desertrunner

Possibly looking at upgrading to a RC 3.5" Series II Suspension lift for a 09 JKU. Is buying extended drive shafts necessary, or recommended? I would rather spend the money all at once rather than breaking something and fixing it down the road. I do plan on wheeling it not real hard core but be able to put it through a decent beating and i do plan to disconnect the sway bar.
And if new drive shafts are recommended do i need both or just the front?

wayoflife

being that you have a 4-door, only the front would be something you'll want to do and only if you have an auto.

desertrunner

so with a 6-speed even if i wanna disconnect i should be fine? what about tearing the front drive shaft boot?

wayoflife

that only happens if you have an auto as the boot catches on the sump pan of the transmission. a 6-speed will not have this issue.

desertrunner

awesome thanks for the expertise

rdubb1031

I know I've seen this in a post before, but what is the sump pan? I"m looking to add 1" spacers to my 2.5" TF coil. I'm guessing this should be something I look out for.
Thanks

wayoflife

with just 2.5" of lift and shocks that are made specifically for it, nothing will happen. if you go taller or install shocks that allow for more droop, your front drive shaft will catch on the lip of the sump pan when flexing and, in addition to tearing the slip shaft boot, you will eventually start peeling the pan down and potential cause a leak.

please be advised that this information only applies to 2007-11 JK's. 2012's have different issues and ones that apply to both autos and manuals.

whiterhin0

Don't mean to hijack, but what is different about the 12. I have a 12 unlimited sport manual with 3.5" (2.5 tf coils and 1.0 tf spacers) up front and 2.5 tf coils in the rear.

rdubb1031

Are you saying that the 1" spacers with coils would not have the same problems as just a 3.5" lift?

do you still recommend the Coast 1310 DS?

wayoflife

the position of the exhaust cross over is different and both manual and autos will have the front drive shaft make contact with it if you have enough droop.

what i'm saying is that the problem is with the amount of droop you have and that will be determined by shock length. if you have new longer shocks to accomodate the taller lift you'll have, yes, you will have a problem.

yes, i would still recommend a coast 1310.