EanS13 Posted July 7, 2018 Share Posted July 7, 2018 Hi everyone. I currently have an 87 Jeep MJ 4.0 with the BA10 transmission 2wd. I am currently in the process of changing out my BA10 for an AX15 and already have in my possession and AX15 transmission with the external slave cylinder and I plan on keeping it a 2wd. But i was wondering what other parts will i need and what else needs to be changed over and what years and models from other jeeps I may be able to find them on. I know the crossmember will need to be changed and since they are so hard to find I was wondering if there are any conversion kits that may exist to help out. Thank you Link to comment Share on other sites More sharing options...
Big Dan Posted July 7, 2018 Share Posted July 7, 2018 I just finished this. I used the same cross member and used one inch spacers between the frame and cross member.If you already have the tranny, bell housing and master/slave combo, you just need to find out what year ax15 you have.Earlier AX15 had a .59“ input shaft and the later models had a .75“ shaft.If you have the earlier model, nothing needs to be changed. Later model will require you to purchase a different pilot bearing - P/N - PB77HDSent from my Pixel 2 XL using Tapatalk Link to comment Share on other sites More sharing options...
Big Dan Posted July 7, 2018 Share Posted July 7, 2018 Additionally, the spacers were probably unnecessary - I did it to ensure my drive line was at a good angle. I welded perches on a Chrysler 8.25 and probably fudged up the angle a bit. Sent from my Pixel 2 XL using Tapatalk Link to comment Share on other sites More sharing options...
EanS13 Posted July 7, 2018 Author Share Posted July 7, 2018 I don't have the master and slave combo actually since I'm not sure from which year and model i can get them from. However my trans is of the later model. Can i reuse the BA10 transmission mount or is there a different one for the AX15? What about the drive shaft? Since i have the long bed itll be harder to find that longer drive shaft with the 23 spline can i just replace the U joint at the trans/drive shaft or is there a length difference? Link to comment Share on other sites More sharing options...
Big Dan Posted July 7, 2018 Share Posted July 7, 2018 I don't have the master and slave combo actually since I'm not sure from which year and model i can get them from. However my trans is of the later model. Can i reuse the BA10 transmission mount or is there a different one for the AX15? What about the drive shaft? Since i have the long bed itll be harder to find that longer drive shaft with the 23 spline can i just replace the U joint at the trans/drive shaft or is there a length difference? Master slave combo from 94-96 cherokee.You need an ax15 transmission mount (the rubber thing) and also the ax15 bracket (the metal bracket that holds the rubber mount).If you have a 2wd, the drive shafts shouldn't be a problem. At least mine was not. Sent from my Pixel 2 XL using Tapatalk Link to comment Share on other sites More sharing options...
EanS13 Posted July 7, 2018 Author Share Posted July 7, 2018 5 minutes ago, Big Dan said: Master slave combo from 94-96 cherokee. You need an ax15 transmission mount (the rubber thing) and also the ax15 bracket (the metal bracket that holds the rubber mount). If you have a 2wd, the drive shafts shouldn't be a problem. At least mine was not. Sent from my Pixel 2 XL using Tapatalk Clutch kit would be the same from the 94-96 cherokee as well? Link to comment Share on other sites More sharing options...
Big Dan Posted July 7, 2018 Share Posted July 7, 2018 That's correct Sent from my Pixel 2 XL using Tapatalk Link to comment Share on other sites More sharing options...
HOrnbrod Posted July 7, 2018 Share Posted July 7, 2018 You can reuse your existing drive shaft but you will need to replace the slip yoke (and u-joint) because of the spline count difference, 21 vs. 23. Link to comment Share on other sites More sharing options...
Big Dan Posted July 8, 2018 Share Posted July 8, 2018 That's on 4wd, the 2wd ax15 should be 27 spline.Count the splines on your drive shaft and output shaft on the tranny to make sure. Sent from my Pixel 2 XL using Tapatalk Link to comment Share on other sites More sharing options...
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