IH D310 Question

fordfx413

Member
I'm overhauling a D310 engine out of a 756 right now. It is my first time in a D310. When I tore it down I marked on my sheet "rod and cap number towards the pump side of engine". My junk IT manual says "connecting rod and cap and that cylinder ID numbers on rod and cap are in register and face towards the camshaft side of the engine" So I'm confused now after reading the manual unless I was backwards when I wrote it down. Which way do the rods face? Does the flat part of the rod face towards the cam side or the pump side? Also what is the sleeve and piston protrusion spec? Thank you!
 
The flat spot on small end of rod goes toward camshaft. The sleeve flange height above block is pretty much standard like all the wet sleeve engines at .003 to .005 and I would say, closer to .003 is best and all be very close to the same.
When you come to piston protrusion, that gets pretty sketchy as original manual shows no specifications.

A service bulletin for the use of a thinner head gasket list the maximum piston protrusion over the top of the block at 0.5 mm. That being the maximum height that the piston could protrude and be able to use the thinner head gasket , which in reality is no longer available anyway.

I hope you are aware that a high compression piston is available. That piston makes those engines start and clean up tremendously better. I would not even consider the standard ones if it was me. You need to retard the timing two degrees and turn in the fuel screw just enough to eliminate excess black smoke. No other modifications needed. Original timing is 14 degrees before top dead center. Your pump may be 12 now due to normal wear in gear train .
 
Thank-you for the information. I have been dry fitting my sleeves and I'm getting .006 sleeve protrusion on all cylinders. They are all very close to each other. All my decks are clean. Will that .006 be too much?
 
Did I say I hate these parts a guy gets now days. Friend of mine, mechanic, had .008 on new sleeves in a Farmall 300. Well, it leaked coolant immediately. I happened by when he had the head back off and measured the sleeve flange height. I told him, that is just too much. His choices were, different sleeves which he had already run this engine. Next, he could cut counter bore, not fun, cut sleeve flange, even less fun. He stripped it down and had the block resurfaced with sleeves installed. Problem solved for this time.

I don't remember, and haven't looked at pictures in book, but most diesels have a fire dam on sleeve so you could not do that if you wanted to if they have it . Allis Chalmers used to resurface the blocks with sleeves installed as kind of a normal thing I was told, never had much to do with them.

Now, as far as .006, in my opinion that is too much. I am sure others have installed them that way as they didn't check flange height. Could explain a lot of head gasket problem people seem to have though.

Case had so much trouble with flange counter bore, they had a mandatory tool to resurface them but IH never had one. Would have been handy a few time.

I don't have a good answer except , I think it is asking for trouble with that much height.
 
I agree with you Pete. Sucks but I will call the machine shop on Monday. Just wanted to get another opinion. Another issue I ran into... I got 2 sleeve O-rings with my kit one is thicker than the other. The block I have came from Abilene machine years and years ago. Not sure what machine my block came out of and neither does Abilene. I measured the groove in the block and the measurement was .250" I'm not really sure what o-ring to use. The old o-ring I pulled out was .205. Anyway to determine which one to use? Thank you for your help
 

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