Hi Philip, cannot comment on newer models 4 cyl vs 6 cyl but I know what happened to two neighbours several years ago. One had IH 656U Diesel 6 cyl D-282(not turned up) and the other had IH 684 D-239 with T/A turned up to 70 HP PTO on the Dyno. The neighbour with 656 used to chop the neighbor with 684 silage each fall with NH Super 717 chopper. Neighbour with 656 retired from farming and sold NH chopper, blower and wagons to neighbour with 684. The 684 would run the chopper OK on the level but if there was a hill in the field and a partial load in the wagon the 684 had to pull the T/A where as the 656 chopping the same field would have just blown a bit of smoke and continued. Neighbour traded 684 for CIH 4230 D-268 Diesel with over 70 HP.
Conclusion the 6 cyl had more lugging power than the 4 cyl of same HP range.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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