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Old 12-02-2012, 03:56 PM   #1
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Tj engine question

What is better for offroading the stock 2.5l or a stock 4.0l just wondering because I have heard the 2.5l has a lot of torque

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Old 12-02-2012, 04:48 PM   #2
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This is going to open a can..

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Old 12-02-2012, 09:14 PM   #3
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This is going to open a can..
?
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Old 12-03-2012, 10:33 AM   #4
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?
Of worms......the responses will likely pour in..LOL
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Old 12-03-2012, 11:16 AM   #5
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hmm i would think the 4.0 because of higher horse power. seems like more horse power would put out more torque. Based off stock gearing.
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Old 12-03-2012, 11:39 AM   #6
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Always opt for more available horsepower. It's there when you need it.
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Old 12-03-2012, 11:56 AM   #7
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Someone told me that the loss of hp is offset by the gearing, the lighter, weight, and the weight being set further back on the 2.5l
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Old 12-03-2012, 11:57 AM   #8
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Says the guy with the 2.5l
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Old 12-03-2012, 12:18 PM   #9
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HP= TQ*RPM/5252

HP is a USELESS number, period. Regardless of the application the important data is the slope of the TQ curve, where the peak is in relation to RPM+gearing, and the total area under the TQ curve. Everything else is the wool they pull over your eyes to sell you something.

The "better" engine is the one that gives you what you need, where you need it, for what you use it for.
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Old 12-03-2012, 12:29 PM   #10
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The 2.5L is a beast in 4Lo.
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Old 12-03-2012, 12:41 PM   #11
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How about a show of hands. Who here with a 4.0 wishes they had a 2.5 instead?
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Old 12-03-2012, 01:13 PM   #12
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How about a show of hands. Who here with a 4.0 wishes they had a 2.5 instead?
Lol, easiest way to get an actual answer..
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Old 12-03-2012, 01:14 PM   #13
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the 2.5l is a beast in 4lo.
x2
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Old 12-03-2012, 02:10 PM   #14
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says the guy with the 2.5l
lol
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Old 12-03-2012, 02:19 PM   #15
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It depends what type of off-roading you do. For mud bogging, you'll want lots of wheel speed and need lots of horsepower, so you wouldn't want anything less than the 4.0L. For general trails and even rock crawling, the 2.5L does very well--partly due to weighing 200 pounds less than an equivalent 4.0L, partly due to its slightly more aggressive axle gearing from the factory.

I have owned multiple examples of both engines, and I have wheeled and rock crawled them all. (I never mud bog.) The only time I have found a 2.5L lacking was when climbing steep hills on the freeway. On the trail, I had no complaints at all about the 2.5L.
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Old 12-03-2012, 02:19 PM   #16
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How about a show of hands. Who here with a 4.0 wishes they had a 2.5 instead?

Hey, the only possible thing worse than owning a 4.0L is getting passed on a trail by 2.5L. Just sayin.



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Old 12-03-2012, 02:54 PM   #17
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4 cylinder geared properly is great for wheeling. The only time you really appreciate the 6 cylinder is highway speeds. I have had both and I need the 6 cylinder for I drive on the highways and also pull a small motorcycle trailer which I would not attempt with a smaller engine.
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Old 12-03-2012, 09:20 PM   #18
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Sure the 2.4/2.5 weighs less, and is cheaper, but if you have the cash I'd say get a 4.0. You may not need the extra power, but it can't hurt.

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