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Old November 30th, 2006, 09:13 PM   #1
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Default d44 and amc20

can i run 37's with lockers and be ok?
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Old November 30th, 2006, 10:15 PM   #2
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On a waggie 20 or a CJ 20?
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Old November 30th, 2006, 10:35 PM   #3
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On a waggie 20 or a CJ 20?
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Old December 2nd, 2006, 02:59 PM   #4
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both are waggy
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Old December 2nd, 2006, 03:05 PM   #5
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XJ man runs that setup in his XJ, 36 inch TSL's locked front and rear with one pieces in the rear, he is kickin ass.
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Old December 2nd, 2006, 03:08 PM   #6
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I am going to try the same axles on my XJ. I heard that there is a 2pc axle in the rear, and that was a weak link, but replaced with a 1pc and should be golden. Someone corect me if I am wrong.
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Old December 2nd, 2006, 03:26 PM   #7
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The FSJ AMC 20 has one peice shafts from the factory.

You would still be better off with a pair of Waggy D44s from a later model.
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Old December 2nd, 2006, 04:11 PM   #8
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I only agree with Cooter due to FSJ C20 shaft availability issues if you break one. Parts axles are cheap, but tough to find.
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Old December 2nd, 2006, 04:18 PM   #9
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I only agree with Cooter due to FSJ C20 shaft availability issues if you break one. Parts axles are cheap, but tough to find.
That, and the fact that the front D44 most likely will be a disconnect D44 if it came from the same rig as the AMC 20.
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Old December 2nd, 2006, 06:54 PM   #10
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good point, maybe ill try and find a d44
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Old December 3rd, 2006, 10:09 PM   #11
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I heard that there is a 2pc axle in the rear, and that was a weak link, but replaced with a 1pc and should be golden.

If someone told you this about some axles they are selling, they either don't know what they are talking about, or its a CJ C20.
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Old December 3rd, 2006, 11:52 PM   #12
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That, and the fact that the front D44 most likely will be a disconnect D44 if it came from the same rig as the AMC 20.
Both rigs my 2 amc20's came out of were an 81, and an 83, both with disconnect d44's.

the stock FSJ amc20 axle has a 1 piece shaft (previously covered)

amc 20 with one piece shafts:
has 1 less spline than a d44
bigger ring gear than a d44
is usually thought to be stronger than a d44 with the exception of the thin tubes (trussing ususally solves this)
gears are easier to setup than a d44 (carrier shims on outside of bearings)

only thing to watch out for is that when dealing with year ranges 81 and 83 (at least in my case) the axle in teh 83 was a bit wider than the 81. the shorter of the two shafts in the 83 was the same length as the longer of the two in the 81 axle.

I'd get them. I run welded in my amc20, and i have had 0 problems to date, after rompin around Moab, Skanee (MI) and various other wheelin around here.
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Old December 4th, 2006, 12:36 AM   #13
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Note - the FSJ C20's have bigger/stronger tubes than the CJ C20's with larger bearings. The whole trussing thing (although still not a bad idea anyway) stemmed from people bending tubes on CJ housings. On CJ's, they are a smaller diameter and not pressed into the diff housing very far.

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Old December 4th, 2006, 08:11 AM   #14
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Originally Posted by PavementPounder View Post
Note - the FSJ C20's have bigger/stronger tubes than the CJ C20's with larger bearings. The whole trussig thing (although still not a bad idea anyway) stemmed from people bending tb on CJ housings. On CJ's, they are a smaller diameter and not pressed into the diff housig very far.
sweet. I guess i really only need a new diff cover then until i do links in the rear

damn i hate the stock ones. almost like tin they are.
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Old December 4th, 2006, 10:59 AM   #15
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Quote:
Originally Posted by xj_man_646 View Post
Both rigs my 2 amc20's came out of were an 81, and an 83, both with disconnect d44's.

the stock FSJ amc20 axle has a 1 piece shaft (previously covered)

amc 20 with one piece shafts:
has 1 less spline than a d44
bigger ring gear than a d44
is usually thought to be stronger than a d44 with the exception of the thin tubes (trussing ususally solves this)
gears are easier to setup than a d44 (carrier shims on outside of bearings)

only thing to watch out for is that when dealing with year ranges 81 and 83 (at least in my case) the axle in teh 83 was a bit wider than the 81. the shorter of the two shafts in the 83 was the same length as the longer of the two in the 81 axle.

I'd get them. I run welded in my amc20, and i have had 0 problems to date, after rompin around Moab, Skanee (MI) and various other wheelin around here.
what size tires are you running?
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Old December 4th, 2006, 01:52 PM   #16
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what size tires are you running?
36 inch grooved TSL's
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Old December 4th, 2006, 09:57 PM   #17
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36 inch grooved TSL's
^
and welded in the rear, and lockright up front.
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