Extra Horsepower 560 Diesel Can of Worms

Man I am buffaloed, idiot greenhorn here pondering the HP Dilema. Why does a 560 with a 282ci diesel engine, who it appears shares the same engine with a 656,660, some 706 only have 60ish hp and run at 1800 rpm when its cousins are running the same engine at 2400 rpm and getting 80hp out of it. Are they turned down because of hte drive train not being able to take the extra HP?? My dad has a 1963 560D and I am going to be purchasing one from my FIL. We are both wanting to get a little more power from them mainly for cutting pasture with a larger mower. They seem to pull down quite a bit in this heavy humid pasture. How easy is it to have them turned up to put out the 2400 rpm and 80hp, will a pump from a 660 or 706 just bolt on??

thanks,

Robert

I owned both a 560 and 656 diesel in my day. I can tell you those 282 engines that operated at a goverened max. rpm of 2,000 and max. 65 hp, gave many more years of trouble free service than the ones that were cranking out 75+hp at 2,300 rpm. I can also take you back to the C-113 and C-123 engines in Farmalls A, SA, 100, 130 and 140 versus the same engines in C, SC, 200, 230 and 240. Great power source for that first group being the offsets. They didn't have enough for the larger second group.

I dare say if you find the right technician, he can crank 250 hp out of your 560. It's 45+ years old now, thus it will probably blow up within a month at 250 hp. If your going to spend those kind of dollars, you may as well buy a larger tractor and be done with it. Why in hell be mucking around in grease and oil all the time.

You should bear in mind that the extra 600 rpm of the 660 is compensated through the planetary hubs. That means the extra 20 hp flows through what is essentially the same gear train, up to the axles, as the 560. There may be a ratio somewhere that is slightly changed. The IPTO is one and the differential may be another. I would be more concerned with the radiator. The 660 radiator is three inches taller.

I will save that for the winter project, I will follow up with a request for the adjustments when i get closer to it. good info to know though.