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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: 434746" data-attributes="member: 18789"><p>Hah I expected more questions. Its all good. </p><p></p><p>The XJ transmissions have a 10° different clocking compared to a YJ. The reason is the transfer case would hit the XJ body with a YJ clocking. So they clocked them lower. The YJ will have problems with that because the transfer case will hit the skid plate. So you need the YJ clocking. You can accomplish that by redrilling the back of the trans. The tcase on the Cherokee transmission may be fine. Verify it’s an np231. XJs could also have the NP242, you need the NP231. You will still need to separate them and reclock the transfer case by redrilling the back of the transmission. then you can bolt the XJ transfer case back on in the new holes you drilled. When you look at the back of the transmission, you basically need to rotate the transfer case 10° clockwise. </p><p></p><p>As for shifters, the XJ uses a very different style shifter than a YJ and it’s built for the XJ console. If you want it to be remotely like what you have now, you need the stock transfer case shifter made for a 4.0 AX15. The problem is though that shifter will not bolt up to the Cherokee transmission completely. One of the holes for it is cast into the transmission’s 4wd adapter which is different from YJ to XJ. The tcase shifter bolts to two studs on the transmission shifter and then a final bolt going into the side of the trans 4wd adapter. The XJ will be missing that hole and so the shifter won’t be very stable only being supported up top. </p><p></p><p>Dakota bellhousing can be found here:</p><p></p><p><a href="https://www.ebay.com/itm/275003944314?mkcid=1&mkrid=711-53200-19255-0&siteid=0&customid=link&campid=5337789113&toolid=20001&mkevt=1" target="_blank">Dakota 2.5 AX15 Bellhousing</a></p><p></p><p>I would rather the Dakota route because it reuses stock parts. The advance adapter does too to some degree but it also uses some custom stuff. Like I think they give you a slave cylinder to use. I wouldn’t want that, I like pre-bled assemblies that I can just buy and swap out. </p><p></p><p>I believe you will need a special clutch kit which you might need to get from advance adapters. The AX15 is 10 spline and AX5 is 14 spline. The pilot tip on the transmissions are different sizes as well. </p><p></p><p>No, AX5 shifter can not be used on the AX15. Well, it kind of can. I believe advance adapters gives you an adapter plate for that with longer bolts or something. And then you have to flip the shifter stick around in the base. I’d rather just use the stock AX15 parts myself, but I’m picky. </p><p></p><p>Yeah I’ve seen that kit. It’ll get the job done. I just prefer to use as many factory parts as I can if possible. At one point they had a solution for the transfer case shifter too I think but I don’t recall what they did there. I think they give you a different bracket to swap the shifter into or something.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 434746, member: 18789"] Hah I expected more questions. Its all good. The XJ transmissions have a 10° different clocking compared to a YJ. The reason is the transfer case would hit the XJ body with a YJ clocking. So they clocked them lower. The YJ will have problems with that because the transfer case will hit the skid plate. So you need the YJ clocking. You can accomplish that by redrilling the back of the trans. The tcase on the Cherokee transmission may be fine. Verify it’s an np231. XJs could also have the NP242, you need the NP231. You will still need to separate them and reclock the transfer case by redrilling the back of the transmission. then you can bolt the XJ transfer case back on in the new holes you drilled. When you look at the back of the transmission, you basically need to rotate the transfer case 10° clockwise. As for shifters, the XJ uses a very different style shifter than a YJ and it’s built for the XJ console. If you want it to be remotely like what you have now, you need the stock transfer case shifter made for a 4.0 AX15. The problem is though that shifter will not bolt up to the Cherokee transmission completely. One of the holes for it is cast into the transmission’s 4wd adapter which is different from YJ to XJ. The tcase shifter bolts to two studs on the transmission shifter and then a final bolt going into the side of the trans 4wd adapter. The XJ will be missing that hole and so the shifter won’t be very stable only being supported up top. Dakota bellhousing can be found here: [URL='https://www.ebay.com/itm/275003944314?mkcid=1&mkrid=711-53200-19255-0&siteid=0&customid=link&campid=5337789113&toolid=20001&mkevt=1']Dakota 2.5 AX15 Bellhousing[/URL] I would rather the Dakota route because it reuses stock parts. The advance adapter does too to some degree but it also uses some custom stuff. Like I think they give you a slave cylinder to use. I wouldn’t want that, I like pre-bled assemblies that I can just buy and swap out. I believe you will need a special clutch kit which you might need to get from advance adapters. The AX15 is 10 spline and AX5 is 14 spline. The pilot tip on the transmissions are different sizes as well. No, AX5 shifter can not be used on the AX15. Well, it kind of can. I believe advance adapters gives you an adapter plate for that with longer bolts or something. And then you have to flip the shifter stick around in the base. I’d rather just use the stock AX15 parts myself, but I’m picky. Yeah I’ve seen that kit. It’ll get the job done. I just prefer to use as many factory parts as I can if possible. At one point they had a solution for the transfer case shifter too I think but I don’t recall what they did there. I think they give you a different bracket to swap the shifter into or something. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
AX5 - AX15 swap questions
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