Gears?

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Jul 13, 2013 | 04:08 PM

#16

salad

Herp Derp Jerp

Joined: Nov 2011

Posts: 18,251

Likes: 17

From: Parham, ON

Year: 1999

Model: Cherokee

Engine: 4.0L OBD-II

Quote:

Originally Posted by karl4x4

Really? are you sure? [eyes rolling]

I have no doubts your testing in your situation has given great results. But if you think 2500 RPM on a stock XJ is going to net better highway fuel economy than 1900 RPM you've got to re-evaluate a few things. lol

Jul 13, 2013 | 04:33 PM

#17

karl4x4

Senior Member

Joined: May 2013

Posts: 541

Likes: 1

From: Vancouver

Year: 1998 and 1988

Model: Cherokee

Engine: 4.7

Quote:

Originally Posted by salad

Ive been re-evaluating that jeep for the last 23 years and 513 000km. believe me, under load (like big tires) 2500rpm is by far the best RPM for economy and oil consumption.
Anything below 2000rpm and you are just working unnecessarily.

Not an argument or an opinion, just facts...

Jul 13, 2013 | 06:28 PM

#18

salad

Herp Derp Jerp

Joined: Nov 2011

Posts: 18,251

Likes: 17

From: Parham, ON

Year: 1999

Model: Cherokee

Engine: 4.0L OBD-II

Quote:

Originally Posted by karl4x4

under load (like big tires) 2500rpm is by far the best RPM for economy and oil consumption

...not for a stock XJ like jburr94xj's

Jul 13, 2013 | 10:12 PM

#19

WestyXJ

Junior Member

Joined: Dec 2011

Posts: 75

Likes: 15

From: Westminster, CO

Year: 2001

Model: Cherokee (XJ)

Engine: 4.0l

V-6 KJ's with the auto trans have the c8.25" with 29 splines and 3.73 gearing.
Not sure if everything else is the same for a swap to match your front gearing.