Yanmar engine help?

bridgeport13b · Feb 9, 2020

Hi I have a ym2000 and I have the engine at machine shop and the manual I have doesn稚 have the connecting rod big end diameter. Does someone have it? the rods are the same on 1600, 1700, 1900, 2210, 3000, 3110 and others.

clemsonfor · Feb 9, 2020

Let me check my shop manual. Get back to yo soon

bridgeport13b · Feb 9, 2020

Appreciate it

winston1 · Feb 10, 2020

Out of the I&T manual.

bridgeport13b · Feb 10, 2020

winston1 said:
Out of the I&T manual.

That's the manual I have but the rod big end finished diameter is not in the manual.
Thanks

bridgeport13b · Feb 10, 2020

clemsonfor said:
Let me check my shop manual. Get back to yo soon

Thanks

winston1 · Feb 10, 2020

Not following you. You are given rod Journal size and bearing clearance. Are you doing some kind of work on the rods? If not, plastigage should get you where you need to be.

bridgeport13b · Feb 10, 2020

winston1 said:
Not following you. You are given rod Journal size and bearing clearance. Are you doing some kind of work on the rods? If not, plastigage should get you where you need to be.

In that manual its giving the crank pin journal. I need to resize the big end so that they are round apain.

winston1 · Feb 10, 2020

I am old and I know slow to catch on. Be gentle with me. The crankshaft has main journals and rod journals. The rod holds a rod bearing. I normally think of turning the rod journals on the crankshaft to get them round again. The crankpin journal is the same as the rod journal and that is what is showing on the attachment.

bridgeport13b · Feb 10, 2020

winston1 said:
I am old and I know slow to catch on. Be gentle with me. The crankshaft has main journals and rod journals. The rod holds a rod bearing. I normally think of turning the rod journals on the crankshaft to get them round again. The crankpin journal is the same as the rod journal and that is what is showing on the attachment.

It痴 all good haha, this engine is just driving me nuts. The dimensions I need is the rod diameter without beings installed. The bore is out of round and needs to beaut back to round. I called yanmar and they said the dimension is proprietary. The problem is when the rod cap is tightened down the bearing has a specific amount of bearing crush so the bearings doesn稚 move and I need that dimensions.