AMC 20 Tear-Down | Rebuild Part 1 | Jeep CJ7 | Project Rowdy Ep041
HTML-код
- Опубликовано: 12 сен 2024
- In this video, I will be rebuilding an AMC 20 Narrow Track Rear Axle. This is Part 1 that is primarily the teardown of the axle components.
This series will be available in a unique RUclips Playlist and will include the following upgrades:
- Weld the Axle tubes to the Differential Housing (strength)
- Eaton TrueTrac LSD Differential upgrade amzn.to/3O2eSv1
- Moser 1-piece Axle Kit upgrade (strength) www.summitraci...
- Motive Gear Ring and Pinion re-Gear from 3.54 to to 3.73 amzn.to/37IGrsM
- Extra Pinion Shims: amzn.to/3vuyose
- Extra Differential Side Bearing Large Shims: amzn.to/3zLT0Ph
- Drum to Disc Brake Conversion
- All new Bearings and Seals amzn.to/3uBzpiQ
- Clean and Paint the Housing
All of this is being done to prepare this axle to be reinstalled in my 1979 Jeep CJ7 which is slated to for an LS LM7 5.3L Engine swap.
Project Rowdy is a restoration on a 1979 Jeep CJ7 V8 Golden Eagle.
Project Rowdy Playlist: www.youtube.co....
UCanDoIt2 Contact: UCanDoIt2Mike@gmail.com
JeepForum Thread: www.jeepforum.c....
Facebook Page: / projectrowdy
Music
Intro: Alex Skrindo (Alive)
#jeep #jeepcj #lsswap #lsswaptheworld #lsswapc10 #lsswapc10 #diyperformance
Hey man! Hopefully this comment finds you well! I've watched these videos religiously over the last few weeks. I am doing the exact build on my 77cj7. AMAZING content. I cant thank you enough for walking me through everything.
Great to hear the you are also reviving one of these great vehicles. I have owned my for about 34 years. Time for a restoration. Glad you found the channel and have enjoyed the content. maybe we can figure this stuff out together Cheers and have with yours Mike
I’m glade too see some more videos on the Jeep! Axle work is always fun to watch. I always enjoy your content!
Thank you. Planning to be back on that axle next week. Work has pulled me away again. Cheers! Mike.
Another great video. I watched the series on the 5.3 rebuild over and over, took a lot of notes, and was able to rebuild mine with confidence.
Love it! Seeing all of the steps can really help many people build the confidence they need to give it a try. Congrats on yours! Mike
Great videos! Tune in every time I dive into repairs on my '84...
Gotta love these ole CJs! Cheers! Mike
always enjoy watching your videos. I'm hammering ahead on my 37 with the LT1 swap. Some days it's 2 steps forward and one back. I had purchased a trans mount and center section for the frame. Before I welded the first tube in, I started checking and the upper tube interferes with the trans. The solution is a different trans mount that moves the tubes back a few inches. The part Is coming, and may I say, Most outstanding service from Paul Horton in Canada. When I sent him pictures he apologized and said he was sending the mount I need at no charge. I offered to pay for it as it was as much my mistake. The other challenge is finding radiator hoses. I found a source in CA that makes a hose up using various silicone elbows and sections of aluminum tubing. Not cheap but there was no way I would have found a hose I could have used.
Glad you enjoy the videos. They are fun to create and a great way for me to document what I am doing and share with such a great community. Best of luck with your project. Sounds like when you finally get the correct parts, you can motor forward. Cheers! Mike
Hey I’m glad your back, your my favorite RUclipsr !!
I really appreciate that. Glad you like to following along! My current work schedule is pulling me away again, but I’m purchasing parts and prepping my next steps on this axle and the front. Big cheers to you Danny! Mike.
@@UCanDoIt2Mike yeah man, I been following you for a couple years , I’ve binged watch your project Rowdy, and I’ve learned a lot from ya, I know how that work schedule goes , I live in West Virginia, and I’m a coal miner, , anyway thank you so much for sharing the knowledge!! And absolutely you do great work, I appreciate you, I’m in the process of doing a LA SWAP on my 97 TJ,
Awesome. Hope you enjoy your project. Kind of fun when you get your hands dirty. Cheers…. Mike!
I put the Moser axles in my 80 CJ-7 Renegade about 30 years ago after spinning the splines on one stock axle. Other than seals and upgrading from ball bearings to tapered roller bearings, I haven't had a problem with the diff since. That doesn't look like a Trac Loc diff, which surprises me since the Golden Eagle is considered an upgrade from the Renegade and I have one in mine. I'm going to pulling mine apart later in the year, it's got 250k on it and I'm sure the clutches are dead and it needs new bearings.
