LsFarm wrote:I had a JD 430, 2cyl upright engine, a '59 model, I had a 6' ford Flail mower on it, a real HP HOG.. the engine was rated at 29 or so HP..
When the grass was tall, it would not pull the slight slope in my back yard, I'd have to lift the mower to lighten the load. I'd have to run
the engine at full throttle all the time to pull the mower,
So, I bought an 'early '80's JD 855, a stick shift, 3x3 speed, live pto, and mid pto 4x4 tractor, Power steering, syncro on all gears.
The engine is a Yanmar Diesel, rated at ~28 hp..
Those 430's were sure gas hogs. I remember when we had one for raking hay, the guys were always running out of gas with that thing! Instead of calling it a put-put like most poeple my dad called it a quart-quart...one quart of gas to fire each cylinder,
Something else to consider, over the years a lot of tractors switched from a gross flywheel HP rating to a NET rating or PTO horsepower rating. Also, the newer tractors had less HP loss in the drivetrain. There is no doubt that a diesel with the same PTO horsepower rating will have more useable torque across the RPM range, but I think there was more variables than just gasoline vs diesel in the comparison above. With that said, I have always preferred mechanically-controlled diesel equipment...but you can keep the EGR valves, particulate filters, and "blue juice".