maddzz1 Posted July 31, 2009 Share Posted July 31, 2009 Is it a good upgrade for an MJ? No slip yoke Looks like it won't work with a driver side drop tho Link to comment Share on other sites More sharing options...
Eagle Posted July 31, 2009 Share Posted July 31, 2009 You must be looking at a transfer case out of an old full-size Cherokee or pickup. Quadratrac is Jeep's name for a full-time 4WD transfer case. The old ones with the passenger side drop were made by Borg-Warner. Big, very heavy, some had a low range and some did not. My old Cherokee had the low range. It was shifted by a little lever that half hid under the driver's seat. The lock function was controlled by a vacuum switch inside the glove box. The new Grand Cherokees also have an option for Quadratrac, but the current (and recent) versions are New Process/New Venture Gear units that are driver's side drop. They do not have a slip yoke eliminator. Link to comment Share on other sites More sharing options...
maddzz1 Posted July 31, 2009 Author Share Posted July 31, 2009 So it is just an older version of a 242? sort of Link to comment Share on other sites More sharing options...
Eagle Posted July 31, 2009 Share Posted July 31, 2009 No. A 242 is what Jeep calls Selec-Trac. It offers a 2WD position. Quadratrac is full-time 4WD, and the old ones (as I noted) did not always include a low range. There is no 2WD position for a Quadratrac transfer case. Link to comment Share on other sites More sharing options...
grandpabear Posted July 31, 2009 Share Posted July 31, 2009 I too, had the quadratrac, it has a 272:1 low range, with the dinky lever under the seat, as Eagle said. What I did like about it was it was a lockable transfer case, by turning that vacuum switch in the glovebox. with selectable lockers, it would be fully locked, side to side, and front to rear. Link to comment Share on other sites More sharing options...
DirtyComanche Posted July 31, 2009 Share Posted July 31, 2009 Correct me if I'm wrong. But is not the NP228 or perhaps the NP229 (whichever it was, I never remember) offered in the 1984-86 XJs. It had fixed yokes, and part/full time operation with low range. The switch to engage part/full time was in front of where the trans shifter went, and the range lever was where it normally is, IIRC. I think they had reliability issues being vacuum shifted. Otherwise they seem to do okay, but nobody runs them so you've got a very limited research base. Link to comment Share on other sites More sharing options...
Eagle Posted July 31, 2009 Share Posted July 31, 2009 The 228/229 was offered in the 84-86 XJ and 86 MJ as Selec-Trac. Both of those boxes were 2WD transfer cases with the option for full-time 4WD. They are not the same thing as the old Borg-Warner Quadratrac. Link to comment Share on other sites More sharing options...
jteckmann Posted July 31, 2009 Share Posted July 31, 2009 Here's a link with some good info and history on the 70's era QuadraTrac: http://jubileejeeps.org/quadratrac/index.htm Link to comment Share on other sites More sharing options...
maddzz1 Posted July 31, 2009 Author Share Posted July 31, 2009 Correct me if I'm wrong. But is not the NP228 or perhaps the NP229 (whichever it was, I never remember) offered in the 1984-86 XJs. It had fixed yokes, and part/full time operation with low range. The switch to engage part/full time was in front of where the trans shifter went, and the range lever was where it normally is, IIRC. I think they had reliability issues being vacuum shifted. Otherwise they seem to do okay, but nobody runs them so you've got a very limited research base. The one I was looking at had fixed yokes, not a slip yoke. It listed comanche as one of the vehicles but I had never heard of it. thats why i started this post Link to comment Share on other sites More sharing options...
Eagle Posted July 31, 2009 Share Posted July 31, 2009 Correct me if I'm wrong. But is not the NP228 or perhaps the NP229 (whichever it was, I never remember) offered in the 1984-86 XJs. It had fixed yokes, and part/full time operation with low range. The switch to engage part/full time was in front of where the trans shifter went, and the range lever was where it normally is, IIRC. I think they had reliability issues being vacuum shifted. Otherwise they seem to do okay, but nobody runs them so you've got a very limited research base. The one I was looking at had fixed yokes, not a slip yoke. It listed comanche as one of the vehicles but I had never heard of it. thats why i started this post It did have a fixed output yoke, not a slip yoke. It was available for the MJ only in 1986. In 1987 it was replaced by the 242 t-case. But it was not the Borg-Warner Quadratrac case, and was not called Quadratrac. Link to comment Share on other sites More sharing options...
DirtyComanche Posted August 1, 2009 Share Posted August 1, 2009 Was it really selec-trac? Hmm. Guess it could be, the 242 was selec-trac too? Doesn't make a lick of a difference to me. I don't think I'll ever decide I want to run one. Link to comment Share on other sites More sharing options...
Eagle Posted August 1, 2009 Share Posted August 1, 2009 "Selec-Trac" was nothing but Jeep's name for the optional 4WD system with full-time 4WD capability. For the 84-86 Cherokee, the 228/229 transfer case was "Selec-Trac." For the 87-01 Cherokee, the NP/NVG 242 was "Selec-Trac." Link to comment Share on other sites More sharing options...
Automan2164 Posted August 1, 2009 Share Posted August 1, 2009 "Selec-Trac" was nothing but Jeep's name for the optional 4WD system with full-time 4WD capability. For the 84-86 Cherokee, the 228/229 transfer case was "Selec-Trac." For the 87-01 Cherokee, the NP/NVG 242 was "Selec-Trac." And the Part-time NP231 is "Command-Trac". Rob L. Link to comment Share on other sites More sharing options...
Eagle Posted August 1, 2009 Share Posted August 1, 2009 "Selec-Trac" was nothing but Jeep's name for the optional 4WD system with full-time 4WD capability. For the 84-86 Cherokee, the 228/229 transfer case was "Selec-Trac." For the 87-01 Cherokee, the NP/NVG 242 was "Selec-Trac." And the Part-time NP231 is "Command-Trac". Rob L. As was the NP207 used from 84 thru 87 Link to comment Share on other sites More sharing options...
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