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Old 04-20-2014, 02:23 PM   #11 (permalink)
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clank - '99 jeep tj sport
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Quote:
Originally Posted by oldtamiyaphile View Post
My black TJ is on 31's and used solely for off roading, still returns 20MPG.
do you have the factory bumper on your tj? do you have the plastic pieces that fill in the gap between the bumper and the fenders?

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Old 04-20-2014, 04:31 PM   #12 (permalink)
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Quote:
Originally Posted by Miller88 View Post
I could piece something together from a junkyard,
Taurus fans are as good/better than any aftermarket unit.

My V2500 on 37's gets 12
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Old 04-20-2014, 09:36 PM   #13 (permalink)
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UFI - '12 Fiat 500 Twinair
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Quote:
Originally Posted by baldlobo View Post
do you have the factory bumper on your tj? do you have the plastic pieces that fill in the gap between the bumper and the fenders?
Yes, factory Euro gap fillers, factory alloys and hard top. I want an aftermarket bumper, but don't want to kill what aero there is to do it. Will be ordering a AEV highline kit soon though.
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Old 04-21-2014, 01:46 AM   #14 (permalink)
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The clutch fan on my diesel was working properly and when I swaped in electrics I picked up about 2mpg.
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1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
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Old 04-21-2014, 08:57 AM   #15 (permalink)
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I have considered the Taurus fans as well. I like the simplicity of the mechanical fan. Even if it does use up a bit of gas.

The stock 130A alternator is at it's limit now. Plus, being 14 years old ... not sure how much more it can take.

I have even heard of people gaining gas mileage from getting new battery cables.


Quote:
Originally Posted by oldtamiyaphile View Post
Yes, factory Euro gap fillers, factory alloys and hard top. I want an aftermarket bumper, but don't want to kill what aero there is to do it. Will be ordering a AEV highline kit soon though.
I have a bumper that weighs > 100 pounds (it takes two people to move it). 3/16'' steel with very long unibody tie in brackets. No noticeable fuel economy change.

Quote:
Originally Posted by oil pan 4 View Post
The clutch fan on my diesel was working properly and when I swaped in electrics I picked up about 2mpg.
The Cherokee fan is only around a foot or so. Not huge like on normal vehicles haha. The radiator is super small
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Old 04-21-2014, 11:22 AM   #16 (permalink)
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Switch running lights and brake lights to LED, that saved me from having to get a bigger alternator.
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Old 04-22-2014, 09:50 AM   #17 (permalink)
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I'm also considering trying to find some coroplast and making a removable belly pan for it. It goes off road , so a non-removable belly pan wouldn't last too long.
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Old 04-22-2014, 10:01 AM   #18 (permalink)
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UFI - '12 Fiat 500 Twinair
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Jeep - '05 Jeep Wrangler Renegade
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90 day: 30.12 mpg (US)

Prius - '05 Toyota Prius
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Premodded - '49 Ford Freighter
90 day: 13.48 mpg (US)

F-117 - '10 Proton Arena GLSi
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Mitsubishi
90 day: 37.82 mpg (US)

Ralica - '85 Toyota Celica ST
90 day: 25.23 mpg (US)

Sx4 - '07 Suzuki Sx4
90 day: 32.21 mpg (US)

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Quote:
Originally Posted by Miller88 View Post
I'm also considering trying to find some coroplast and making a removable belly pan for it. It goes off road , so a non-removable belly pan wouldn't last too long.
Unless you fair in the live axles it won't help. An airdam should work though.

I used to joke that I should tow the Jeep to the trails with a turbo diesel van. Now I actually have a TDi van that returns 40MPG it would be a great way to make the Wrangler more efficient
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Old 04-29-2014, 06:47 PM   #19 (permalink)
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XJ Cherokee - '00 Jeep Cherokee Sport
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I have been consistently getting over 20MPG! Pretty surprising, considering even when the Jeep was smaller I would get about this ... when I installed the Grand Cherokee fan clutch it dropped to 14.

Just filled up today and got 20. Unfortunately, it was at a different pump that didn't click off. It spilled out a bit and the gas gauge is pegged about 1/4 tank past full. Would have been a bit over 20 had I went to the normal place I go.

I am trying to see what happens if I go to ethanol free 93 again.

The last tank of gas I finally managed to figure out the driveline vibrations. To test, I took the Jeep to help a friend with his Jeep and ran about 70 miles on the highway at 70MPH. I don't think getting 20 for the tank was bad considering it's a tractor engine propelling a lifted brick down the highway!

I would like to do the injector swap and replace 02 sensors.

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