tcase swap - Pirate4x4.Com : 4x4 and Off-Road Forum

captain chaos · 11-10-2008, 09:49 PM

So my tcase on my 89 XJ, np242, is leaking enough that I'm gonna have to drop it before too much longer. And I got to thinking, if its gotta come down, why not look at an upgrade? I don't really "need" the full time fucntion, so what would be my best bet for an upgrade? I do plan to go bigger in the future with my tires and axles, so might as well weed out any weak links while I'm in there. A little fab work isn't a big deal, so it doesnt have to be bolt up. I've done some searching, and I've seen a zillion different routes people have taken. I see the np231/d300 double is one people have done, but I dont know if I need to do a doubler. Anyone here done a swap to something other than an np231?

captain chaos · 11-12-2008, 09:04 AM

any suggestions on where to look?

blysccr · 11-12-2008, 10:46 AM

i have a buddy who had a rubicon

dyna trac 60's 5.13 spooled the whole 9 yards, and still runs the rubicon 4.1. so eventhough it's chain driven, it's pretty stout.

just an idea

jpfrk2001 · 11-12-2008, 01:03 PM

I vote for the 231/300 twin sticked with all the best parts. Its a poormans 4 speed that can still do front digs if wanted. OR, if you got the cash, call up atlas and your done.

11-10-2008, 09:49 PM	#1 (permalink)
captain chaos Registered User Join Date: Aug 2008 Member # 118917 Location: Lynchburg VA Posts: 33	tcase swap So my tcase on my 89 XJ, np242, is leaking enough that I'm gonna have to drop it before too much longer. And I got to thinking, if its gotta come down, why not look at an upgrade? I don't really "need" the full time fucntion, so what would be my best bet for an upgrade? I do plan to go bigger in the future with my tires and axles, so might as well weed out any weak links while I'm in there. A little fab work isn't a big deal, so it doesnt have to be bolt up. I've done some searching, and I've seen a zillion different routes people have taken. I see the np231/d300 double is one people have done, but I dont know if I need to do a doubler. Anyone here done a swap to something other than an np231?

11-12-2008, 01:03 PM	#4 (permalink)
jpfrk2001 New Beginnings Join Date: Sep 2007 Member # 99513 Location: On the move Posts: 4,244	I vote for the 231/300 twin sticked with all the best parts. Its a poormans 4 speed that can still do front digs if wanted. OR, if you got the cash, call up atlas and your done. __________________ My jeep is a hotrod! /forum/jeep-hardcore-tech/658004-going-against-odds.html NEW BEGINNINGS: /forum/general-4x4-discussion/971511-jealle-o-cigano.html

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11-12-2008, 09:04 AM	#2 (permalink)
captain chaos Registered User Join Date: Aug 2008 Member # 118917 Location: Lynchburg VA Posts: 33	any suggestions on where to look?

11-12-2008, 10:46 AM	#3 (permalink)
blysccr Registered User Join Date: Jan 2008 Member # 105681 Posts: 661	i have a buddy who had a rubicon dyna trac 60's 5.13 spooled the whole 9 yards, and still runs the rubicon 4.1. so eventhough it's chain driven, it's pretty stout. just an idea