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Unread 11-13-2013, 07:21 PM   #1
aheborn
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1989 YJ Wrangler 
 
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231 & 242 transfer case swap?

Hi All
I am doing a frame-off restoration of a 1989 YJ Laredo. I have the 4.2L I6 with auto trans. I believe it's the TF999 tranny, yes? It's followed by a 2312 AMC transfer case which is completely shot. I have an '88 Cherokee with an I6 and it's followed by an 242 AMC transfer case (Quadratech?). Will they bolt up?
Thanks for all your help! These threads have been priceless.

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Unread 11-14-2013, 10:04 AM   #2
crackedcornish
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if your auto tranny is stock, then yes it's a tf999

from the XJ FAQS:
NP242 = "Selec-Trac" part-time OR full-time - 2.72:1 ratio low range - shift pattern 2wd - 4part-time - 4full-time - N - 4LO - used 87-01

as I understand it, a cherokee trans has the t/c clocked differently than a wrangler, so you will have to drill new mounting holes to get it clocked correctly for your application
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Unread 11-14-2013, 01:26 PM   #3
jeepguy85
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Quote:
Originally Posted by crackedcornish View Post
if your auto tranny is stock, then yes it's a tf999

from the XJ FAQS:
NP242 = "Selec-Trac" part-time OR full-time - 2.72:1 ratio low range - shift pattern 2wd - 4part-time - 4full-time - N - 4LO - used 87-01

as I understand it, a cherokee trans has the t/c clocked differently than a wrangler, so you will have to drill new mounting holes to get it clocked correctly for your application
Or buy one of these and clock it with it....

http://www.pirate4x4.com/forum/motor...0-shipped.html
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"When Chuck Norris drives, Chuck Norris controls the radio..."
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Mean Max created Chuck Norris with some spare parts, two trac bars and some differential fluid.
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Unread 11-15-2013, 06:44 PM   #4
aheborn
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I don't really know what "clocking it" means but I'll find out.
Thanks for your help both of you. I wonder if it would be easier to buy a junkyard one or a remanufactured one. Found one for $700 but seems like a lot.
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Unread 11-15-2013, 07:18 PM   #5
jeepguy85
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Think of the body of the transfer case as the hand on a clock. A clocking ring bolts between the transmission and transfer case and allows you to clock the transfer case by rotating the transfer case, usually in 10 degree increments, either up or down depending on the application.
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Quote:
Originally Posted by HurricaneRZA View Post
Mean Max created Chuck Norris with some spare parts, two trac bars and some differential fluid.
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Unread 11-24-2013, 10:21 PM   #6
aheborn
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Sweet thanks
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Unread 11-25-2013, 09:21 AM   #7
StanF
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Look in my 8.8 swap thread below for my experience with a clock ring. It's in the Tummy Tuck section.

Short answer - I recommend redrilling the mounting holes in the transmission flange to the desired clock angle. It saves $75, and ensures that everything will seal properly. That being said, I did find the clock ring to be an awesome drill template
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Unread 11-30-2013, 06:07 PM   #8
aheborn
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I found a transfer case attached to a 4.2 & tranny for $50! Dragged it out from the woods and proceeded to completely disassemble the transfer case & rebuild. Should be good now.
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Unread 12-01-2013, 07:24 AM   #9
jeepguy85
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Quote:
Originally Posted by aheborn
I found a transfer case attached to a 4.2 & tranny for $50! Dragged it out from the woods and proceeded to completely disassemble the transfer case & rebuild. Should be good now.
That is a good deal. I paid $60 for the NP231 AMC I put in my 87. Good find!
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Originally Posted by Exparrot View Post
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Quote:
Originally Posted by HurricaneRZA View Post
Mean Max created Chuck Norris with some spare parts, two trac bars and some differential fluid.
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Unread 12-01-2013, 09:01 AM   #10
fishadventure
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Quote:
Originally Posted by aheborn View Post
I found a transfer case attached to a 4.2 & tranny for $50! Dragged it out from the woods and proceeded to completely disassemble the transfer case & rebuild. Should be good now.
My favorite kind of find! I got thousands of dollars of VW Beetle stuff for almost nothing whenever I had to drag stuff out of the woods

For the record- 'clocking' the transfer case is not big deal. Parts-shelf-parts-number dependency isn't beneficial, imho. Basically you locate it where it needs to be and drill new holes. Install bolts. Done. And $700 is a crazy price for a transfer case. I have two I would sell right now for that! Heck, at $700 I would take the t-case out of my DD and sell it. $100- $250 tops is what I see.
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