Transfer case swap coming soon
My NP249's viscous coupler has gotten so bad it's not just binding up on turns. It's making nasty grinding and growling noises, mostly at low speeds (or I just can't hear them over wind noise at high speeds).
Yes, I have read the sticky post. Just a few clarifying questions.
I have an NP231 from my 1995 ZJ. Just want to double check that I'm correct here - this transfer case won't directly swap in without changing input shafts due to the extra collar on the shaft? So in that case, no ZJ NP231 is a "direct swap" into a 96-98 since they stopped using the NP231 in 1995?
If my transfer case won't work, I'm going to go with an NP242 from the junkyard. Next thing - the sticky thread said all of the t-cases were within 1/4" of each other in length. Maybe so, but proportionally front-to-rear, they're different lengths from the center. I know because both my jeeps have had 4.5" lifts with stock front upper control arms and the old one with the NP231 had a decent pinion/shaft angle, whereas my new one with the NP249 is about 10º off. I also tried putting my front shaft from my NP249 jeep into my old jeep with the NP231 and it was too short, even fully extended, to connect on both ends.
Which shaft has the shortest front section? I'm looking to mellow out my driveshaft angle as much as possible to try to match my pinion angle without buying new parts (adjustable UCAs) if I don't have to. I realize I'm not going to be able to compensate for 10º, but extending the length of the shaft will help some anyways.
The thread says I need the shift tab off the new transfer case. If the one I buy doesn't have one, and I get an NP242, is that tab the same as the one on my old NP231?
The "Mall Crawler" - 1998 ZJ Grand Cherokee 5.2 V8, D44a rear axle, NP242 ESY transfer case swap, 4.5" Rough Country lift, Up-Country skids, 31x10.5x15 Destination M/T, future mods planned.