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-   -   244 miles on a full tank of fuel (http://www.wranglerforum.com/f218/244-miles-on-a-full-tank-of-fuel-241505.html)

Billmummey 05-09-2013 09:25 AM

244 miles on a full tank of fuel
 
I found out at 445 this morning that I can only go 244 miles on a tank of fuel in my yj with a 4.2 and 33" tires

sevenservices 05-09-2013 09:33 AM

oh no! doesn't sound like a happy ending!

Make sure you don't have any brakes dragging and that your tires are all aired up. A low tire can cause a lot of uneeded drag wasting 2-3 miles per gallon.

Aside from that, I'm not sure whats normal...

Tdog02 05-09-2013 09:35 AM

You're a brave man. I get nervous at 210 because running out of gas is how a lot of horror movies start.

Billmummey 05-09-2013 09:46 AM

I think my rear brakes are dragging I can feel it when I let off the gas... Changing those this weekend, I've only had the jeep for 3 weeks and the previous owner told me about 280 per tank since there is no fuel gauge.... Here's the great part of the story, somehow my alarm clock got set an hour early so all my coworkers I called were still in bed, good think I havnt had the jeep long enough for my girlfriend to hate it and be jealous yet cause she rescued me

Willybusmc 05-09-2013 09:50 AM

My 95 gets 170 miles on a tank tops. It's a 2.5

With an 11 gallon tank

Billmummey 05-09-2013 09:52 AM

Mine is 20 or 21 gallon

wrangleryj90 05-09-2013 10:33 AM

I get 300-350 miles out of a tank with my 2.5l and 30's although I put 33's on for the trails they cost me to much to buy and hurt my gas mileage to much

reno92 05-09-2013 11:36 AM

FYI if you have not changed your speedometer/odometer gear for those 33" tires you actually have somewhere between 270-280 miles + on that tank, not what you're showing on the odo. You should add at least 10% to your MPH and MPG's running those tires. This is assuming the speedo gear has not been changed.

AllMudd 05-09-2013 11:58 AM

Quote:

Originally Posted by Willybusmc (Post 3736838)
My 95 gets 170 miles on a tank tops. It's a 2.5

With an 11 gallon tank

I have a 95 YJ S (base model) and it has a 15 gal tank. I was unaware that they even made a smaller tank. IMO you might want to check out why you only can get 11gal at a time.

Billmummey 05-09-2013 12:20 PM

Quote:

Originally Posted by reno92 (Post 3737188)
FYI if you have not changed your speedometer/odometer gear for those 33" tires you actually have somewhere between 270-280 miles + on that tank, not what you're showing on the odo. You should add at least 10% to your MPH and MPG's running those tires. This is assuming the speedo gear has not been changed.

I forgot about that, your righty speedo is off because of the tires so I'm probably getting better mpg than I thought

Matt10 05-09-2013 12:24 PM

I have a 4.0 manual and I get like 210. With 31s

GrkYJ 05-09-2013 12:59 PM

Matt10- I'm with you, 93 4.0 manual with 31s get between 210-225 mpt. I wish I would get 300

p0larb3ar 05-09-2013 01:34 PM

2.5l 5spd with 31" tires on about 1.5" of lift and I always fill by 150, and I normally only put 10-11 gallons at that point. In theory I have the 15 gallon limit still on

Fredzo 05-09-2013 05:41 PM

That's why we carry Jerry Cans! :whistling:

Billmummey 05-09-2013 07:08 PM

And here comes the old wise man.... Hahaha ya I need to find mine and get some way to mount them

sinbob 05-09-2013 07:23 PM

I have a 19 gal tank. I usually get about 220 to 240 miles per tank. Just depends on how I am handling the skinny pedal. 4.0, 6sp on BFG 35's with 4.88's

Billmummey 05-09-2013 07:28 PM

I wonder how many different size tanks they offered, I just put 18gal in to fill it up and when I ran out this morning I put 4 gal in and I've only gone 6 miles since I out the first 4 in it

0III0forlife 05-09-2013 09:19 PM

Actually if you want to get technical, they only offered 1 size of stock tank. Meaning the actual size of the fuel tank, outer dimensions, is the same. The gals that they hold would be either 15 or 20. The only difference between the 2 tanks is the length of the vent tube that goes down into the tank.

I have the 4.2L currently on 33's and get somewhere in the neighborhood of 180 for a 20 gal tank. But i guess i should say that i have an Offenhauser intake with a Holley 390 4bbl. And to make matters worse, I very rarely keep my foot off the skinny pedal. Love to hear that throaty roar coming from the snorkel when the Holley needs lots of air cause the skinny pedal is out by the radiator!...lol

reno92 05-09-2013 09:46 PM

What he said^
From what I hear 91-95 YJ's all came with 20 gallon tanks but differant filler necks and sending units that only allowed some to use 15 gallons. I read you can fix this very easy and have a full 20 gallon tank, but the sending unit will show overfull and not begin to move till the extra 5 gallons are used. Read this
Wrangler YJ Gas Tank Modification 15 to 20 Gallons

Jeep_Monkey 05-10-2013 12:35 AM

94, 2.5L, 5 speed manual, 31" tires, 4.56 regeared, throttle body mod, mustang fuel injectors, electric fan, mean green alternator, flokooler water pump

One of my first mods was the 15 to 20 gallon mod. So I can put a smidge over 20 gallons in if I run it dry. I did not swap out sending unit so fuel guage stays pegged high for the first 5 gallons.

