I would like to keep the stock motor mounts 99tj 4.0 and lift the motor 1" with plate or something. I have seen a post were someone made them but can not find now. Someone sales a 1" plate kit or should I buy a motor mount designed to do the job.
Puts the drivetrain (t-case) more inline with the rear driveshaft, and helps reduce vibes some on TJ's/etc with really short rear driveshafts.
As far as the original post, I made a 2" for mine. I believe one side of the stock motor mounts is a stud and the other is a hole for the bolt. You can either use two bolts and get rid of the stud, or use rectangular tubing and have a nut on the stud and another nut/bolt that holds the tubing to the frame on that side.
I think there are three somewhat decent reasons as to why:
1. driveline angles (as mentioned above...very useful on a TJ)
2. raises the oil pan about an inch (that never hurts)
3. keeps you from having to do any radiator/fan shroud relocation when doing a BL (OK...so a real simple reason, but still valid)
JKS and Go-Fer-It (and maybe others) sell BMML (Budget Motor Mount Lifts)...
Exactly! I did 1" BL. I used the M.O.R.E. 1" Bombproof MM's, more expensive than spacers but they are HD... far better than the stock mounts. Spaced the transfercase mount up about 1/2", almost no vibration at all with the SYE and CV rear driveshaft. Still using the stock skid pan but that will change later. I think with a flatter skid I can gain about 2" more clearance.