Transmission & Drivetrain - ring and pinion

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ring and pinion

Printed From: TheAMCForum.com
Category: The Garage
Forum Name: Transmission & Drivetrain
Forum Description: If it's between the engine and wheels, it goes here
URL: https://theamcforum.com/forum/forum_posts.asp?TID=99010
Printed Date: Apr/19/2024 at 9:09pm
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Topic: ring and pinion

Posted By: cone
Subject: ring and pinion
Date Posted: Mar/15/2019 at 10:52am

I need to change the ring and pinion gear on an AMC 20. Any recommendations on what brand to get? I'm looking for the quietest and hopefully made in the US.

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1987 J20, 87 Grand Wagoneer,70AMX,

Replies:

Posted By: tufcj
Date Posted: Mar/15/2019 at 11:33am

I've used Yukon gears with success. Definitely use Ratech for shim kits. They're the only supplier with the correct diameter pinion shims.

If you haven't done a gear setup, definitely study it and make sure you have the right tools. It's not as easy as a bolt in. .005" in adjustment can make the difference between noisy and quiet gears. Someone here made a great video (available on CD) of a Model 20 gear setup procedure.

Bob

tufcj

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69 AMX
74 Javelin AMX
67 Rogue

If you need a tool and don't buy it...
you'll eventually pay for it...
and not have it.
Henry Ford

Posted By: cone
Date Posted: Mar/15/2019 at 11:46am

Thanks, I gave up trying to do it myself, that's how I screwed up the first set. I'm going to take it to a garage nearby that is familiar with AMC 20's.

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1987 J20, 87 Grand Wagoneer,70AMX,

Posted By: Steve_P
Date Posted: Mar/15/2019 at 1:32pm

A while back there was a thread, I think maybe in cheers/jeers, about issues with new R&Ps so definitely search for that before you buy

edit:

http://theamcforum.com/forum/jeers-for-motive-gear_topic95996.html" rel="nofollow - http://theamcforum.com/forum/jeers-for-motive-gear_topic95996.html

Posted By: cone
Date Posted: Mar/15/2019 at 2:23pm

Thanks for posting the thread but now after reading it I don't know what to do. I guess my only option is to buy gears that don't fit right since there is really only one manufacture making them. I wish now I had of swapped it out for a dana or ford axle but I've put too much money into it.

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1987 J20, 87 Grand Wagoneer,70AMX,

Posted By: Trader
Date Posted: Mar/15/2019 at 3:57pm

It really depends on the gear ratio. Jeeps have far more parts but not "highway" gears unless you have overdrive:

https://www.quadratec.com/products/52440_04X_PG.htm" rel="nofollow - https://www.quadratec.com/products/52440_04X_PG.htm

Posted By: cone
Date Posted: Mar/15/2019 at 4:36pm

Your right, it's harder because my ratio is 3.31. Alloy USA doesn't make it.

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1987 J20, 87 Grand Wagoneer,70AMX,