Jeep Wrangler Forum

Jeep Wrangler Forum (
-   TJ General Discussion Forum (
-   -   Skyjacker T-Case lowering kit (

dmetzler 10-14-2010 03:58 PM

Skyjacker T-Case lowering kit
I bought the Transfer case lowering kit from Quadratec to go with my 2" lift kit last Spring. Been working on mods for the last couple of months and now finally at the point to add the transfer case lowering rails between the frame and transmission skid plate.

Everything lines up, but when I go to put in the bolts through the skid plate and through the lowering rails, they will not catch in the frame. I have the skid plate jacked up, and the frames clamps on both sides, but the bolts will not catch. I suspect another 1/4" to 1/2" in length and the bolts would work great.

I would think that SkyJacker would provide bolts with the kit which are long enough, but apparently not. I contact Quadratec, SkyJacker, or simply track down new bolts on my own? They are grade 8 hex-drive flat-head bolts.



Don Metzler

King of Beers 10-14-2010 04:02 PM

I would call Skyjacker to see if they came with the kit. But you should not need to lower the T-Case with only 2" of lift.

dmetzler 10-14-2010 04:08 PM

I wondered lowering the T-case, but that was a suggestion by Quadratec when I ordered the 2" lift kit.

Nothing odd about the existing frame or skid plate - wondering why the bolts are not long enough?

Will follow up with SkyJacker.



jwm1986 10-14-2010 04:49 PM

That's because Skyjacker is one of those company's who doesn't think when they bundle kits! You end up with some things you don't need and then other things you still have to order...

I second the fact that there is almost no way you should need a skid drop with only 2 inches lift.

IslandTJ 10-14-2010 05:16 PM


Originally Posted by King of Beers (Post 819982)
But you should not need to lower the T-Case with only 2" of lift.

I experienced vibrations from first installing my 2" BDS lift years ago. At the time I was running 31" tires.

I resolved the issues by installing 4 washers per transfer case bolt, to lower the transfer case skid and realign my drive line.

When I finally got around to installing my 33" tires, I also installed a 1.25" body lift and a 1" motor mount lift for additional clearance.

The motor mount lift allowed me to remove the drop and washers from my transfer case skid :).

dmetzler 10-14-2010 06:15 PM


Originally Posted by jwm1986 (Post 820053)
I second the fact that there is almost no way you should need a skid drop with only 2 inches lift.

It seems overkill, but should not adversely affect the ride, should it?

IslandTJ 10-14-2010 09:22 PM


Originally Posted by dmetzler (Post 820182)
It seems overkill, but should not adversely affect the ride, should it?

Bottom line, after you install the suspension lift, drive your Jeep. If you don't feel any vibes, congratulations; else, if you do get vibes - install the spacer or drop the transfer case skid one washer at a time.

This how the spacer looks without the Skyjacker sticker:

mjfitzner 10-15-2010 02:45 AM

I was installing my Rough Country T/C drop and the bolts werent threading. I ended up taking 1 of the stock bolts to the hardware store and used their little thread match thing. The bolts that came in the kit were standard but I needed metric bolts. Maybe thats your problem.

dmetzler 10-15-2010 11:08 AM

I wondered that myself, but was able to thread the new bolts into the frame to test. The 2 1/2" bolts provided with the SJ kit are about 1/4" too short.

I called SJ and they said the 2 1/2" bolts should work, but were sending me a set of 3" bolts from another kit.

tex00000 03-29-2011 11:31 AM

hey what are those skyjacker rails made of cause im looking for some that arent metal.

Jerry Bransford 03-29-2011 12:17 PM

Those bolts are nothing more than common hardened bolts you can find locally. Take one of the bolts with you to a hardware store that has a good selection and match up the thread size. If your TJ is an earlier model, perhaps 2001 or so and older, the bolts have SAE threads and you only need to make sure the new longer bolts are Grade 5 or Grade 8. If you find both Grade 5 and 8, Grade 5 is more than strong enough and less expensive. Grade 5 has three little tic marks extending out radially from the center on the top of the bolt head, Grade 8 has six tic marks.

If they are the smaller diameter metric size bolts used in newer Jeeps, you need them to be an 8.8 or 10.9 hardness which is roughly equivilent to SAE Grade 5 and Grade 8. The bolts will actually say 8.8 or 10.9 on the bolt head.

jeepjones 03-29-2011 12:31 PM

If a hardware store doesn't have them a specialty fastener store will, try to get the hardened bolts, grade 8's will certainly work as will grade 5's but as everyone knows sometimes those bolts will seize up and can be quite difficult to remove, the grade 5's won't take the abuse and will end up snapping upon a difficult removal. Use lots of Anti-Seize.

All times are GMT -5. The time now is 02:29 AM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.