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Old 02-13-2018, 08:40 AM   #1
robeastunder
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Default 1973 Open Knuckle Dana 30 Disc Conversion

So big question...does anyone make a straight forward Disc Conversion for the 1973 Scout which has a Dana 30 Open Knuckle setup, I have a 77 Donor Scout which has Dana 44 front and rear with Disc Brakes but the whole brake system would need a rebuild as its a plow truck that has not had brakes in over 8 years so things are a bit crusty. The 1973 that i am restoring is not going to be a trail rig just a fun grocery getter, so i really dont need the nicer front axles......any advice on upgrading my brakes with my existing setup would be greatly appreciated.

-Rob
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Old 02-13-2018, 09:31 AM   #2
Hondo
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Default Re: 1973 Open Knuckle Dana 30 Disc Conversion

I've got a 75 Scout that has a factory D30 with discs in front. Pretty sure you just need everything from the "Cs" out, plus the vacuum booster, proportioner, and brake lines from a 75 or newer Scout.
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1975 Scout II healthy 258, Wide T19 , 4:1 D300 3:54s,
1972 Real clean stock Scout II P/S, P/B, 345, T18, 3:73s
1969 Mach I. Balanced ported 351W, 650 double pumper, Super T10, Detroit locker with 4.11s. Lowered with racing springs, bars, Konis etc.
(Don't worry about getting arrested when I drive the Scouts).
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Old 02-13-2018, 10:26 AM   #3
robeastunder
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Default Re: 1973 Open Knuckle Dana 30 Disc Conversion

And yours is an open knuckle correct?
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Old 02-13-2018, 11:00 AM   #4
Hondo
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Default Re: 1973 Open Knuckle Dana 30 Disc Conversion

Yes, I can snap some pictures later if you like.
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1975 Scout II healthy 258, Wide T19 , 4:1 D300 3:54s,
1972 Real clean stock Scout II P/S, P/B, 345, T18, 3:73s
1969 Mach I. Balanced ported 351W, 650 double pumper, Super T10, Detroit locker with 4.11s. Lowered with racing springs, bars, Konis etc.
(Don't worry about getting arrested when I drive the Scouts).
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Old 02-13-2018, 11:45 AM   #5
robeastunder
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Default Re: 1973 Open Knuckle Dana 30 Disc Conversion

I would appreciate that.

-Rob
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Old 02-13-2018, 12:42 PM   #6
Scooter
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Default Re: 1973 Open Knuckle Dana 30 Disc Conversion

Also, don't forget about the master cylinder. Once you convert the front axle to disc brakes, the original master cylinder won't be compatible.
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The fleet
73 Scout II - 73 Beast SOA, Shackle Reversal. Several things being re-worked through out.
72 Scout II - Ole Yeller - Finally rolling around town.
74 Scout II - Barrel Rolled - Rest in peace
72 Scout II = SOLD
51 Studebaker pickup - A non running project. Slowly in the works
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Old 02-13-2018, 01:08 PM   #7
robeastunder
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Default Re: 1973 Open Knuckle Dana 30 Disc Conversion

Quote:
Originally Posted by Scooter View Post
Also, don't forget about the master cylinder. Once you convert the front axle to disc brakes, the original master cylinder won't be compatible.
Did you do you 73 or were you lucky enough that someone bought the disc upgrade....i have 77 parts rig i am going to rob things from, just didn't feel like completely rebuilding, re-gearing axles, but maybe that will be a better option in the long run, but id rather not go down that road due to time contraints
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Old 02-13-2018, 06:17 PM   #8
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Default Re: 1973 Open Knuckle Dana 30 Disc Conversion

Quote:
Originally Posted by robeastunder View Post
Did you do you 73 or were you lucky enough that someone bought the disc upgrade....i have 77 parts rig i am going to rob things from, just didn't feel like completely rebuilding, re-gearing axles, but maybe that will be a better option in the long run, but id rather not go down that road due to time contraints
In my '72 ole yeller, some P.O. was kind enough to swap in a complete D-44 from a later scout with disc brakes. My 73 beast came from factory with a D-44 with disc brakes(there is a story behind that).

