mjtjnj Posted September 22, 2011 Share Posted September 22, 2011 My stock TC has been making noise for years, when I had the engine rebuilt and swapped in the newer ax-5, I had a guy take a look inside and he could find absolutely nothing wrong with it. But it's noisy. I found a cheap low mileage NP231 from a 91 or 92 wrangler, with the electric speed sensor. I've heard I can just swap my manual parts over to the newer case, and use my old cable. Is that true? Do I swap the gear over too? I need to get a 37 tooth, anyway, just don't know whether to get the long or short style. Thanks in advance! Tom Link to comment Share on other sites More sharing options...
Blue88Comanche Posted September 22, 2011 Share Posted September 22, 2011 :popcorn: Link to comment Share on other sites More sharing options...
Jeep Driver Posted September 23, 2011 Share Posted September 23, 2011 Yes it's true, I just did it. I used the cable style unit that was originally in my 88 in the newer 94 in place the electronic unit of the 94. Link to comment Share on other sites More sharing options...
mjtjnj Posted September 23, 2011 Author Share Posted September 23, 2011 That's what I want to do. So did you keep the 88 gear or the 94 gear? I guess that's what I'm asking. Thanks Tom :help: Link to comment Share on other sites More sharing options...
Rymanrph Posted September 23, 2011 Share Posted September 23, 2011 The gears themselves are the same, but the shafts are a different length (long for the cable and short for electric). I've swapped the shafts out multiple times if I haven't been able to find the right one. Heat the shaft up just enough so that the plastic is just warm. Then you can punch the shaft out from the top (some gears don't have the hole on the top of the plastic, but it can be drilled out). Then just hammer in the new shaft. The long shafts are sometimes cheaper and easier to come by depending on how many teeth you need. Link to comment Share on other sites More sharing options...
Jeep Driver Posted September 24, 2011 Share Posted September 24, 2011 That's what I want to do. So did you keep the 88 gear or the 94 gear? I guess that's what I'm asking. Thanks Tom :help: I used the entire assembly, including the gear that went with the cable style unit. I used the 88 cable unit and the 88 gear. Link to comment Share on other sites More sharing options...
Boots Posted September 25, 2011 Share Posted September 25, 2011 :agree: I'm using a np231 from a TJ and I just took the cable one out of my old t-case and slid it in to the newer one. Link to comment Share on other sites More sharing options...
cweemanrun Posted September 25, 2011 Share Posted September 25, 2011 if you go on jeepforms they have a chart telling what number of teeth you need on the gears its a combo of tire size to gear ratio. Link to comment Share on other sites More sharing options...
cweemanrun Posted September 25, 2011 Share Posted September 25, 2011 http://www.jeep4x4center.com/jeep-speed ... QAodDXrHcQ here's the chart Link to comment Share on other sites More sharing options...
mjtjnj Posted September 27, 2011 Author Share Posted September 27, 2011 Thanks, guys, exactly what I was looking for! Tom Link to comment Share on other sites More sharing options...
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