Why does 4 low suck so bad in the Xterras?! My TJ, it was so low I could literally just get out and walk alongside it, I could wheel tough rock sections by just letting out the clutch slowly and idling over everything. With the X, I recently went to my mom's house to burn some things and drove up into her backyard, threw it in 4 low and literally could tell no difference at all from 4 high. Is it because the X is an auto? Have to say it was really lackluster, lol...
The Xterra transfer case has a 2.63:1 low range. The standard TJ has a NV231 transfer case with a 2.72:1 low range, which is not significantly different.
The Jeep TJ came equipped with 3.07:1, 3.55:1, 3.73:1 or 4.10:1 axle ratios depending upon the trim level, axle assembly and engine. The TJ Rubicon edition came equipped with the NV241OR transfer case with 4.0 liter straight six, a 4.0:1 low range and 4.10 axle ratios.
Which model jeep did you have? What were your axle ratios? What size tires did you run? You may be comparing apples and oranges. Or, as noted above, you may not have shifted your Xterra into 4 low.
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P.S. - I recently returned from a 10-day overlanding trip in Oregon and just returned from 4 days in Death Valley. My Xterra's low range worked just fine on both trips mated with 3.36:1 axles, 32" tires and automatic transmission.