AMC 20 gear set up (problems) - Pirate4x4.Com : 4x4 and Off-Road Forum
 
Pirate4x4.Com : 4x4 and Off-Road Forum  

Go Back   Pirate4x4.Com : 4x4 and Off-Road Forum > Brand Specific Tech > Jeep - Hardcore Tech
Notices

Reply
 
Share Thread Tools Display Modes
Old 02-15-2004, 03:38 PM   #1 (permalink)
Granite Guru
 
shaka 55's Avatar
 
Join Date: Feb 2003
Member # 17224
Location: Lake Tapps, WA
Posts: 588
AMC 20 gear set up (problems)

alright heres the deal. We are putting a 80' FS cherokee axles under my buddies 94' YJ.

The rear is a amc 20 and we are putting in 4.88's .

Here is the problem:

got the new pinion gear in and used the stock shim to get it close(we thought) and them set the carrier in with the stock shims it used to get it close( we thought)

The teeth barely mesh togather I shimmed it all the way over to engauge the gears farther but they are still only engauging about half way.?

I don't see what we are doing wrong.

here is what questions I have:

1) Does the Cherokee amc 20 take a different gear set then the amc 20 in a cj?

2) Will this carrier accept 4.88's ( we pulled 2.73's out, wered part is they were 41/15 R&P and a drivetrain website said they would be 30/11?)

3) if this gear ratio doesn't work in this housing because it came with a numerically too high of a gear, Does someone make a ring gear spacer to make it work (similar to the Dana 61 problem)?

ANY help would be great!
__________________
85 EFI 4runner
69 fj-55,76 fj-55
96 Taco
08 F-350
shaka 55 is offline   Reply With Quote Quick reply to this message
Old 02-15-2004, 03:59 PM   #2 (permalink)
Registered User
 
Join Date: Sep 2001
Member # 7163
Location: PA
Posts: 1,559
Re: AMC 20 gear set up (problems)

Quote:
Originally posted by shaka 55
2) Will this carrier accept 4.88's ( we pulled 2.73's out, wered part is they were 41/15 R&P and a drivetrain website said they would be 30/11?)
Quote:
Randy's Website
M20 2.73 & down / 3.07 & up
Oxjockey is offline   Reply With Quote Quick reply to this message
Sponsored Links
Old 02-15-2004, 04:13 PM   #3 (permalink)
Granite Guru
 
shaka 55's Avatar
 
Join Date: Feb 2003
Member # 17224
Location: Lake Tapps, WA
Posts: 588
ANyone have any real information

Thanks for looking up what I already know

What I want to find out is why my gear count are so far off and if you can make these gesrs work with a ring gear spacer. (again, like the DANA 61)

NOW, would someone chime in that accual has some first hand experience.

Jesus Christ I'm not a newbie
__________________
85 EFI 4runner
69 fj-55,76 fj-55
96 Taco
08 F-350
shaka 55 is offline   Reply With Quote Quick reply to this message
Old 02-15-2004, 04:39 PM   #4 (permalink)
Registered User
 
greasyjeep's Avatar
 
Join Date: Dec 2002
Member # 15997
Location: Central NewJersey
Posts: 523
Send a message via AIM to greasyjeep
I think he did answer one of your questions.
the carrier won't work, the break was at 2.73/3.07.
Is there a spacer out ther, not sure, but it may be cheaper/easier to find a carrier for 3.07 ^.
I am pertty sure (95%) that an AMC 20 is an AMC 20 and it doesn't care what it came under.
You can go post a wanted add at IFSJA for a carrier and probably get a good response. Those guys are very responsive and have lots of stuff like that laying around.
__________________
josh
[URL=http://www.simbur.com/toyota4runner.htm]4runner[/URL]
greasyjeep is offline   Reply With Quote Quick reply to this message
Old 02-15-2004, 05:20 PM   #5 (permalink)
Registered User
 
Join Date: Sep 2001
Member # 7163
Location: PA
Posts: 1,559
Quote:
Originally posted by shaka 55
ANyone have any real information

Thanks for looking up what I already know

What I want to find out is why my gear count are so far off and if you can make these gesrs work with a ring gear spacer. (again, like the DANA 61)

NOW, would someone chime in that accual has some first hand experience.

Jesus Christ I'm not a newbie


I have setup these diffs, and did not have to come on here asking if the carrier I was using was the one I needed. How much more first hand experience do you need?

If you know so well, why did you ask? I wouldn't use a spacer, I'd use a thicker gearset if it's available...but you'd might want to ask someone who actually knows.
Oxjockey is offline   Reply With Quote Quick reply to this message
Old 02-15-2004, 05:26 PM   #6 (permalink)
Registered User
 
HybridPOS's Avatar
 
Join Date: Oct 2002
Member # 14442
Location: Arlington, TX
Posts: 905
Send a message via Yahoo to HybridPOS
you need a new carrier, the correct one for that gearset.... Brainiac.

