper brackets for GM calipers from Speedway Motors.

1985 F150 4wd front rotors

Either 1978 Wagoneer front calipers (no E-Brake provision)
Or some Cadillac Eldorado rear calipers (not sure on the year) if you want parking brakes.
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Herk
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Re: Dayna 60-2 12"brake to 11" Brake conversion

Postby Herk » Tue Jul 17, 2018 8:21 pm

Anybody who suggests ElDorado calipers has either never owned a set, is a pathological liar, or should be charged with attempted murder. They really are that bad.

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Nikkormat
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Re: Dayna 60-2 12"brake to 11" Brake conversion

Postby Nikkormat » Tue Jul 17, 2018 9:35 pm

Herk wrote:Anybody who suggests ElDorado calipers has either never owned a set, is a pathological liar, or should be charged with attempted murder. They really are that bad.


I have heard they are terrible to adjust, any better suggestion?
Now this ol' Jeep needs a coat a' paint
But she makes up for what I ain't


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