560 crankshafts

Roger Tomfohrde · Jul 29, 2016

What is the difference between a D 282 crank and a C 263 crank? There must be something because they have different part numbers. The IT manual lists the dimensions and they show the same dimensions for both. Case parts breakdown shows the same gear on the front and the same part numbers for the connecting rods but different bearing numbers, why? I am confused as what IH did to make them different. Is it in the thrust bearing? I know the serial number have a break for the flange diameter.Or is it just they made it heavier for the diesel. I have the diesel crank out and am salvaging the motor which was stuck and was wondering if it would fit in a gas tractor. I don't have a gas crank out to compare it to.
Thanks
Roger

RedRoundhead · Jul 30, 2016

Only thing that I know, is that there were 2 different ways that the cranks were heat treated. One way was the traditional carburize and harden, and then there was the nirtro- carburizing.

The difference is, the carb & harden method creates a much deeper case depth (anywhere from .010 to .040/side), wheras the nitro method only goes about .0008/ side deep. Cannot re-grind a nitro crank, as you loose the hardness. It was called "tuftriding" as well.

I deal with some nitro- carburized parts at work all the time. The case is very hard, with very little distortion.

Not sure if that is the reason for the part # difference you are seeing, or not.

Best of luck.

Owen Aaland · Jul 30, 2016

The difference in the thrust bearing is a change in the block not the crankshaft.

If I recall correctly there are five different crankshaft numbers for those engines. All of them are dimensionally the same. There were used in the C263, C282, C291, and C301 gasoline engines as well as the D282 and D301 diesel engines.

As the other poster noted there was a difference in the hardening process used in the diesel engines. Also the early gasoline crankshafts will break if used in the diesel engine. The latest crankshaft was suitable for use in either gasoline or diesel engines

There was a service bulletin (issued late 70's?) that explained the differences and what shafts were to be used with which engine. It would be nice to have a copy of that SB.

pete 23 · Jul 30, 2016

I see no difference between gas or diesel on bearing sets. Only difference is on thrust main and applies to gas or diesel. Any diesel crank will work in a gas but like others said, the one number cannot be reground. They also fit into a 221 or 236 if new pistons for the longer stroke are added as well. Rods have larger wrist pin in later diesels though.

Roger Tomfohrde · Jul 30, 2016

Thanks everyone..
I took this motor out because there was three stuck pistons and the head is cracked so it will not be going back in and I am looking at other options. I have a gas motor located that might just have a crank problem but have not gone for it yet. Other Ideas are welcome right now.

560 crankshafts

Roger Tomfohrde

Member

RedRoundhead

Member

Owen Aaland

Well-known Member

pete 23

Well-known Member

Roger Tomfohrde

Member

Similar threads