Mileage varies from 12-15 mpg in town with stop and go driving, 15-18 mpg driving on the highway at 65-75 mph, to a high of 23 mpg driving easy trails / backroads around 40 mph.

Speedometer is reasonably accurate compared to gps.

Aside from different driving conditions, I find that mileage is significantly impacted by the configuration of the top and weather conditions. I have a soft top, so I have no way to compare it to hard top. Worst mileage seems to be totally topless. Full top with doors and windows is better. Running sahara mode (soft top with side and rear windows removed) is best mileage configuration for me.

Of course, wind direction can help/hurt too. Drove from dallas to austin a few weeks ago into a 20 mph headwind. Aside from feeling like I was swimming upstream, it had a big impact on mileage... About 10 mpg that trip.

Fishb0wl 05-10-2013 01:04 PM

I average 10-13mpg with my 4.0 auto with 33" running 4.10s

I get nervous around 130-140 miles even though my gauge shows 1/4-1/2 left. However the gauge doesn't start moving until after 80-90 miles but then drops quickly so I've got no clue if the PO did the 20 gal tank mod or if my fuel gauge is messed up lol

I've been tempted to run it until its empty and have an extra fuel can just to see how far I get.

AllMudd 05-10-2013 01:31 PM

Quote:

Originally Posted by Jeep_Monkey (Post 3739962)
94, 2.5L, 5 speed manual, 31" tires, 4.56 regeared, throttle body mod, mustang fuel injectors, electric fan, mean green alternator, flokooler water pump

One of my first mods was the 15 to 20 gallon mod. So I can put a smidge over 20 gallons in if I run it dry. I did not swap out sending unit so fuel guage stays pegged high for the first 5 gallons.

Mileage varies from 12-15 mpg in town with stop and go driving, 15-18 mpg driving on the highway at 65-75 mph, to a high of 23 mpg driving easy trails / backroads around 40 mph.

Speedometer is reasonably accurate compared to gps.

Aside from different driving conditions, I find that mileage is significantly impacted by the configuration of the top and weather conditions. I have a soft top, so I have no way to compare it to hard top. Worst mileage seems to be totally topless. Full top with doors and windows is better. Running sahara mode (soft top with side and rear windows removed) is best mileage configuration for me.

Of course, wind direction can help/hurt too. Drove from dallas to austin a few weeks ago into a 20 mph headwind. Aside from feeling like I was swimming upstream, it had a big impact on mileage... About 10 mpg that trip.




Mustang injector mod? Is there a thread on this? What's the year, eng that the injectors are needed from?

Billmummey 05-10-2013 02:40 PM

I happen to have mustang 5.0 injectors for sale

Duckquackers 05-10-2013 02:53 PM

I get about the same with my 2013 MOAB. Average is about 12

bigb996 05-10-2013 03:41 PM

244 is very good mind gets less with the same motor. I do need to rebuild the carb and regear though.

p-nut 05-10-2013 04:15 PM

Im picking up an 89YJ with a 20 gal tank, a new chevy 350, 4" lift and 33" tires.

I don't know what gears it has.

what do you think the MPG will be? :D --- my guess, I will be surprised and it wont be as bad as I think.

wrangleryj90 05-10-2013 04:29 PM

Quote:

Originally Posted by p-nut (Post 3742019)
Im picking up an 89YJ with a 20 gal tank, a new chevy 350, 4" lift and 33" tires.

I don't know what gears it has.

what do you think the MPG will be? :D --- my guess, I will be surprised and it wont be as bad as I think.

My guess would be about 16-18

p-nut 05-10-2013 05:13 PM

Quote:

Originally Posted by wrangleryj90 (Post 3742050)
My guess would be about 16-18

I will be really happy if I get that much.

RednekYJ 05-10-2013 05:21 PM

89 2.5 4.56's 33x12.5x15....


I scored 15mpg(178miles 11.9gallons) on my last tank making short trips(10 miles or less). My tank is stock 14.5gallons so in theory 210miles should be obtainable. Ill have to test that theory one day...

tigerblood 05-10-2013 07:38 PM

Quote:

Originally Posted by Fishb0wl (Post 3741363)
I average 10-13mpg with my 4.0 auto with 33" running 4.10s

I get nervous around 130-140 miles even though my gauge shows 1/4-1/2 left. However the gauge doesn't start moving until after 80-90 miles but then drops quickly so I've got no clue if the PO did the 20 gal tank mod or if my fuel gauge is messed up lol

I've been tempted to run it until its empty and have an extra fuel can just to see how far I get.


Ive got the same drivetrain as you, and basically everything you said goes for me also, except I can run my gage down to empty before I fill up without problems. I dont have the 20 gal mod done, but according to my build sheet is came with the 20 gallon tank.


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