Gmoney
The cv boot ripped because before you lifted the Libby, the rubber developed a memory. The same range of motion for thousands of miles. now you lifted it 4" that memory has now changed. The increased angle is now pulling on the top side of the boot. The rubber started to deteriorate so it was already weeker prelift. the extra tension on the boot just tore it apart. Your new boots should not have this problem.
a remanufactured cv will be weaker than new. The case hardening which is measured in thousandths of an inch has to be grinded down leaving less case hardening. plus the inner cvs can be reused.
Video on remanufacturing a cv
http://www.cvunlimited.com/remananaxle.htm
If i were you i would replace the cracked cv. before removing it from the vehicle jack the front end up and crank the wheel to full lock so you can see th c.v. cut off the boot, wipe away the grease and look at the inside of the crack. is it chipped or dented? check the shaft as well. Also spin the wheel by hand and see if it binds. I would actually disconnect the sway bar and drop the wheel as far as possible (at this point the UCA is probably hitting the spring). If it does not bind and if the shaft is not hitting the cv housing. I would say the lift did not cause the cracked cv If the cv binds take a measurement. Jack up the wheel until it is free, measure. now lower the vehicle on to the ground and measure. chances are the HD lift with out the extra weight of a bumper and awinch left you with little down travel. So while you were driving down the road hitting potholes or bumps the front got a little airborne(1/2" or less) maxed out the travel. due to the maxed out suspension, combined with the hd spring force plus the unsprung weight most likely binded up the cv and cracked it. according to the JEEP 4x4 handbook and my opinion, this is what happened. Read it for yourself.
Jeep 4x4 performance handbook.
it covers everything about lifting a Liberty A MUST READ!!!!!!! pg 55 to 59
The bottom right hand corner of page 59 sums it up.
http://books.google.com/books?id=X95PU3 ... t#PPA55,M1
You should also look at the app. guide on OME website. they clearly say not to put an HD lift on without the extra weight of a bumper and winch. they will not warranty it. the extra weight would of sagged your suspension to the stated height of 1.5" . when yoou hit the potholes or bumps your tires would have stay in contact with the ground because the suspension would of had the proper amount of droop.
Call OME and talk to Seth or tech support and ask them questions. 888-907-4625