Gas Mileage with 4.0 on 33's - JeepForum.com

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post #1 of 17 Old 09-12-2005, 10:48 AM Thread Starter
MNKMcNeilly
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Gas Mileage with 4.0 on 33's

Hey guys,

I am new to the YJ thing...just got my first one Saturday (1993). It is currently stock and I have big plans for her. I was thinking about going with 32's but I really want 33's, however it will be a daily driver. What kind of gas mileage are you guys getting with the 4.0 L? 31's and 32's compared to 33's. Thanks for any info.

Matt

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post #2 of 17 Old 09-12-2005, 01:43 PM
H2who
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If you bought ur YJ lookin for good gas mileage then you prob need to sell it. The gas mileage goes from bad to worse when you upgrade to bigger tires.
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post #3 of 17 Old 09-12-2005, 01:47 PM Thread Starter
MNKMcNeilly
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I didn't buy it for the gas mileage per say (I was driving a Ford 460 before). I was just wondering what the difference is. I don't even know what a stock yj gets.
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post #4 of 17 Old 09-12-2005, 02:08 PM
brcfan0142
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I get anywhere from 12 to 15 mpg with my yj with 33X12.50s. So it's not that great, but not too bad.
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post #5 of 17 Old 09-12-2005, 02:19 PM Thread Starter
MNKMcNeilly
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12-15 is better than the 8 I was getting before.
thanks BRC
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post #6 of 17 Old 09-12-2005, 02:44 PM
wm69
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milage will depend on what gears you have and what tranny you have......

85 CJ7 258, borla header, Team Rush, MC2100 ,optima batt, Warn 8274, agr super box 2 & pump, T5 w/ B&M shifter, centerforce 2, superior 1 piece axles, warn hubs 2.5 in lift, 31" BFG MT

85 CJ7 258, A/C, T176, MC2100, Team Rush, Warn XD8000i, superwinch hubs, 3in lift 31" BFG AT/KO
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post #7 of 17 Old 09-12-2005, 02:48 PM
Slapahoe
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im pushing 16.3 MPG with mine, but I have 35x12.50

93 YJ 4.0HO
'03 KJ Renegade
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post #8 of 17 Old 09-12-2005, 03:06 PM Thread Starter
MNKMcNeilly
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I will check out what gearing I have and will post them tomorrow.
Thanks
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post #9 of 17 Old 09-12-2005, 03:08 PM
bono426
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Quote:
Originally Posted by Numba1goalie
im pushing 16.3 MPG with mine, but I have 35x12.50
how????????

2005 WK HEMI QDII 2" BB on JK Rubi Tires. Retro Fitted MyGig
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post #10 of 17 Old 09-12-2005, 04:53 PM
Tshark299
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My friend has a 4.0L/5-speed with 3.07 axle gears and 33x12.5" tires and she gets around 16-17 if she drives relatively conservatively.

'87 YJ Laredo - 4.0L, AX-15, NP231, 4.10s: 3.5" BDS, 31" Muds

'95 XJ - Donated drive train to the YJ, Parted out the rest

'51 CJ-3A - Buick 225 V6: Painless Wiring Harness, Warn Overdrive & Hubs, 2" Lift, 31" Muds
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post #11 of 17 Old 09-12-2005, 04:56 PM
Stangman516
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I have 31s and i get 16-17mpg

i also have a friend who has 33x12.5s and he gets around the same milage.

'95 Mustang GT
'91 YJ 4.0L
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post #12 of 17 Old 09-12-2005, 05:06 PM
azgurney
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4.0 5spd 4:10 gears 33x12.50 = 13.5 mostly around town driving. Slightly more if on hi way but not much. This is normal use, it is not a hot rod.
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post #13 of 17 Old 09-12-2005, 05:37 PM
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Quote:
Originally Posted by bono426
how????????

Well up untill this thread I didnt think it was all that abnormal. I have done countless seafoam treatments and take care of my Jeep very very well. Shes my one and only child after all. I also don't have a very heavy lead foot so of course that always helps.

93 YJ 4.0HO
'03 KJ Renegade
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post #14 of 17 Old 09-13-2005, 11:25 AM
Sugarfuzz
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When you say Seafoam treatments, are you talking about the trick of sucking a bottle of it through a vacuum line? I've been thinking about trying this.
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post #15 of 17 Old 09-13-2005, 01:29 PM
jeepfury
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I am getting about 14-16mpg with a 5 speed 4.0. Mostly around town. Driving it nice definately helps. 33's x 12.50

JOOP

00 Cherokee Classic- Stock
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