Hi all. I have an 89 xj that had an aw4 which blew only a few months after buying it. I like manuals better anyway so I'm currently swapping it. After spending a while researching and looking for the right transmission and everything I'll need, I finally bought a transmission and now have all parts in the mail. I got an nv3550 with a 231 and teraflex sye from an 00 tj, (the ax15 and nv3550 are essentially the same for my purposes, and there's more information about ax15s). I got the old aw4 out a 2 weeks ago, and now I'm getting everything ready for the nv3550 next weekend. Right now I'm trying to figure out what to do with the old cooler lines for the aw4. It looks like I have a trans cooler mounted on the radiator, but then everywhere I look says that those lines go into the radiator. What should I do about these lines, and possibly the trans cooler too? The lines dripped for a good week after pulling the aw4, so there's probably still transmission fluid in the radiator/transcooler. Will I be ok just removing the lines and letting the radiator drip?
I also have a question about driveshafts. My aw4 and nv3550 are within a half inch of each other from bellhousing to end of tailhousing (no sye) on the aw4, and bellhousing to the center of the cardan on the nv3550. With this I was planning on just running my old front driveshaft in the rear, and no front driveshaft for now. Once the new tranny is on I'll measure it and see if I can still use a zj driveshaft in the front. Anyone happen to know what driveshafts would work for me in this case? Would that front driveshaft be too short in the rear? I have a dana 44 in back and I believe a dana 30 up front. Lastly somewhat unrelated, my front axle needs axle shafts and possibly something else internally. When it put in 4wd I got some grinding noises when turning. I have the chance to get the front axle out of that tj as well (dana 30?), but I'm not sure how it would work on my xj. I have a 4.5 inch lift btw and plan on going up to 33s or even 35s.
I also have a question about driveshafts. My aw4 and nv3550 are within a half inch of each other from bellhousing to end of tailhousing (no sye) on the aw4, and bellhousing to the center of the cardan on the nv3550. With this I was planning on just running my old front driveshaft in the rear, and no front driveshaft for now. Once the new tranny is on I'll measure it and see if I can still use a zj driveshaft in the front. Anyone happen to know what driveshafts would work for me in this case? Would that front driveshaft be too short in the rear? I have a dana 44 in back and I believe a dana 30 up front. Lastly somewhat unrelated, my front axle needs axle shafts and possibly something else internally. When it put in 4wd I got some grinding noises when turning. I have the chance to get the front axle out of that tj as well (dana 30?), but I'm not sure how it would work on my xj. I have a 4.5 inch lift btw and plan on going up to 33s or even 35s.