Interesting! Mine is an Open Diff. If I could find a Trac-Lok quickly cheap, I wouljd love the added limited slip. And now that I am this far, I am looking into possibly re-gearing. Let the research begin!!!! Cheers! Mike
As always, amazing video Mike ! It’s a good thing you checked those bearings.
I was really hoping that they were good so that I could just throw it back together to take me through the next couple of years. I am very glad I checked. Cheers! Mike
Hope your health is good man! haven't seen you in a hot minute! good to see you're back.
I’m doing Ok, but work has me pulled away again. Cheers to you! Mike
Glad to see you back on the jeep. I have a AMC 20 in my 83, but I already acquired a Dana 44 for it. It was suck a good deal, I would of spent more upgrading the AMC 20
Exactly! I was hoping to get my AMC 20 running for a reasonable price (Seals, Axles), but now I'm up to my shoulders. Like you, I believe the future is a Dana 44 for me as well.
Thank you for watching....
A list of parts and tools that I used during the rebuild of this AMC 20 Axles is listed on my Amazon Associates Store: www.amazon.com/shop/influencer-8c6a35f2
I believe the pinion bearing preload is only applicable to installation. After running for a while, the bearings seat better and wear-in causing most of the initial preload to go away. Just my two cents.
I think your logic is mostly accurate in that there is a short break in period where everything settles in. But I believe that there is a need for preload during normal operations. The initial preload takes in account that there will be some settling. After a year of running the setup, you would not want zero or any clearance. The slop would certainly prematurely wear them out. Cheers. Mike
@@UCanDoIt2Mike Agreed. I just didn't want folks to think if they don't have the preload on the chart that their pinions were toast.
Great videos.
Sorry, had to laugh when you hit the camera! LOL!
Sometimes these low budget films have their moments. At least this time the camera didn’t fall over. I’m on my third camera mounted Microphone. Thank you for watching. Cheers. Mike.
Got my spartan lunchbox lockers for my dana 35. Going to start installing them and a tad nervous. Watched a lot of videos so I should be good. I only do light trails so I don’t see the dana 35 breaking. Good video for I will be checking out my brakes as well. Got a 2000 TJ
That lunchbox should be a good option for you. I would really like a limited slip for mine, but I just don't want to spend that kind of money on it. Cheers! Mike
I put an 8.8 in my YJ with 4.88 gearing. I loved it, plus it comes with disc brakes.
This AMC 20 is an 8.875, so it should be relatively equivalent to yours. Assuming that your YJ has the AX15 transmission.... I would be interest in what your RPMs are at 70MPH with the 4.88 gears. I haven't completed the Brakes on this unit, but am still leaning towards sticking with the Drums... This would be a good time to change over though. Cheers to you Bart!
Just noticed your Thumbnail. My son, Spencer is a flight instructor with 1000+ hours and just received his contingency job offer with Endeavor Airlines. I believe his current credentials are CFI, CFII, MEI, High'Power endorsement. He loves it!
@@UCanDoIt2Mike, tell I said "Congrats." I'm currently putting a new interior in my 172, then it's going up for sale. I think it's time to start a Willys project.
@@UCanDoIt2Mike, AX15, 4.88s and was running 37" tires. I was easily cruising the freeways at 75 mph, and rpm in the normal range. I gave the YJ to my son years ago, and he ended up selling it a few years later, so I don't remember the exact rpm number. Sorry.
Mike, as always great video.
I really appreciate the support and feedback! Cheers to you Chris! Mike
the 8.8 axle is a great upgrade. u can find them with 4.10 gears and stock locker.
Thanks. Any specific vehicle that you would recommend getting the 8.8 from that would fit the CJ?
Mike.........my build is pretty much identical to yours....LS, AX15, etc.....you're using a different transfer case, but more or less the same. Yes, eventually the 8.8 Ford is more or less a "drop in" upgrade (spring perch change) with rear discs (thanks for the mention btw). I have two housings now & a 3rd coming if I want it....all limited slip. The 4:10 is what I need but I can re-gear them easy enough if need be. Like I mentioned, the 8.8 is only slightly narrower (1-1 1/2") than the standard YJ and TJ axles I believe.......not sure on the CJ without looking.
