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Unread 03-03-2013, 10:19 AM   #1
95yj0645
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Which pilot bushing?

I have a 93 4.0 with an 88 258 crankshaft. Which pilot bushing do I need to get to bolt my ax15 up to it?

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Unread 03-03-2013, 12:11 PM   #2
JeeperDon
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I'd say for an 88. Ask Rock Auto.
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Unread 03-03-2013, 12:15 PM   #3
BIGHEEP
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Advanced adapters. The 88 bushing will not fit the input of your ax-15. When I put my 4.0L HO infront of my early style AX-15 I used a 258 bushing and tunred the OD down in a lathe so it would fit the 4.0L crank.
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Unread 03-03-2013, 12:17 PM   #4
JeeperDon
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It's also a function of what you are plugging into it. Different transmissions over the years have different pilot bushing ID needs.
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Unread 03-03-2013, 12:33 PM   #5
BIGHEEP
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Quote:
Originally Posted by JeeperDon View Post
It's also a function of what you are plugging into it. Different transmissions over the years have different pilot bushing ID needs.
That is what I was getting at. Mine was a 1990 ax-15 which had the small input they used behind the 258. If your ax-15 is the stock 1994 that came with it the input will be larger. Now if you did have the early style ax-15 you would just use 80-91 6 cyl. CJ/YJ bearing. Your best bet would be call Advanced Adapters and tell them what you are trying to do and they will hook you up with the right bushing.
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1981 Scrambler, Vortec 350,4L60e,D300, Currie 9" F&R
19xx YJ/CJ/TJ/XJ/Waggy thing 4.0L H.O., AW4,
NP231 w/HD SYE,D44 locked/D44 w/LSD,4.09 gears
Build thread http://www.jeepforum.com/forum/f12/m...igheep-534340/
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Unread 03-03-2013, 05:07 PM   #6
UltimatE
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I don't remember which year the pilot snout increased from 0.590" to 0.750", but if you have the smaller one, a stock pilot bushing will work from an '88. If you have the larger one you'll likely need to get a custom one that fits the ID of the crank shaft and the OD of the transmission.
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Unread 03-03-2013, 05:56 PM   #7
95yj0645
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Sounds like I just need to mic the crank and the input shaft and go from there. I believe it is the newer style ax15.
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Unread 03-03-2013, 06:54 PM   #8
JeeperDon
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It's a cheap part. Buy both, then tear into it knowing you're covered.
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