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Unread 06-27-2009, 12:57 PM   #1
trailridin4x4x4
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1981 CJ7 
 
Join Date: Apr 2008
Location: coeurd'alene idaho
Posts: 250
amc 20 trusses let's see them

looking to truss my amc 20 soon, so i'd kinda like to see what everybody has done.....thanks

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Unread 06-27-2009, 01:50 PM   #2
gojeepin
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1983 CJ7 
 
Join Date: Feb 2006
Location: Riverview, Florida
Posts: 3,441
BESRK made mine... I think he makes a You-weld-it kit.
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Vibration? Bump steer? Wandering? Read: Steering, suspension, and driveline basics. An article on how it works and where to look for problems.

83 CJ7, 4.1L 6cyl (4.0L bored .030" over), 35" tires, T-5 transmission, Dana 300 TC, Trussed AMC 20.
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Unread 06-27-2009, 01:58 PM   #3
jeepmor
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Join Date: Nov 2003
Posts: 810
I gutted my old bent tubes and had 3/8 wall DOM tubing installed. I had a shop do it, $500 total, and I brought the rear in gutted of all but the gearing.

I did this as I already had bent tubes. I also have the low gears, detroit locker and warn full floater in it already, so it was cheaper route than a new housing workover. Jeep ran great with 33's, but when I went to 35" tires, they bent after some hard wheeling and my rear wheels were no longer parallel to each other. Looked funny.

If your tubes are bent, I'd gut it as I did. If not, then a brace is a sound investment.
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Unread 06-27-2009, 04:36 PM   #4
trailridin4x4x4
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tubes aren't bent but i want truss it so i don't have that problem just want to know what's out there
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Unread 06-27-2009, 06:32 PM   #5
ken78cj5
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1978 CJ5 
 
Join Date: Nov 2007
Location: Los Angeles
Posts: 78
I used some 2X8 1/8"wall square tube. Used some manila file folders to make the scalloped shape and welded it. I can get ya a pic tomorrow. I would also recommend welding the joint betweent he housing and the tubes. Keeps them from rotating.

Ken
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Unread 06-27-2009, 07:50 PM   #6
trailridin4x4x4
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Location: coeurd'alene idaho
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tubes are already welded to the diff by the previous owner
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Unread 06-27-2009, 07:56 PM   #7
berserker
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1986 CJ7 
 
Join Date: Mar 2009
Location: Spokane, WA
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Check out this thread for some ideas: http://www.jeepforum.com/forum/showt...+20+axle+truss
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Unread 06-27-2009, 08:04 PM   #8
trailridin4x4x4
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cool thanks erik
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Unread 06-28-2009, 07:35 AM   #9
gojeepin
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1983 CJ7 
 
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Location: Riverview, Florida
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The link provided by berserker above includes my axle as it was being built... Here's the completed axle.

__________________
Vibration? Bump steer? Wandering? Read: Steering, suspension, and driveline basics. An article on how it works and where to look for problems.

83 CJ7, 4.1L 6cyl (4.0L bored .030" over), 35" tires, T-5 transmission, Dana 300 TC, Trussed AMC 20.
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