1998xjspt

How do I tell if my front D30 axle is low pinion or high pinion type D30? And can a C8.25 be LP or HP also? If so how can I tell? If it's an LP, how can I convert it to HP?

Thanks

tvarney26

you want a hp and you can tell by the front axle on the back your front drive shaft connects to your pinion yoke and turns ur pinion if it is at the top of the pumpkin you have a hp d30 if it sits near the bottom of the axle housing you have a lp

tvarney26

you can easily direct swap out a hp from another cherokee but if u got a 98 i dont think u have a lp

tvarney26

i think the lp years are 2000 to 01

tvarney26

tvarney26

low left high right

1998xjspt

sweet! thanks guys, yeah i have an HP

no rdplz

Yup, 98's have the HP. '00-'01's are t he only XJ's to come from the factory with the LP D30.

As for the 8.25, the only change made was spline count, from 27 to 29, in '96/'97. All 8.25 have the same pinion placement.

1998xjspt

Oh okay cool soo I got 29 spline. And why would jeep put LP on the front D30??

evan00xj

Most 00-01 models have 2 extra front catalytic converters. The low pinion clears the exhaust. Good ol CA emissions stuff.

gpXJ

They did it because they were ending the Cherokee line in 2001 so instead of making more separate high pinion d30's, they just used the low pinions they were putting in the tj's. I have a 2000 and swapped in a high pinion and there are no clearance issues with my exhaust.

evan00xj

Previous owner of mine swapped in a high pinion on my 2000. I cant even put on my front driveshaft dude. It scrapes like crazy... even being lifted 4 inches and with the front ds off. Its the cats man.

1998xjspt

strait piep dat bihh

evan00xj

Lol that would be ok, problem is what am i supposed to do with 4 o2 sensors? ?? Not that easy man

gpXJ

Really? Maybe the PO redid the exhaust in a dumb way? I'm at 4.5" and my exhaust isn't even close. And my XJ was originally sold in DC so its all cali'd up. I've never heard of anyone having an issue like yours.