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post #1 of (permalink) Old 02-29-2004, 01:53 PM Thread Starter
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CJ5 disk brake and tranny swap questions

my jeep is a 74,258, t-14, dana 20, all that. i was wanting to swap out my old icky brakes for disks. was wondering if yall had any tips or advice for me. i havnt bought any
parts yet, but ive researched a bit. ive seen that
what i want was put on jeeps from 79 to 86. (dont want the
expensive big brakes)
im also in the market for a transmission. mine(T-14) is worn out and dying. its currently not IN the jeep, i figure i should fix it before i put it back in. in truth, on a few things are broken in it, but they would add up to be fairly
expensive, so ive been hoping to find a old neglected
partsjeep off in the woods somewhere. ive come to the
decision, after 6 months of searching, that those dont
exist. funny that its easier to find 57 chevys rusting
away than jeeps.
anyway, figured i might post this in the hopes of avoiding any future problems stemming from me buying the wrong parts/ trannys, or buying from the wrong people.
any help would be appreciated thanks guys
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post #2 of (permalink) Old 02-29-2004, 02:06 PM
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Re: CJ5 disk brake and tranny swap questions

I'm in the process of getting everything together to do the disc swap on the front on my '74 also. I got the caliper brackets from one of the guys on this BBS (thanks RocknCJ) and now i'm trying to get the rest of the parts rounded up (including some old calipers to use as cores). Most of the auto parts places have everything you'll need at what I consider a "not to bad" price. Also, 4WD Hardware (I think) has everything needed. The only items I couldn't find anywhere were the caliper brackets.
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post #3 of (permalink) Old 02-29-2004, 08:40 PM
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Re: CJ5 disk brake and tranny swap questions

If you can find an old rusty Jeep, 76 or older (I Think), you should be able to swap the entire narrow track D30 with discs without too much trouble. Gear ratio would be a problem, and if they don't match, setup is $$ unless you have a friend with know how and tools. Also you may find that the same Jeep has a T150 Dana20 combo, which are strong and would swap in fairly easily.

Most seem to be trying to get away from the narrow track axles and the 3speed. Should be cheap if you can find them. Look for other jeeps that have upgraded and start asking questions.

Or search SM465, this tranny with a NP205 could work for you, but may have length issues with your 5. If not, any older GM 4x4 is a good place to look. [img]images/graemlins/grin.gif[/img]
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post #4 of (permalink) Old 03-05-2004, 12:12 PM
 
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Re: CJ5 disk brake and tranny swap questions

Ecamp
You will run into a problem trying to put the calipers on the 74 knuckes. The calipers will hit the knuckles. I ran into this when I did my 76 drum to 76 Big disk. I dont know if this will be an issue if you are using the 79 up disk/calipers. They are smaller. for the 76-78 Fat disk/caliper you can either find a set of disk knuckles or cut or machine a small area out of the knuckle for clearance. Being the cheap bastard that I am I cut and ground the knuckle.
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post #5 of (permalink) Old 03-05-2004, 01:15 PM
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Re: CJ5 disk brake and tranny swap questions

As did I ...

D30 drums to discs ("big brake" setup)

BTW, Pigpen was a major tech contributor when I did the swap! [img]images/graemlins/40BEER.gif[/img]
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post #6 of (permalink) Old 03-05-2004, 01:36 PM
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Re: CJ5 disk brake and tranny swap questions

Grinding/machining is not a problem since the guy across the street is a machinist and has a big shop behing his house..... I'm a cheap bastard too, Pigpen. I was using your write-up as an example Dave...lol. The only question that I haven't found a definative answer on is: can I use the drum brake spindles (hubs), or do I need to replace those too?

Thanks alot guys.
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post #7 of (permalink) Old 03-05-2004, 01:58 PM
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Re: CJ5 disk brake and tranny swap questions

You want need a machinist! Just a cheap angle grinder and a sharpie! [img]images/graemlins/grin.gif[/img]
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