I have actually done a few of these swaps over the years. The parts that Hondo mentioned, plus the master cylinder for disc/drum will be needed in order to convert your front D-30 from drums to disc. If memory suits my feable mind, all the outers from the C's to hubs should be be interchangeable between the two complete axles. Or bite the bullet and swap in the complete D-44 and do a gear change/rebuild. That way you know that the front axle is all freshly rebuilt when installed. Which is something I personally would do if I was in the same delima.
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The fleet
73 Scout II - 73 Beast SOA, Shackle Reversal. Several things being re-worked through out.
72 Scout II - Ole Yeller - Finally rolling around town.
74 Scout II - Barrel Rolled - Rest in peace
72 Scout II = SOLD
51 Studebaker pickup - A non running project. Slowly in the works
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Old 02-14-2018, 05:42 AM   #9
robeastunder
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Default Re: 1973 Open Knuckle Dana 30 Disc Conversion

Quote:
Originally Posted by Scooter View Post
In my '72 ole yeller, some P.O. was kind enough to swap in a complete D-44 from a later scout with disc brakes. My 73 beast came from factory with a D-44 with disc brakes(there is a story behind that).

I have actually done a few of these swaps over the years. The parts that Hondo mentioned, plus the master cylinder for disc/drum will be needed in order to convert your front D-30 from drums to disc. If memory suits my feable mind, all the outers from the C's to hubs should be be interchangeable between the two complete axles. Or bite the bullet and swap in the complete D-44 and do a gear change/rebuild. That way you know that the front axle is all freshly rebuilt when installed. Which is something I personally would do if I was in the same delima.
I appreciate the input, I am leaning towards full axle/brake rebuild from the stuff i can rob off my parts truck, i was hoping for an easy solution but as i have been finding out with my 73 restoration nothing is easy and everything takes way longer than you think and you might as well do it right the first time so you dont have to touch it again.
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Old 02-14-2018, 08:03 AM   #10
Hondo
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Default Re: 1973 Open Knuckle Dana 30 Disc Conversion

Lets see if I recall how to post multiple pics. Rotor is missing form group shot, but that's what is entailed from "Cs" out. Also not present are ball joints, bearings, seals etc. Your present hubs should work.
http://forums.ihpartsamerica.com/att...1&d=1518624113
http://forums.ihpartsamerica.com/att...1&d=1518624113
http://forums.ihpartsamerica.com/att...1&d=1518624113
http://forums.ihpartsamerica.com/att...1&d=1518624113
Attached Images
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File Type: jpg IMG_0053.jpg (73.2 KB, 36 views)
File Type: jpg IMG_0054.jpg (68.8 KB, 32 views)
File Type: jpg IMG_0056.jpg (84.9 KB, 31 views)
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1975 Scout II healthy 258, Wide T19 , 4:1 D300 3:54s,
1972 Real clean stock Scout II P/S, P/B, 345, T18, 3:73s
1969 Mach I. Balanced ported 351W, 650 double pumper, Super T10, Detroit locker with 4.11s. Lowered with racing springs, bars, Konis etc.
(Don't worry about getting arrested when I drive the Scouts).
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Old 02-14-2018, 08:50 AM   #11
robeastunder
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Default Re: 1973 Open Knuckle Dana 30 Disc Conversion

i appreciate it....
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Old 02-14-2018, 10:06 AM   #12
Hondo
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Default Re: 1973 Open Knuckle Dana 30 Disc Conversion

Another thing I just remembered, the stock drum wheels probably won't clear the calipers.
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1975 Scout II healthy 258, Wide T19 , 4:1 D300 3:54s,
1972 Real clean stock Scout II P/S, P/B, 345, T18, 3:73s
1969 Mach I. Balanced ported 351W, 650 double pumper, Super T10, Detroit locker with 4.11s. Lowered with racing springs, bars, Konis etc.
(Don't worry about getting arrested when I drive the Scouts).
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Old 02-15-2018, 11:48 AM   #13
Scout-It-Out
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Default Re: 1973 Open Knuckle Dana 30 Disc Conversion

i would recommend rebuilding the D44 and then swap it into your rig. stronger axles, larger u joints, disc brakes and no down time.
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1979 Scout II, 304, 3.73, 31" tires, Spartan locker in the rear, Powr-Lok front, Hydraulic Brake Booster, Custom bumpers
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Old 02-15-2018, 01:58 PM   #14
robeastunder
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Default Re: 1973 Open Knuckle Dana 30 Disc Conversion

Quote:
Originally Posted by Scout-It-Out View Post
i would recommend rebuilding the D44 and then swap it into your rig. stronger axles, larger u joints, disc brakes and no down time.
Yep i think that is the way i am going to go, i just need to rip out the 44's i have in my parts rig, clean them up and replace what needs replacing and have a much better system. I appreciate the knowledge and information everyone gave, helped me figure out the best course of action for sure.
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