Stroker questions

[Rlpetty43]

Yesterday I sold my 82 cj7 (which was inside a shop building that burned down) however the guy didn't want to mess with the motor. So now I have a 4.2 that most likely has good crankshaft, rods, etc. So I started today looking into a stroked 4.0 first question I have is about pilot bearings one article which was pretty old briefly mentioned that pilot bearings changed between the 4.2 and the 4.0 and they had to have the "newer style machined to fit the 4.2 crankshaft. Any insight on this or some good references to check out? Thanks in advance!!

[Cheromaniac]

Here's your answer:

Pilot Bearings

The 5-speed manual transmission is the light-duty Peugeot BA10/5 in the '87-'89.5 4.0 XJ, the medium duty Aisin-Warner AX15 in the '89.5-'99 4.0 XJ, and the medium-duty New Venture Gear NVG3550 in the '00-'01 4.0 XJ. When carrying out engine swaps (either another 4.0 or a stroker), selection of the correct pilot bearing can be a headache. The details below will make choosing a pilot bearing simple:

'87-'89.5 BA10/5:

OEM pilot bearing 33004041 for '87-'91 4.0 engine
Advance Adapters pilot bushing 716156GM for '92-'06 4.0 engine
*Upgrade transmission to AX15 or NVG3550 for stroker engine swap*

'89.5-'91 AX15:

OEM pilot bearing 33004041 for '87-'91 4.0 engine or stroker
Advance Adapters pilot bushing 716156GM for '92-'06 4.0 engine

'92-'99 AX15 and NVG3550:

OEM pilot bearing 53009180AB for '87-'91 engine or stroker
OEM pilot bearing 53009180AB or 53009181 for '92-'06 4.0 engine.

If you have an auto tranny a pilot bearing isn't required.

[Rlpetty43]

Thank you for the information, I know this is an old post but I just now seen it for some reason, I do have the AX-15 so thanks again for the good information