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Unread 03-17-2009, 09:56 AM   #1
cadesertjp
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1984 CJ7 
 
Join Date: Mar 2009
Location: va.
Posts: 37
Model 20 drums to disc. conversion

I'd like to change out my drums brakes and install disc.brakes. I have a wide track model 20 is there any sites I can go to or has anyone done tackled this project ?

Chris

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Unread 03-17-2009, 10:16 AM   #2
BioTex
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2006 TJ Wrangler 
 
Join Date: May 2008
Location: Alpine, Tx.
Posts: 3,173
Try earlyCJ5.com also there are others, but start there.
__________________
'85 CJ7, BDS 4" lift, 1" Body lift, 33x12.5, Shrockworks Sliders, 304 V8 with RV cam., T-176, D300, Dana 30, AMC 20.
1986 CJ10-A SD-33 Diesel/727/np208
1971 800B with 345/T-19
06' TJ Rubicon, 4" R.C. springs, BFG/AT 35s M.C. 6" fenders, rockers and surrounds, Currie front & rear adj. tracbars, tattons DC rear shaft, adj. upper - lower CA's. Bilstein 5100's
YJ Buggy Build Current project. Stroker/FI ?
1990 MJ Comanche 4.0L AX15/np231
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Unread 03-17-2009, 10:40 AM   #3
LazarusCJ7
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1980 CJ7 
 
Join Date: Jan 2009
Location: Arkansas
Posts: 72
I am currently doing a disc conversion on my narrow axle Model 20. (80 CJ7). I have all the components and will be documenting this on my site (see sig). Please note I am doing a frame up re-build, so it might be a while before the brakes are road tested. However, I will be able to comment on the fitment and availability of the parts. I was able to find rear calipers from a Nissan 300ZX at my local pick and pull. For both calipers with all brackets, bolts, soft lines, and pretty good shoes (although I will put on new shoes) put me back $32 after core and environmental charges. I picked up brand new rotors (96 Geo Tracker front rotors 2-dr) from AZ for $23/each and built the conversion brakets from 3/8 plate I got from my local scrap yard ($8). The superior 1-pc Axles should be here today. I powder coated the brackets and cleaned and painted the calipers with ceramic caliper paint. I will have an update on how everything fits together with pictures in a few days....

300ZX calipers.....$32
Geo Rotors..........$46
Scrap plate.........$ 8
Caliper paint........$ 7

Working on
my jeep..............$ Priceless
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Gary

My Build Page...
http://www.fosternet.org
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Unread 03-17-2009, 10:52 AM   #4
LazarusCJ7
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1980 CJ7 
 
Join Date: Jan 2009
Location: Arkansas
Posts: 72
Also, some links I have used to get info....

http://www.pirate4x4.com/forum/showt...=nissan+suzuki

http://www.abeenterprises.com/files/...ke-Bracket.pdf

Note: if you print this PDF with your printer set with no options set to resize...ie (do not fit to page), it will print 1:1 to the drawing...meaning you can print, then cut these out for templates. to be sure yours is printing correctly, measure the brake line holder it should be exactly 4" long and 1" wide on the paper.

I built my brackets by using a simple cutting torch and drill press and was able to get everything to fit with just a little grinding.

http://www.jeepforum.com/forum/f8/cj-rear-amc-20-disc-brakes-536617-post5184696/

Also note, there is some confusion on which year models for the 300ZX will fit. Mine was from a 86, but I read that 84-89 are the same dimensions.

anyone have additional information???
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Unread 03-17-2009, 11:03 AM   #5
BioTex
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2006 TJ Wrangler 
 
Join Date: May 2008
Location: Alpine, Tx.
Posts: 3,173
My above web address was for a dana 25/27. sorry I did not catch that before.
__________________
'85 CJ7, BDS 4" lift, 1" Body lift, 33x12.5, Shrockworks Sliders, 304 V8 with RV cam., T-176, D300, Dana 30, AMC 20.
1986 CJ10-A SD-33 Diesel/727/np208
1971 800B with 345/T-19
06' TJ Rubicon, 4" R.C. springs, BFG/AT 35s M.C. 6" fenders, rockers and surrounds, Currie front & rear adj. tracbars, tattons DC rear shaft, adj. upper - lower CA's. Bilstein 5100's
YJ Buggy Build Current project. Stroker/FI ?
1990 MJ Comanche 4.0L AX15/np231
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Unread 03-17-2009, 12:03 PM   #6
foggybottombob
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1984 CJ7 
 
Join Date: May 2008
Location: Monument Colorado
Posts: 5,833
A local machinist here in town made some 300ZX caliper brackets for me. I got a set for an XJ D44 and a scout D44. The machinist also had a set he made for himself to fit his CJ AMC20. He is thinking about making these and selling them on ebay but has not started yet.

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Unread 04-28-2009, 09:13 AM   #7
Hybrid AWD
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Posts: 21
These are slick!
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