I've been a welder all my life (started with stick back in the late 60's lol).....don't be afraid of welding those axle tubes. Preheat the casting in the area of the weld after you clean it (350-400 degrees) and weld in an opposing pattern of 1-2 inch increments.....first one weld, then another 180 degrees opposite until you've completed the circumference.....keeping the axle hot. Focus 60-70% of your weld time on the housing making "sweeps" down onto the tubes in a weave pattern. (the tubes are obviously much thinner). Wrap the finished welded axle in a heat blanket when done and let it cool as slowly as you can. I built a jig on the last axle I did with a long piece of 3/4 threaded rod to keep tension & straightness on the tubes......worked great. Here's a link I found after I posted this ruclips.net/video/ZpjScr6Nfg8/видео.html
Yeah... The CJ Narrow Tracks are 50.5" wheel surface to suffice, roughly 4" narrower than the Wide Track (54.5"). Your YJ/TJs are 60". The Key to that is I cannot just upgrade the Rear Axle.... The Front will need to be upgraded as well. While the 8.8 and Dana44 are great upgrades to the YJ/TJs, it is more involved with the CJs. All of that is definitely on my list to research further after I get this guy back on the road. However, after release this video, I also thought that I might consider new gears on this axle since I am forced to do a fully setup on it. I found a calculator that suggested 3.73 with 33" Tires and 2100RPMs at 70MPH. I also found a chart that suggested wither 3.73 or 4.10 to match the Engine/Trans combo. I am a little new to this part and need to investigate the limits of my carrier. If my elbow are already dirty, why not go into my shoulders!
Thanks for the info on Welding the Tubes to the Housing, I will check out that video and probably will do it. I have the tools and with the proper instructions feel confident that I can do it. Cheers! Mike
Good thing you checked the bearings. I wonder if they pitted from it sitting so long in one place outside and those spots were on the bottom? You wouldn't think moisture could get in there but who know?
I was just talking to a guy and was thinking the same thing. It did site for a while. Doesn't appear to be from wear as it is just in the one spot. Cheers!
Like the video. Is there a part 2?
Yes. The real job has consumed my free time. Will be back in it next week. Cheers and thanks for following along. My plans have changed since finding the scored bearing races. I’m going in deeper.
Want a pair of wide tracks? Shipping would probably be prohibitive haha
I probably am in the market. I need to do some research, but with the CJs the Front Pumpkin needs to be on the Passenger side. So a Wide Track Dana 30 would be the simplest solution there. For the rear, it will either be the Wide AMC20 with some upgrade, Ford 8.8, or Dana 44. How far are you from Atlanta? I do have a few Jeep Salvage guys in the area, and have not really thought to ask them for axles as I had planned to do that down the road. Always open for options. Cheers Mike
@@UCanDoIt2Mike Far. I am up in New Hampshire. I picked up a rolling chassis for the frame (be glad you don’t have the salt we do), long story short I’ll have a spare set of wide track CJ7 axles. 8.8 is a good option as is the D44.
I believe I just dug one of these up sure its been buried 30+yrs entire thing was covered
I've seen people rebuild them starting with one covered in thick rust. One step at a time! Cheers.. Mike
ok i thought someone other than the factory did the t-40's with locktite. why amc ? why ?
Between that and all the grime that collects in the socket, they can be a booger to take off.
What camera do you use for your videos?
A Canon 7D with external mic. It does great for when I place it on a tripod (95% of the time). I don’t like using it in hand panning around. The video show too much shake. I really do like it otherwise. Cheers. Mike.
Pinion bearing and races most likely look the same.
Probably right! They have been subjected to the same conditions as the carrier bearings, so out, they will come. Cheers! Mike
Interesting fact some AMC 20 axle don’t have seals at the end! If you have seals you grease the bearings! If you have no seal The 90 weight oil lubricates them!
Very interesting! The new Moser Axle kit comes with new seals. I assume regardless of whether your current setup includes them.... Moser's configuration prefers and requires them. Cheers!
hey friend i have a question my jeep wrangler tj 2.5 2001 my reverse broke I have an ax5 transmission I can put an ax15 without any problem I appreciate it if you answer

I am not as familiar with that swap. Those transmissions are very similar. I believe if the overall length is the same… it would be a direct swap. I know that AX15s come in several length and input/output shaft specs. You need to determine exactly what you have and then check the AX15 for shafts , mounting surfaces (should be the same), and length.
@@UCanDoIt2Mike another question the gears of the transmission takes time if so what is it to assemble it

😁👍
Thanks for watching!