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  #16  
Old 04-25-2011, 06:22 AM
FireRanger FireRanger is offline
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Default Re: Is it possible to change the axle ratio without screwing up the emissions?

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Originally Posted by wilsonbh View Post
I have a 2000 Ranger (v6) and I am very unhappy with the gas mileage. Seems to always get about 21mpg, or less.
You're getting better mileage than most people. You have an 11 year old pickup truck, not a Honda Civic.
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  #17  
Old 04-25-2011, 08:06 AM
wilsonbh wilsonbh is offline
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Default Re: Is it possible to change the axle ratio without screwing up the emissions?

Yes, perhaps but I know of one guy that went from 21mpg to 34mpg by changing out his gears on the rear end. I'm willing to do the same thing if that meant a 10mpg increase. That essentially is a free tank of gas for every two tanks filled. At these gas prices, would pay for itself in about 3 months, or less.
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Old 04-25-2011, 08:11 AM
FireRanger FireRanger is offline
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Default Re: Is it possible to change the axle ratio without screwing up the emissions?

That one guy is full of shit. The only way a 3.0 or 4.0 ranger is getting 34mpg is going down hill with your foot off the gas.
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  #19  
Old 04-25-2011, 08:19 AM
DiabloBlanco DiabloBlanco is offline
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Default Re: Is it possible to change the axle ratio without screwing up the emissions?

I swapped my axle to bigger gears. No problems with emissions. And no noticable differance with MPG maybe a little better.
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  #20  
Old 04-25-2011, 08:50 AM
pooleo pooleo is offline
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Default Re: Is it possible to change the axle ratio without screwing up the emissions?

changing out to the 3.73 is a good move I think. I have 4.10's in my '01 and its getting about 17~18 mixed city/hwy. But thats only driving at 60 on hwy. 70 runs at 3k, but I do have smaller tires on and the proper size would bring that down. I swapped from 3.27 to 3.73 in my plow truck actually mileage stayed the same, I think that it was lugging to much with the 3.27 sucking fuel, and now, its using to much as its not lugging anymore. But, I have a shit load more bottom end for plowing which is what I wanted. anyhow, if you are pulling around 16-19 mpg with your 3.o and 4.10's thats really not bad. You have an 8.8 or 7.5...? I have a set of 3.73 from my dads 7.5, we swapped his out to 4.10
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  #21  
Old 04-25-2011, 09:03 AM
01_ranger_4x4 01_ranger_4x4 is offline
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Default Re: Is it possible to change the axle ratio without screwing up the emissions?

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Originally Posted by wilsonbh View Post
Yes, perhaps but I know of one guy that went from 21mpg to 34mpg by changing out his gears on the rear end. I'm willing to do the same thing if that meant a 10mpg increase. That essentially is a free tank of gas for every two tanks filled. At these gas prices, would pay for itself in about 3 months, or less.
no way would that ever be possible with any V6 ranger. hell thats a stretch with the 4 cyl duratec. that guy that told you that is on drugs. be happy with the mileage you are getting now, most would kill to get 21 MPG's with a V6 ranger.
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  #22  
Old 04-25-2011, 09:58 AM
Pietato Pietato is offline
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Default Re: Is it possible to change the axle ratio without screwing up the emissions?

I hit a record last week in the 6 yrs of owning my truck 17.8mpg thats with 3.73s
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  #23  
Old 10-13-2011, 07:41 AM
zekew64 zekew64 is offline
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Default Re: Is it possible to change the axle ratio without screwing up the emissions?

Honestly, I haven't really seen that many people talk about the 2.3L four-cylinders. I get anywhere from 22-25 mpg, but usually I keep the RPMs low in the motor when I shift. However, just throwing my $0.02 out there, I learned while going to school that the way you increase your mpg output is to decrease the overall curb weight. Now, if you weren't running something like 31x10.5s, or some other off-road tire, you could get upwards of 20-22 mpg. But it would also help if you went to two things: a smaller wheel and adjusted the tire pressure so that it would be about 35 psi. Basically, with the smaller wheel and harder tire pressure, you have less inertia from the wheel itself (saving weight) and less rolling resistance (the truck doesn't have to work as hard to get going). Other than that, keep up your maintainance and from time to time, throw some Sea Foam in to clean out your injectors; that always seems to help me with mileage.

----------

By the way, I did an internet search, and found this:

http://www.mpgenhance.com/differential.html
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