I have a 4650 and a 1086. Compared to the 1086 the 4650 does have quite a bit less low end grunt but it isn’t THAT bad. I wonder if in your higher elevation it’s easier to get below the turbo. When we ran 2388 combines in higher elevations they fell flat and smoked coal black when we engaged the separators at a slow engine speed. Back here in Iowa at 1200’ elevation there was practically no smoke and we didn’t have to worry about killing the engine when we engaged the separator.
The only fuel economy records between the 1086 and the 4650 I have to go by is the Nebraska tests. According to the Nebraska tests the 4650 was slightly better on fuel economy. The 1086 was slightly better than the 4640.
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Today's Featured Article - Restoring a John Deere 2010 Diesel Tractor - by Jim Nielsen. Following seven years working in California's Silicon Valley, my wife, baby son and I moved back to Australia to retire. We bought a small 'farm' of about 50 acres near Bendigo, in the state of Victoria. I soon found that it would be very useful to have a tractor around the place for things such as grading our long drive and brush-hogging the fields. I was also embarking on planting 1000 eucalyptus trees, and hence I would need a ripper, small disk plow, sprayer etc. to get these things accompli
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