93 YJ ax15 to 727 transmission swap - Jeep Wrangler Forum

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Old 12-13-2011, 10:39 AM
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Unhappy 93 YJ ax15 to 727 transmission swap

i have a 93 yj with a 4.0, ax 15, and np 231. i wanted to go auto and upgrade to a tuffer trans then the 32rh. did this swap for my wifes 73 cj5 258, 727, and dana 300 no adapters. i ran into a few snags on the way for my yj. There is no CPS (crank position sensor) on the 727. no big deal got a kit that moves the cps sensor to the harmonic balancer. 727 trans bolt pattern matches the 4.0. have to use a 258 flexplate to bolt to the 4.0 to the 727 transmission. got the lokar shifter and kickdown cable. the np 231 spline and bolt pattern matches the 727 transmission. only a 1" differance in length from the ax15 vs the 727. im good on everything EXCEPT: a bracket for the transfercase shifter and it looks like there is a pressed in collar in the crank where the pilot bearing goes. 1: do they make a bracket for the 727 and np231 shifter or do i need to fab one? 2: the collar in the crank; is there a tool to take it out? does it come out?
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Old 12-13-2011, 10:52 AM   #2
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The bearing in the Crank, find a punch or a pin or the old pilot shaft or something that fits snug inside it, fill the bearing with grease just start the pin in and then hit it with a hammer, the grease will push the bearing out over the pin you use. {Where glasses!}

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Old 12-13-2011, 02:00 PM
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got the bearing out with a puller. my friend did just as you said and it worked for him. thank you though nubby55. my problem was there is a steel collar that reduces the crank hole size so that you can put the pilot bearing in place. had to drill two holes in the collar, tap them for a 5/16 bolt, and use a harmonic balance puller. it worked, but no room for error with the drill bit. another draw back the statre doesnt work for this. going to try a 258 starter. anybody know of a bracket made already for the transfercase shifter?
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