The Waggy and CJ housings are the same, only difference is the tubes and axles.
__________________
83 CJ-7, 360 .030 over, shaved heads on the pane.
105 inches of noise and booger welds.
HybridPOS is offline   Reply With Quote Quick reply to this message
Old 02-15-2004, 05:30 PM   #7 (permalink)
Registered User
 
Join Date: Apr 2003
Member # 18842
Location: Tennessee
Posts: 239
Get a full locker or a new carrier.
__________________
But why is the rum gone?!?

[QUOTE=Supergper] you need to do some destructive testing to see how well you really penetrated[/QUOTE]
Rescue35 is offline   Reply With Quote Quick reply to this message
Old 02-15-2004, 05:36 PM   #8 (permalink)
Registered User
 
Join Date: Jun 2003
Member # 20092
Location: Porker, CO
Posts: 3,468
You definitely need a different carrier. The 2.73s used a unique carrier, while all the other gears used a different carrier.

Ask me how I know
__________________
'94 Toyota Land Cruiser FJZ80 - Vortec L33 5.3l, 4L60e, elocked, 3" OME lift, 315 KM2s, Warn 8074.
rock-rod is offline   Reply With Quote Quick reply to this message
Old 02-15-2004, 05:38 PM   #9 (permalink)
Registered User
 
Join Date: Jun 2002
Member # 12491
Location: North Georgia
Posts: 200
I've got a stock AMC20 carrier I pulled out to put in detroits. Originally was a 13:43 gearset (3.31 ratio). It's the carrier size you need, stock open gears, never had a locker in it.

I could strip it down and sell it to you, but shipping might suck, try to find one closer first.

CP
CP8071 is offline   Reply With Quote Quick reply to this message
Old 02-15-2004, 06:34 PM   #10 (permalink)
Registered User
 
Join Date: Jan 2003
Member # 16362
Location: Central Coast
Posts: 75
I have a factory posi you can have cheap if you want to drive down and get it. The AMC 20,s are a pain because they only have 3 shims. I was working on one today, and the Superior gear install sets do not have enough shims ( how the f you going to put a factory .095 in the mix!). You can get clutch pack and shim pack cheap from Randy's
__________________
86 CJ7, OX's/4:56, 4:1, RE Extreme, MORE SR, Howell FI, Just Empty Every Pocket.
jessejeep is offline   Reply With Quote Quick reply to this message
Old 02-15-2004, 08:53 PM   #11 (permalink)
Registered User
 
JeepinIan's Avatar
 
Join Date: Dec 2000
Member # 2510
Location: Miami, Fl
Posts: 1,100
I had a 1/4" spacer made for the AMC 20 in the rear of my CJ when I went to 4.10's. Works great
__________________
[url=http://www.jeeptalk.net/]Florida Jeep Forum[/url]

It is much easier to suggest solutions when you don't know too much about the problem.
- Malcolm Forbes

"I've been accused of vulgarity. I say that's bullshit." ---Mel Brooks
JeepinIan is offline   Reply With Quote Quick reply to this message
Old 02-17-2004, 10:45 AM   #12 (permalink)
Granite Guru
 
shaka 55's Avatar
 
Join Date: Feb 2003
Member # 17224
Location: Lake Tapps, WA
Posts: 588
Quote:
Originally posted by JeepinIan
I had a 1/4" spacer made for the AMC 20 in the rear of my CJ when I went to 4.10's. Works great
Is that a ring gear spacer your talken about? Give me some more info on this.


Also, sorry Ox jockey! I shouldn't have flew off the handle but I was a little when I set the gears up in the housing and found out they didn't even mesh. I was really mad because it's my buddies axle and he didn't do the research to figure this shit out before giving me the axle to regear I had never seen a pinion gear that big before

Anyway, I apriciate the help from you guys and this is all good info. If I can't find a carrier all let you guys that posted know.
__________________
85 EFI 4runner
69 fj-55,76 fj-55
96 Taco
08 F-350
shaka 55 is offline   Reply With Quote Quick reply to this message
Old 02-17-2004, 01:25 PM   #13 (permalink)
Registered User
 
JeepinIan's Avatar
 
Join Date: Dec 2000
Member # 2510
Location: Miami, Fl
Posts: 1,100
Yeah, I had one made that went between the ring gear & the carrier.
That was 7 or 8 years ago, w/ a lockrite in it, and no problems yet w/ the set up. I still run it on the street. My problem is abent tube!
__________________
[url=http://www.jeeptalk.net/]Florida Jeep Forum[/url]

It is much easier to suggest solutions when you don't know too much about the problem.
- Malcolm Forbes

"I've been accused of vulgarity. I say that's bullshit." ---Mel Brooks
JeepinIan is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Pirate4x4.Com : 4x4 and Off-Road Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.

** A VERIFICATION EMAIL IS SENT TO THIS ADDRESS TO COMPLETE REGISTRATION!! **

Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 02:15 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 ©2011, Crawlability, Inc.