AMC 20 Disc Brake Conversion Parts List -
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post #1 of 4 Old 01-26-2010, 07:38 PM Thread Starter
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1978 CJ7 
Join Date: Jan 2009
Location: Richmond, VA
Posts: 292
AMC 20 Disc Brake Conversion Parts List


Been reading through posts getting ready to do a one piece axle upgrade with a rear drum to disc conversion. I think I have the general steps/parts down, but want to make sure I have/get the right parts, and know the right place to get them. I have a 78 CJ with Front Discs.

If I am missing something, let me know

I put the parts I have the most questions about first. To All Readers, Still researching, so use this post with Caution!!

If you are looking for a how to try these-There are lots, but these are pretty good
Jeep Forum Post
Pirate 4x4 Suzuki rotor/nissan caliper/easy rear disk setup (sorry Mo) - Pirate4x4.Com Bulletin Board

Parts List
Proportioning Valve-Disc to Disc
Somebody help me with a source??
Certain Posters have used the original without any issues

Master Cylinder
--Will Stock MC Work?
--Buy from Store
72 Vette
Brake Booster
Somebody help me with a source??

Bearing Preload Ring Spacer--Drum Disc Backing Plate cut down will work
Mounting Braket-Custom Made--Pattern Available Here
Rear?? Caliper Bracket
--Pull from Junk Yard
Nissan Maxima-1996 (Looks like 1995-2001 is the same)
Nissan 300 ZX-1987
--Order on Ebay
REAR CALIPER BRACKET 95 96 97 98 99 00 01 NISSAN MAXIMA : eBay Motors (item 200410826473 end time Dec-26-09 02:01:37 PST)
--Buy from Local Autoparts Store
96 Maxima-Napa Part# BK 6751584 ($26.29)
--Pull From Junk Yard
89-98 Geo Tracker
--Buy From Local Store
Napa Part #-NB 4886008 ($25.49)
Calipers-Match Brackets to make/model
--Pull from Junk Yard (Get These if you can for the Core Charge)
Nissan Maxima-1996
Nissan 300 ZX-1987

Nuts/Bolts (Copied these from another post-don't know the size)
4 grade 8 metric bolts $15
6 grade 8 axle retainer bolts $24
Brake Lines
Stock lines should match up to calipers!

Whats Missing, incorrect, needs to be added? Is there anything in the list that is not needed or you can find in a different place?


Last edited by jpd1899; 01-29-2010 at 04:30 PM.
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post #2 of 4 Old 01-26-2010, 08:52 PM
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1977 CJ7 
Join Date: Nov 2003
Location: Nokomis, Florida
Posts: 726
I believe the metric caliper bracket bolts are 10mm 1.25 Pitch. I cant remember the size I used
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post #3 of 4 Old 01-29-2010, 04:31 PM Thread Starter
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1978 CJ7 
Join Date: Jan 2009
Location: Richmond, VA
Posts: 292
Anybody else want to contribute-Feel free to comment. Trying to make a parts list for everyone else to use!!
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post #4 of 4 Old 01-29-2010, 05:51 PM
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1998 ZJ 
Join Date: Dec 2009
Location: Flint
Posts: 103
I purchased a 79 CJ7 a few months back and it already had a disc brake conversion on it. The original owner used this system. It might help you with your parts list. The rear brakes are from an Cadillac El Dorado I believe

American Motors '66-'83
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