MPG idea
JK Jedi Master
Joined: Feb 2008
Posts: 12,907
Likes: 185
From: Maine
I'm not totally disagreeing with you but what requires more gas eating energy? turning the axles that are in line with the wheels (minimal resistance) or the amount of energy required during the rotation between the ring and pinion to turn the high inertia (heavy) articulating driveshaft.
I'd bet removing the front driveshaft would be good for an MPG or 2 with a non agressive driving style.
Assuming you are not turning, I've often wondered if starting in 4HI to say 40 mph might actually improve MPGs since I was applying equal engine energy to all 4 wheels instead of using two to turn essentially all the same parts less the transfer case gears. Could potentially improve 0-40 times too???
I'd bet removing the front driveshaft would be good for an MPG or 2 with a non agressive driving style.
Assuming you are not turning, I've often wondered if starting in 4HI to say 40 mph might actually improve MPGs since I was applying equal engine energy to all 4 wheels instead of using two to turn essentially all the same parts less the transfer case gears. Could potentially improve 0-40 times too???
It will improve 0-40 time only if the rear tires slip in 2wd, and no tires slip in 4wd, and you have enough horsepower to take full advantage of the extra traction.
JK Enthusiast
Joined: Jul 2009
Posts: 163
Likes: 0
From: Tyrone OK
i just figured most of the resistance came form the ring gear and pinion moving through the thick 80/90 gear oil, til you create a lil heat to somewhat thin it down. Bottom line is it would be nice to have the lock outs, wouldnt get them for the mpg's but it would be nice to saves some wear and tear off the front diff. maybe after i shell my d 30 i look at this option. unless the price goes down thats alot of coin!!!