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Old 07-01-2013, 08:19 PM   #1
bustedknuckles's Avatar
Join Date: Jun 2013
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4 or 6 cyl

Is there a motor that I should stay away pros and cons. Looking to purchase a jeep is appreciated the advice.

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Old 07-01-2013, 08:34 PM   #2
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Other than a cheaper initial purchase price a 4 cylinder has no other real advantage over the 6. Get the six.

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Old 07-01-2013, 08:36 PM   #3
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I have the 4.0 and love it. It's a pig for oil, but the low end torque is awesome. Gas mileage isn't as good as the 2.5L motor, but I'd rather have the power.

You better be ready though, you opened a can of worms with this one...
If it doesn't move and it should, WD-40. If it does move and it shouldn't, duct tape. A lot of duct tape.
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Old 07-01-2013, 08:40 PM   #4
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No advantage to the 4 banger other than price. The 6 is the way to go.
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Old 07-01-2013, 08:48 PM   #5
Knows a couple things...

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For most offroading, the 2.5L four-cylinder engine is fine but it sucks for the highway & even around town. I'd go for the 4.0L engine, especially since the 2.5L's fuel economy isnt much (if any) better than the 4.0L's is.
When you have a choice, buy American.

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Old 07-01-2013, 08:48 PM   #6
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If you plan on a lot of highway driving and/or you want to run much bigger tires, you would probably prefer the extra power of the 4.0 inline six that was used all the way through the end of TJ production which ended in 2006. The 2.5 four cylinder, which is just a smaller, less powerful version of the 4.0, was used through the 2002 model year. It is great for off-road or In-town driving as long as you don't run much bigger than a stock size tire. Both engines are extremely durable and have good low-end torque. The 2.4 four cylinder in the 2003-2006 TJ models is a different engine than the AMC-based engines mentioned earlier. It makes more horsepower than the 2.5, but I can't speak about the durability of that one because I have never owned one. If you can decide what you will be doing with the Jeep (lift, tire size, other planned mods, where you will be driving it, etc.), it will help you decide which engine you would prefer. You can usually buy a four cylinder TJ cheaper than you can a six cylinder. They might get a little bit better gas mileage than a six cylinder, but not a great deal better. Jeeps don't get very good gas mileage anyway, so just be aware of that from the start.
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Old 07-01-2013, 09:08 PM   #7
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