Doing an SYE prior to doing lift?

Throws · Jan 27, 2016

Just trying to minimize the downtime I'll have when I do my lift, so I was wondering if there's any reason NOT to do my SYE ahead of time. It's my understanding that with a LA 4.5" kit I can use another front driveshaft in place of the rear. So, I'd just get the SYE part out of the way and swap the front DS into the rear's place. I'd be doing the lift a couple of months from now.

Workie or no workie?

-P
'99 Sport 4.0/4WD/Auto

clean4drxj · Jan 28, 2016

Yes do it, you'll be glad you did.

Throws · Jan 28, 2016

clean4drxj said:
Yes do it, you'll be glad you did.

Can I use the stock front DS as a rear before *and* after? I'm looking at a 4.5" LA lift.

-P

clean4drxj · Jan 28, 2016

You should be able to unless you have the RC longarms(their belly pan has a drop in it).

dan1977p · Jan 28, 2016

clean4drxj said:
You should be able to unless you have the RC longarms(their belly pan has a drop in it).

Wait, the RC crossmember has a built in TC drop? I didn't measure pre and post when I did the install so I just assumed it would be stock height. I wonder if that's why my rear output is clocked down 4* and my front is clocked up? This will be yet another reason why I hate this stupid crossmember.

dan1977p · Jan 28, 2016

Well spank my ass and call me Charlie. I just talked to Jonathan at rough country and they have a built in drop of about 1.25". I wish that was advertised by them or the vendor I bought it from.

lazyxj · Jan 28, 2016

dan1977p said:
Wait, the RC crossmember has a built in TC drop? I didn't measure pre and post when I did the install so I just assumed it would be stock height. I wonder if that's why my rear output is clocked down 4* and my front is clocked up? This will be yet another reason why I hate this stupid crossmember.

When dropping the crossmember, for better rear driveshaft angles, it increases the transfer case's front u-joint angle, not good.
Keeping the crossmember at the stock height and using an SYE, produces the best angles possible.

You can install the SYE before the lift but will need to wait on determining what angle shim to use until the lift is in and the angles measured.

dan1977p · Jan 28, 2016

Yeah, for anyone else, buyer beware. I got a sye to avoid a tc drop at the same time I got the rc kit assuming it was stock height.

Doing an SYE prior to doing lift?

Throws

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