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Jeep Wrangler YJ
YJ General Discussion
AX5 - AX15 swap questions
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<blockquote data-quote="machoheadgames" data-source="post: 434743" data-attributes="member: 18789"><p>If you use that trans, definitely convert it to external. You’ll need a bellhousing and a few other factory parts. That conversion is quite simple, though buying all the parts might take up some of your lunch money. But it’s totally worth it. </p><p></p><p>The transmission from the XJ is debatable on being worth it. The clocking for the transfer case is wrong. You can fix that by redrilling the 6 holes in the back. The bad part is that the XJ transmissions are missing a bolt boss that supports the transfer case shifter. The YJ AX15 transfer case shifter definitely needs that hole for stability. I am not sure how the AX5 transfer case shifter attaches. Usually people swapping from AX5 to AX15 need to get the AX15 version tcase shifter from eBay or similar because the AX5 won’t bolt up. Which then puts you at the same problem: Cherokee trans doesn’t have the bolt hole needed. </p><p></p><p>Also to go to an AX15 you will need to pull the transfer case and tear it apart to change the input gear to a 23 spline gear. Since you have a 95 you would probably need the late cut input gear. So when you look at Novak or something, you’d want a 23 spline, short, late cut, narrow bearing gear. Or you can source a transfer case from a 4.0 Jeep. </p><p></p><p>5th gear will also be taller 0.79 OD vs the AX5 0.84 OD so you’ll lose a bit of highway power. Also slightly taller 1st (3.83 AX15 vs 3.93 AX5). None of it is necessarily dealbreakers but definitely things to work through. </p><p></p><p>To adapt the AX15 to a 2.5 you will need either a Dodge Dakota bellhousing (factory style setup) or you will need the adapter kit from advance adapters that gives you a bellhousing adapter. I’d go the Dakota route if I could find one. </p><p></p><p>Since the XJ is basically a car, they used a really long throw shift tower combined with a short shift lever so that the driver had the proper leverage to work the trans. For that reason you Can’t use the shifter from an XJ in a YJ, it’ll be hard to reach and would have really long throw if you extended it up to you. So bank on buying a YJ shift tower. You should be able to move your current AX5 stick over to the YJ shift tower from eBay once you get that and install it. Buy some shift tower gaskets too.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 434743, member: 18789"] If you use that trans, definitely convert it to external. You’ll need a bellhousing and a few other factory parts. That conversion is quite simple, though buying all the parts might take up some of your lunch money. But it’s totally worth it. The transmission from the XJ is debatable on being worth it. The clocking for the transfer case is wrong. You can fix that by redrilling the 6 holes in the back. The bad part is that the XJ transmissions are missing a bolt boss that supports the transfer case shifter. The YJ AX15 transfer case shifter definitely needs that hole for stability. I am not sure how the AX5 transfer case shifter attaches. Usually people swapping from AX5 to AX15 need to get the AX15 version tcase shifter from eBay or similar because the AX5 won’t bolt up. Which then puts you at the same problem: Cherokee trans doesn’t have the bolt hole needed. Also to go to an AX15 you will need to pull the transfer case and tear it apart to change the input gear to a 23 spline gear. Since you have a 95 you would probably need the late cut input gear. So when you look at Novak or something, you’d want a 23 spline, short, late cut, narrow bearing gear. Or you can source a transfer case from a 4.0 Jeep. 5th gear will also be taller 0.79 OD vs the AX5 0.84 OD so you’ll lose a bit of highway power. Also slightly taller 1st (3.83 AX15 vs 3.93 AX5). None of it is necessarily dealbreakers but definitely things to work through. To adapt the AX15 to a 2.5 you will need either a Dodge Dakota bellhousing (factory style setup) or you will need the adapter kit from advance adapters that gives you a bellhousing adapter. I’d go the Dakota route if I could find one. Since the XJ is basically a car, they used a really long throw shift tower combined with a short shift lever so that the driver had the proper leverage to work the trans. For that reason you Can’t use the shifter from an XJ in a YJ, it’ll be hard to reach and would have really long throw if you extended it up to you. So bank on buying a YJ shift tower. You should be able to move your current AX5 stick over to the YJ shift tower from eBay once you get that and install it. Buy some shift tower gaskets too. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
AX5 - AX15 swap questions
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