advice on leaky pinion

I have a TJ w/ 4" pro comp lift, a SYE kit, and a cv driveshaft. I didn't have the sye kit & cv driveshaft put on until almost a month after the lift was put on, so I was driving along with a bad vibration at 35 and 50 mph, for almost a month. I had the gears done, along with the SYE kit and cv driveshaft at a 4wheel parts place here in town and I have a couple questions...

My pinion seal is leaking now and I've been reading all I can find on the subject here. The pro comp kit came with 1 inch spacers for the transfer case, and they are on there now. When they put on my SYE kit and cv driveshaft they left the spacers on there, so it's still dropped an inch. I thought they could get rid of them with that? Also, if they did the gear change, would the pinion seals and all that stuff be replaced as well?

I know I had a vibration after all that work, around 70mph, but it was slight, and I let it go. Could that vibration now have gotten so bad as to cause this? I'm taking it to a drivetrain specialist tomorrow but wanted to find out anything else I could before I go in case it's something they haven't messed with before.

I'm wanting the spacers gone and the transfer case in it's original spot. And I don't want vibration at any speed... Am I going to need a new/different driveshaft? I don't remember what the original looked like but I am going to take a pic of this one, if anyone wants to look at it I can send ya the pic. Any advice would be greatly appreciated. Thanks!

Troy

Reply to
Troy
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Reply to
L.W.(ßill) Hughes III

... I had the gears done, along with the SYE kit and cv driveshaft at a 4wheel parts place here in town and ...

Reply to
Jerry McG

Something else that comes to mind... Can the alignment have been messed up by removing the transfer case plate and not putting it back exactly as it was? I had a muffler put on and they had to remove the plate and hold up the transfer case with a stand.

I'm gonna go dig up my paperwork/receipts and everything and call them in the morning.

Does anyone out there have a 4 inch lift w the sye kit and are free from vibrations totally?

Reply to
Troy

Daughter has 4" on her 95 YJ, SYE and double cardon driveshaft, no vibs.

Reply to
Greg

The alignment of the drivetrain usually can't be altered side to side unless something is damaged. The Tcase support is just a plate with three big holes on each side and four little ones in the middle, unless they drilled new holes I doubt that is the problem. Of course if the skid plate is installed incorrectly, that might be a problem, but it's awfully hard to install it wrong.

I have a 4.5" lift with a SYE and double-cardan shaft, no vibes. Did they set up the rear pinion angle correctly? With a double-cardan shaft, there should almost no angle between the pinion shaft and the driveshaft....there should be a slight angle (1 degree or less) to make up for the slight axlewrap under acceleration in a TJ.

Reply to
Matt Macchiarolo

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