north puller
Member
I just bought a farmall 656 with a d301 from a combine installed.
This engine sat around a while, and seems to be in fair condition. Good at best. It burns a touch of oil, the head gasket weeps a little to the outside, and it has a decent amount of blo by.
Glow plugs all work, but any less than 1:45 of glowing and it"s a very grumpy starter. 2:00 or more and it starts up very clean.
Anyway, the motor seems week. I turned the pump up enough to get some black smoke. On the dyno at 2100 rpm (620 pto), it pulls 73 hp. But any lower than 2000 rpm and it falls on its face. If I pull it down to 1800 rpm (540 pto), it only makes 63 hp.
A friend of mine has a 656 with the correct d282, and it is much stronger at or below the rated 1800 rpm than my 301 is.
Was the combine engine"s cam different, or is everything to do with the higher speed in the pump?
Is my engine week down low because of the combine fuel pump, or just because it"s tired?
This engine sat around a while, and seems to be in fair condition. Good at best. It burns a touch of oil, the head gasket weeps a little to the outside, and it has a decent amount of blo by.
Glow plugs all work, but any less than 1:45 of glowing and it"s a very grumpy starter. 2:00 or more and it starts up very clean.
Anyway, the motor seems week. I turned the pump up enough to get some black smoke. On the dyno at 2100 rpm (620 pto), it pulls 73 hp. But any lower than 2000 rpm and it falls on its face. If I pull it down to 1800 rpm (540 pto), it only makes 63 hp.
A friend of mine has a 656 with the correct d282, and it is much stronger at or below the rated 1800 rpm than my 301 is.
Was the combine engine"s cam different, or is everything to do with the higher speed in the pump?
Is my engine week down low because of the combine fuel pump, or just because it"s tired?