Yanmar engine help?

clemsonfor · Feb 10, 2020

bridgeport13b said:
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.

Forgot untill late last night. But what manual do you have? We may have the same one. Mine is Yanmar. But if they told you it's proprietary then it won't be in the manual I wouldn't think?

bridgeport13b · Feb 10, 2020

clemsonfor said:
Forgot untill late last night. But what manual do you have? We may have the same one. Mine is Yanmar. But if they told you it's proprietary then it won't be in the manual I wouldn't think?

Hi my manual is not yanmar, but if you could check that would be great. It is proprietary from what I was told but not 100% sure.

CoyPatton · Feb 10, 2020

clemsonfor said:
Forgot untill late last night. But what manual do you have? We may have the same one. Mine is Yanmar. But if they told you it's proprietary then it won't be in the manual I wouldn't think?

I guess like Winston I am old and and slow! If your rod opening is out of round, then replace the rod. There is likely not enough enough material to safely remove any. If the crank surface is out of round, you will need to buy oversized bearings based on the amount of material removed by the machine shop. They will be able to tell you how much they removed.