RGniady81 Posted May 25, 2019 Share Posted May 25, 2019 Quick question pertaining to this. Has anyone successfully converted a v-belt driven 4 cyl to a serpentine driven system? Link to comment Share on other sites More sharing options...
Shortbusdriver Posted May 25, 2019 Author Share Posted May 25, 2019 I have not done this myself but in my searches I found that the crankshaft snout is different, people mentioned needing to add a shim to get the crank pully to align with the rest of the components. Otherwise everything else can just be bolted on from the serpentine motor. IIRC there is a 3/8" difference between the serp and v groove crank pully. hope that helps! Link to comment Share on other sites More sharing options...
Jeep Driver Posted May 25, 2019 Share Posted May 25, 2019 27 minutes ago, Shortbusdriver said: I have not done this myself but in my searches I found that the crankshaft snout is different, people mentioned needing to add a shim to get the crank pully to align with the rest of the components. Otherwise everything else can just be bolted on from the serpentine motor. IIRC there is a 3/8" difference between the serp and v groove crank pully. hope that helps! The snout change came later, around '97 IIRC. You can install an early serpentine balancer on a later snout but not a later balancer on an early snout...........no shim. If your MJ has AC, the later AC compressor will not mate to your existing lines AND the later balancer will not go on the snout..........so.........for all practical purposes the later TJ/XJ MPI accessories are out of the question. You'll need a complete accessory package/assembly from a '87-'90 XJ or MJ. Link to comment Share on other sites More sharing options...
Lycaon1349 Posted April 14, 2022 Share Posted April 14, 2022 Sorry to revive a 3 year old post but did anyone end up getting anywhere with this? I'm going the other direction with a conversion, using a 2.5 in a Willys CJ build and ive started converting over to a 3 point v belt setup but I'm stuck trying to find a balancer. Did anyone find out for sure if the GM balancer will fit dimensionally on the 2.5 snout? I'd gladly have one neutral balanced if it were that easy. Also would a V belt balancer from a 4.2 fit? Hesco sells one that doubles as a crank position sensor and that would be perfect for the MicroSquirt fueling setup ill be running for it. Thanks all Link to comment Share on other sites More sharing options...
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