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model 20 answers |
Post Reply | Page <1 7891011 22> |
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1970390amx
AMC Addicted Joined: Jul/11/2008 Location: colorado Status: Offline Points: 3311 |
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http://theamcforum.com/forum/how-to-id-a-twin-grip_topic24607.html This a link to a different thread that has pictures of different carriers. early 70 and older carrier is two piece and is probably the strongest. 71 and newer is one piece and no one likes it, I think its ok. also pictures of an open diff. A torque tube carrier is a two piece and is pretty strong. I have heard that the torque tube carriers are different than non torque tube carriers. They take major changes in the shims to work, not realy a big deal.
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1970 390 4speed Bittersweet shadow mask AMX
1970 Amx missing most everything, or in a box |
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Wrambler
AMC Addicted Joined: Jul/02/2007 Location: West Virginia Status: Offline Points: 4197 |
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Yeah, I see that the ones posted by 390Spirit and billd appear to be 2 piece.
Thanks for the link, it would be nice if the info could be compiled into this sticky. I thought I had read that there was a break in designs on the two piece carriers after 65 or 66? If it stops raining and we get a break I need to open up the one I have and see what kind of shape it is in. Was in the flood/parts car. Supposed to be 3:15 twingrip. Had the wheel housing sticker in the trunk and the correct tag, so should still be in there, somewhere. |
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Wrambler
69 AMC Rambler 4.0L, 5 speed 2015 Grand Cherokee Limited 2019 Chrysler 300 |
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apd6545
AMC Apprentice Joined: Oct/12/2009 Location: Wiscosnin Status: Offline Points: 78 |
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I just want to clarify one point. I have just taken a part a 70 MD Javelin 360 diff which I am refurb-ing. I can tell you that from the factor this diff came with .048 - .050 shims on the right side. Them when setting end play for the axles you shim out the left side.. This seems to be missed in the discussion.
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1970390amx
AMC Addicted Joined: Jul/11/2008 Location: colorado Status: Offline Points: 3311 |
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1970 390 4speed Bittersweet shadow mask AMX
1970 Amx missing most everything, or in a box |
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calereeves
AMC Apprentice Joined: Nov/11/2012 Location: Eagle River, AK Status: Offline Points: 91 |
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I've reinstalled my right side axle, and now I can't get the left side to go in deep enough. I can feel it engage in the splines of the spider gear, but then it bottoms out. I can move the right side axle in and out and it's clearly not touching the left side because it doesn't move at all. I lack about 3/8-1/2 inch in depth to be able to get the bearing race in. Both axles had new bearings pressed in and were definitely seated all the way against the rib on the axle.
What am I doing wrong?? Edit: All I've done is pull the axles and replace the bearings. I haven't touched the center section. Looking down into the tube, I can't see anything that would prevent the axle from sliding in to full depth. I'm at a complete loss here... Edited by calereeves - Jul/27/2013 at 3:21pm |
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1970390amx
AMC Addicted Joined: Jul/11/2008 Location: colorado Status: Offline Points: 3311 |
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The only thing I can think of is that an early two piece carrier has two sets of splines on each side, maybe something slipped causing a missalignment
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1970 390 4speed Bittersweet shadow mask AMX
1970 Amx missing most everything, or in a box |
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68SSTjavelin
AMC Apprentice Joined: May/27/2013 Location: Wyoming Status: Offline Points: 52 |
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This has been an awesome thread. Thank you all for all of the education on the AMC 20 rear end. I am left with a few questions after reading the entire thread. and having never rebuilt a rear end before, some of these questions may come off very newbie-ish. I want to change gear ratio and add twin grip, posi-trac, limited slip, what ever one wants to call it.
1) Where would I get the shims mentioned here. Are these available aftermarket? 2) If I am changing gear ratio, do I need any additional shims sets? 3) Looking at parts available at Jegs, for example, the pro series differential is a 12 bolt. does this mean 12 bolts for the ring gear? If so, looking at these photos, the ring gears depicted only have 8 bolts. Thanks in advance for any updates or added info! |
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It's not the destination, it's the journey!
'68 Javelin SST '06 Impaler custom scooter '11 Harley Street Glide |
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1970390amx
AMC Addicted Joined: Jul/11/2008 Location: colorado Status: Offline Points: 3311 |
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1)Most differential install kits have shims that will work but are different than original. ratech has original type shims available. They also have shim kits that eliminate the crush sleeve.
2)No extra shims if you change ratios 3)You need to look at model 20 parts, they might be listed as AMC or jeep. 12 bolt is a GM type of diff
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1970 390 4speed Bittersweet shadow mask AMX
1970 Amx missing most everything, or in a box |
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68SSTjavelin
AMC Apprentice Joined: May/27/2013 Location: Wyoming Status: Offline Points: 52 |
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Are there no "c" clips? What holds the axles in? surely not just pressed in. What would keep the entire assembly from coming out during usage, the dust cover? |
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It's not the destination, it's the journey!
'68 Javelin SST '06 Impaler custom scooter '11 Harley Street Glide |
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amcamx70ny
Supporter of TheAMCForum Joined: Oct/20/2007 Location: New York Status: Offline Points: 226 |
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I believe the backing plates (for the rear brakes) hold the axles in.
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