Brake Identification Info

Hey Guy's
I picked up some parts from a Friend and would like to know if they would work for a front Disc conversion?
I have the stock Dana 27 in the front of my 1971 CJ5 V6 with 10" brakes and 3.73 gears.
I also have a set of axles from his 1972 CJ5 I6 with 11" brakes and 3.73 gears. Dana 30 and Dana 44 center pumpkin.
He was given them by someone that said they where the correct parts to make the conversion.
I have no idea what they came off of or if they came off the same vehicle.
Here are some pictures I hope.
Spindle

Caliper Bracket with part numbers Bendix 3202612-L and 3202613-R if this helps.

And the cover.


Any Ideas?

 

The "stepped spindle is for use with disk brakes.
It requires a large inner wheel bearing and seal ....

 

Thank You Oldtime.
Any idea what they came off of?
Wondering what calipers I would need?

 

If they have 6 hole flanges (not 5 hole) they are probably from a 1977-1981 CJ.

 

The disc brake components here were removed from a 76-77 CJ model.
These came from a D30 and could be used to convert a 72-75 drum brake 30 to disc brakes.
Some of these items pictured have the same reference part numbers you mention.
This set-up uses the "thick" 1-1/8 rotors.

http://i38.photobucket.com/albums/e121/348Win/IMG_0950_zpsypc6bxji.jpg

 

Jim is correct.........1.125" thick Vented Rotors.......available from 76-78 Commonly referred to as the Jeep "6 bolt" / "Big Brake" Option in those years.......came with Heavy duty 6 bolt hubs , 6-bolt caliper mounting bracket & Premium 6 bolt Warn Locking hubs........excellent front brake package for the Dana 30.

Caliper part # is Raybestos #4085L & 4086R The Rotor would be a # 5020R..........There was three Front Brake packages in those years.........11" drums , 2 -bolt Disc with solid Rotor and the 6-bolt Disc with vented Rotors.........always refer to the 6-bolt Disc as that is the key reference in the parts books. Calipers are held on via a Clip and a socket head allen bolt.

 

All very good info. Super helpful. And much appreciated.
Thank You!

 

So was this used on drum brakes in '76 as well? 1977 was the first year for disk brakes on a CJ.

 

I would agree with that...........and the Big Brake Option I thought with the 3.1 inch bore piston and vented 1.125" wide rotors was only late 1977-1978 although lots of Parts books list the parts for a CJ from 76-78......so who knows?

 

The only new Jeep I ever owned was a 1976 CJ-5.
I sure don't recall ever seeing the 76 vintage with disk brakes installed.

 

Lynn
I might just do that. Let me explain a little bit better. I bought the Jeep with the intention of keeping it mostly stock.
Then looked further into the 10" brakes and realized the cost and quality of brakes pointed towards the 11".
I bought the Axles with the intention of using the 11" Brakes and saving the rest for back-up.
When my buddy gave me the Disc brake parts I started thinking OK Disc's.
I'm no stranger to Fabrication. See the thread I did years ago on my 1973 Ford Econoline Brakes and steering.
http://econolines.ipbhost.com/index.php?showtopic=1672
I'm no expert just a hobbyist with some skills and few tools.
So back to the Jeep. I now need to study up on Dana 30 swap and figure out what I really want to do to my Jeep.
Just so you know my Jeep has not been driven since 2011. I just bought it a couple months ago. Needs brakes first
the pedal just hits the floor.
To make things better right before I went to get the Axles I found why I think it was parked.
The rear Dana 44 is toast. Spin the Drive shaft nothing. Spin the wheels nothing.
Wonder if the gear set from the 72 will slide into my 71 housing?

 

putting in the dana 30 was easy on my '71. I used a '74 dana 30 and changed from the knuckles out from a '78 with the "big brakes". there was nothing wrong with my 27 but just wanted better turning radius and more parts availability for the axle. And not to mention disc brakes.

 

as long as it is both 3:73 and both cases are series 3 you should be able to use the gear set from the '72

 

I swapped in a D30 to replace my D25. I had chevy disk set up on my d25 and that bolted right on with a slight mod to the d30. Spindles interchange and hubs interchange but they are different between the disk and the drum. Its an easy swap if the gears are the same, if not its a gear change. Thats what i did.

 

Aren't the side gears of the '72 D44 a different spline count from the '71 D44?

 

should both be 30 spline if both are flanged axles

 

In '76 disc brakes were an option, one that was not frequently purchased. In '77 they became standard. I've seen two bone stock, all original, one owner '76 CJ's with discs and had a few '76 Dana 30's with discs, but not very common.

 

All the Jeep Corp. data is against it. It does not appear in the '76 FSM. Parts book says 77/78 for those brakes. It does not appear in the '76 sales literature.

Could have been dealer installed once the 1977's were out - it would have been a straightforward change of parts. My dealership offered to sell me my '75 CJ-6 (one of the tow last that were received by Brian) with either the wide ratio or close ratio T-18 transmission, delivered. No such option was available from the factory. Everything was bolt-in except for the rear drive shaft. Similar tactics could have been used to sell the remaining '76s on the lot that did not have disk brakes.