TylerA23

Looks awesome! Exactly what I was hoping mine would look like. Thanks again for the parts list from before.

Red1992XJ

That looks fantastic! Really, very well done.

jturbo

^^^ thanks guys!!

This past Friday, I had the XJ at the local shop for an alignment. Today the wife and I took a ride up to Brattleboro, VT. Around 150 miles round trip. Jeep drove nice.


So far I've done ~650 miles in this XJ. Next up will be U-joints in the rear axle as well as new bushings in the rear shackles.

JT

TylerA23

ixanay_on-the_exjay

Coil spacers are usually applied in addition to the isolator. This should make lift calculations easier too as you're not changing multiple factors and your spacers are a known measurement as is your current lift. I don't think there is a strong argument to say you NEED to have an isolator but it is normally kept.

jturbo

jturbo

ixanay_on-the_exjay

Shall we make our wagers? I'll take "T-Case Drop in your future" for 400, Alex

jturbo

Yup - still has the same slight vibration. Not sure why I'd need to drop the T-case? The new rear springs only have a slight increase over stock. And my 99 is the same setup with no vibs.

I'm open to suggestions on what to check next....

JT

ixanay_on-the_exjay

I would say you should pull the front DS and drive around just to rule out the possibility that you're dealing with angle/u-joint issues in the front. Do you have the Low Pinion D30 in either of your Jeeps? Not sure if 99 is included but I've read here that 2000/2001 are generally more susceptible to driveline vibes. Reading back you give clue that the vibes got worse with the shackles which is a red flag for lift related vibes, specifically the rear. You also mentioned that you measured from fender to center of axle - not sure how accurate that is. I would double check using the Top of Axle Tube >> Frame Rail measurement. Stock measurements are ~6.75" front and ~6" back. You might have more than you think. You can test the T-Case drop by just throwing one in or incrementally adding washers until the vibes disappear. I have a 1" drop I just took out - might be overkill for you but if you're interested it's yours.

jturbo

Good info, and thanks for the reply. I had actually went ahead and bought some hardware to do a TC drop back when I had lift shackles.
But I decided it was easier to just go back to the stock rear shackles, which also made the ride height more level. And the vibs improved significantly.

More info to follow later tonight.

jturbo

Measured the distance between the rear axle and the frame - somewhere between 8.0 and 8.25"

Tonight I put 3 washers as spacers on the TC mount, about 1/4". Can't add any more than that due to the stupid studs in the frame. If it helps, I will get longer bolts and pull out the studs this weekend.....

jturbo

The 3 washers (1/'4") TC drop helped, but still had some vibs. So I ended up removing the x-member studs and dropping the cross member a half inch and that did the trick. Much better.



Also did an oil change last night. Good for another 3k miles.

New speakers for the front door are on order. Was hoping that they came in today, but no dice. So I'll have to change them this coming week after work.

ixanay_on-the_exjay

Glad you were able to

a) get those studs out with no problems I had two snap on me, bolts are much nicer.
b) get those vibes sorted. 1/2" seems like a small price to pay for the improved suspension.

What speakers did you go with? Spring for 6"?

jturbo

Thanks - I went with JVC CS-J620 6.5" speakers. Nothing fancy, but better than the current speakers that don't work....

Washed the Jeep Friday night, took a few pics today in the frigid cold...



I've put over 1k miles on it since putting this one on the road.