LD1
Epic Contributor
Is it fair to say you dont like the ~5 - 8ish liter 2-cylinders of 6-7 decades ago?There would be a performance difference when it comes time to actually do the work. Given proportional sized cooling systems, the larger displacement engine should run cooler. Heat kills engines and bolted-on engine components.
So when the rubber hits the road (or the plow gets dropped into the soil, the bush hog gets pulled through heavy brush) the bigger displacement engine will run cooler and last longer. You can work it harder in the field.
Some things cannot be explained with paper statistics. They just are a certain way a tractor feels when you drive it. In a tractor, I would prefer noticeably more displacement of a bigger engine over a smaller displacement engine, even if the smaller engine had a little more power.
I’m skeptical of these smaller 4-liter-ish, 4 cylinder engines I’m seeing in 100-150HP tractors. I don’t think they are going 10,000 hours. I greatly prefer a 6 cylinder over a 4 cylinder, too. The longer crankshaft and 6 smaller holes firing give me more confidence than a short crank and 4 holes firing.
You are questioning the 4-ish liter 4-cylinders......the deere 4.5 is a pretty tried and true engine and runs from 85ish HP up to 135 or 140. And I wouldnt consider a 4.5L small for a 4-cylinder. Probably one of the larger modern ones before they jump to 6+ cylinders?