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Jeep Wrangler YJ
YJ General Discussion
Driveline angles and new vibration
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<blockquote data-quote="Judy 87YJ" data-source="post: 438620" data-attributes="member: 21065"><p>I had to raise my NP231 transfer case about 3/4” to get it off the skid plate which has 1 3/4” spacers. The two had rubbed a hole in the TC so I installed a new rear half casing. I still have a slip yoke and will upgrade “next bonus” to a SYE. Since I raised the TC, I now have low rpm vibration. My TC is currently at 7.2 degrees and pinion is at 12.5. Driveshaft is at 21. My research is telling me to put a 6 degree shim in at the axle which would be 1</p><p>Degree less than the TC ant 7.2. Anybody know what this will make my driveshaft and will it be too much? Am I correct on figuring the shim size ?</p></blockquote><p></p>
[QUOTE="Judy 87YJ, post: 438620, member: 21065"] I had to raise my NP231 transfer case about 3/4” to get it off the skid plate which has 1 3/4” spacers. The two had rubbed a hole in the TC so I installed a new rear half casing. I still have a slip yoke and will upgrade “next bonus” to a SYE. Since I raised the TC, I now have low rpm vibration. My TC is currently at 7.2 degrees and pinion is at 12.5. Driveshaft is at 21. My research is telling me to put a 6 degree shim in at the axle which would be 1 Degree less than the TC ant 7.2. Anybody know what this will make my driveshaft and will it be too much? Am I correct on figuring the shim size ? [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Driveline angles and new vibration
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