early CJ5 Brake upgrade. - JeepForum.com
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post #1 of 16 Old 01-08-2015, 08:50 PM Thread Starter
robbor
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early CJ5 Brake upgrade.

Im about to tear into my 66 cj5. The master cylinder was dry so before i spend any money on getting the drums working i was wondering what upgrades are avail to get better braking??? Any easy disc conversions? Im trying to stay with 15" wheels.

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post #2 of 16 Old 01-08-2015, 08:55 PM
Stumpfarming
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I'm in the middle of doing a GM brake conversion on a Dana 30. Uses front disk brakes from a half ton Chevy. I haven't posted on the thread in about 2 weeks, but when I finish I will post a complete list of parts I used.

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post #3 of 16 Old 01-08-2015, 09:22 PM Thread Starter
robbor
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Ya was just searching and found an article. The part i dont like was grinding on the axle housing.
Im still wondering about a master cylinder upgrade to. Saw one with i think a VW cylinder.
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post #4 of 16 Old 01-08-2015, 09:42 PM
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Quote:
Originally Posted by robbor
Ya was just searching and found an article. The part i dont like was grinding on the axle housing. Im still wondering about a master cylinder upgrade to. Saw one with i think a VW cylinder.
Grinding on the axle housing? You might need to grind a bit on the knuckle, but not much. The back of the hub housing will need to be machined. That cost me about $85 to have both done. The greatest challenge for me was to determine specs for parts I needed for the upgrade. I can assemble a list if you're interested.

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post #5 of 16 Old 01-08-2015, 09:53 PM
Tom Hartz
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Call Herm. He is a great guy with great parts for early CJs. Take a look at the link. http://hermtheoverdriveguy.com/?page_id=809
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post #6 of 16 Old 01-08-2015, 10:00 PM
John N
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Long ago, when I had a '66, I put in newer (think '80's CJ) swinging pedal setup with the newer duel master cylinder. I changed over the clutch linkage, too, to get rid of the cable setup. It worked way better.

'81 Scrambler w/ FI 360 AMC, 33x12.50 BFG M/T's, 5" of lift, ARB'd Dana 44's F & R, Dana 300 clocked & twin sticked w/4:1, Warn XD9000i, etc...
2002 Grand Cherokee Limited, 2008 Overland Grand Cherokee, a 1976 CJ-7 in pieces and 3 more off-brand 4x4s...............
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post #7 of 16 Old 01-08-2015, 10:05 PM
zillla
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I happen to have a set of front 11" drums, etc off my 75.. Installing discs and doing an axle swap..

Pull my finger
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post #8 of 16 Old 01-08-2015, 10:09 PM
Tom Hartz
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My 67 has 11" drums front and rear and it stops great. Now if you are in deep water discs would be better.
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post #9 of 16 Old 01-08-2015, 10:56 PM
dg6772
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Quote:
Originally Posted by Stumpfarming View Post
I'm in the middle of doing a GM brake conversion on a Dana 30. Uses front disk brakes from a half ton Chevy. I haven't posted on the thread in about 2 weeks, but when I finish I will post a complete list of parts I used.
Actually, you just use the caliper mount and caliper for a Chevy 1/2 ton. The rotors will be early CJ disc, possibly Ford truck.

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post #10 of 16 Old 01-08-2015, 11:53 PM
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Quote:
Originally Posted by dg6772
Actually, you just use the caliper mount and caliper for a Chevy 1/2 ton. The rotors will be early CJ disc, possibly Ford truck. Dave in Muskegon using JeepForum app
Thanks for the point of clarification Dave. You know I know better. :-)

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post #11 of 16 Old 01-08-2015, 11:59 PM
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Lol... Just trying to avoid possible confusion.

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post #12 of 16 Old 01-09-2015, 07:42 AM
hotrod351
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i also have the 11" front only and i stop fine. i did a disc brake conversion on a 72 bronco so i could use the drum setup form it to put on the back of my 55 jeep but its not worth the work.
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post #13 of 16 Old 01-16-2015, 05:33 AM
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Quote:
Originally Posted by dg6772 View Post
Actually, you just use the caliper mount and caliper for a Chevy 1/2 ton. The rotors will be early CJ disc, possibly Ford truck.

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I had heard about using 3/4 ton calipers on the stock mounts. Got a set for a '78 K20 and the mounting holes are too far apart. So would these work if I got the 3/4 ton mounting brackets? Or should I go with all 1/2 ton? (1983 Dana 30)

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post #14 of 16 Old 01-16-2015, 07:13 AM
dg6772
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3/4 ton mounts will not allow you to use 15" rims without a special offset. I found this out while doing my upgrade. Turned out 3 of my mine were 1/2 ton 1 was 3/4. 1/2 ton will allow you to use stock wheels. I'd stick with those.

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post #15 of 16 Old 01-16-2015, 07:22 AM
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Vut i need the mounts as well as the calipers?

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