Looks like most of us w/ 2001 XJs had pretty bad vibes at 3". I installed an AA sye w/ a Tom woods DS along with my 3" RC lift. No shims beyond the 6* shims included w/ the leafs.

 

I had a 2000 with 4.5" and a tcase drop. No vibes ever.

 

I have 4.5 and a tc drop i get medium vibes at any speed over 50.oh and its a 2000 model

 

This is a huge help. Thank you very much. I found a set of three exactly like your picture on ebay for 15 dollars. I am going to get them. They should do the trick.

The tap I have looks like the middle one in the pic. It does not seem to have enough taper to bite into the metal good.

 

No problem, glad I could help. Let us know how it goes!

 

Well I was going to order that set of 3 taps off of ebay but I was out of town this past week for work and did not have access to internet. It was down at the place I was at.

So...I picked up a single tap made by Irwin from the local hardware store. I figured what was another $6, right? I quickly found out that not all taps are made the same. This one worked like a charm so I finally got the hole tapped. Success!

Learn something new everyday.

 

Excellent! Glad it worked out

 

the later year xjs seem to be alittle more iffy on the vibes. if you have the cash rustys makes a cross member with a built in 1 inch drop but you dont loose any clearance like the traditional block drop.