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ax15 for 4.0 swap


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others will chime in with better info than me but I believe you need to match the flywheel to your timing system. If you are using the renix ECU, you will need a flywheel from a renix so that your CPS will read the wheel correctly. An internal slave Ax-15 could be renix but is most likely OBD1. 

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They did change form internal to external slave around 1994.  going from a ba10 to ax-15 will require an input bearing swap for 90+ units
 

 

Internal slave not external

 
It could have had the external swapped in at a later point, but that time frame only had the internal
 

others will chime in with better info than me but I believe you need to match the flywheel to your timing system. If you are using the renix ECU, you will need a flywheel from a renix so that your CPS will read the wheel correctly. An internal slave Ax-15 could be renix but is most likely OBD1.


OBD1 started in the 91 models, 

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What harness and ECU are you using? Are you using the harness and computer from the '93 ZJ or from something else? My point was that I believe you have to match your flywheel to the computer that you're using. If you're gonna run renix, you'll need a renix flywheel. If you're going OBD1, you'll need a flywheel from an OBD1. 

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What harness and ECU are you using? Are you using the harness and computer from the '93 ZJ or from something else? My point was that I believe you have to match your flywheel to the computer that you're using. If you're gonna run renix, you'll need a renix flywheel. If you're going OBD1, you'll need a flywheel from an OBD1. 

 

^^ This.

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Just so it's known, the 1993 ZJ had the External slave setup.  

I know first hand as the bellhousing and transfer case I used for my swap came from a 1993 ZJ.  I used a renix flywheel and clutch assembly and a pilot bushing to fit the Renix crank and AX-15 snout.

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So as long as I get a 1993 Cherokee flywheel and pilot bearing I will be able to use the transmission

 

It sounds like you are setup correctly on the flywheel. The only advice I can offer on the pilot bearing is to make sure it slides on your transmission shaft before beating it in your crank. 

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