View Full Version : NP-231

07-26-2007, 05:36 PM
Anyone know of a 231 for a 4cyl TJ kickin around? I need one desperately. Also need the front DS too!

07-29-2007, 09:02 PM
FWIW, what are you trying to do with it? The different trannies have different outputs, so the splines might not match.

Otherwise all the 231Js are basically the same... Some have a different setup for the vacuum harness for some fuct reason.

07-30-2007, 09:35 AM
well, trying to replace the one in my friend's TJ that literally exploded on the highway. I tried using a 21 spline from an 89 YJ 4cyl, but it's different. It has 4 mounting bolts, instead of 6, uses a mechanical speedo cable, instead of an electric one for the TJ.
Also the tailshaft is way different. I don't think it's gonna work at all.