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Jeep Wrangler YJ
YJ Build Threads & Member's Rides
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<blockquote data-quote="machoheadgames" data-source="post: 433822" data-attributes="member: 18789"><p>IMO you're typically safe up to about 2.5" on the stock driveshaft. The angles just get to be too severe on larger lifts. A longer driveshaft would mitigate the risk of the driveshaft falling out on suspension droop but it doesn't solve the angle issue. Stock driveshafts are short so raising the Jeep at all drastically increases the angles and u-joints just aren't capable of handling much change from stock.</p><p></p><p>Do a 2.5" lift and add a 1-1.25" body lift. </p><p></p><p>If you do the rough country lift, remove the shims and either install the springs with no shims, or buy some 2 degree shims and a transfer case drop kit. The 6 degree shims they supply are not ideal for anything except a SYE and double cardan driveshaft.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 433822, member: 18789"] IMO you're typically safe up to about 2.5" on the stock driveshaft. The angles just get to be too severe on larger lifts. A longer driveshaft would mitigate the risk of the driveshaft falling out on suspension droop but it doesn't solve the angle issue. Stock driveshafts are short so raising the Jeep at all drastically increases the angles and u-joints just aren't capable of handling much change from stock. Do a 2.5" lift and add a 1-1.25" body lift. If you do the rough country lift, remove the shims and either install the springs with no shims, or buy some 2 degree shims and a transfer case drop kit. The 6 degree shims they supply are not ideal for anything except a SYE and double cardan driveshaft. [/QUOTE]
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