K301 engine bore scoring
 

I pulled the head on my newly acquired 127 and to my dismay the engine was scored really bad and it obviously was not running :crap:. The piston is not stamped on top std, but i think it is not been bored. I tried to show how deep the grooves are, but about + .045. the last picture is a .045 spark plug gauge wire buried :bigeyes:

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I think this will need to be bored and put a sleeve in it for a std piston. I read a couple places of boring them to 3.5" but I don't think I want to do that.

My thoughts are that it got water in the cylinder and rusted the pin to the side or corroded in that area and then ran for a while. It got pushed to the back for later.

Wow!
That is a nasty looking bore for sure.
Good luck with it

I'll second that !:beerchug:

My goodness !

O M G...............:bigeyes:

Ya it's bad, but I've seen worse in engines, Yes it can be bored/sleeved back to Std, and be as good as new if done by a reputable shop.
Something I'll mention as I am not up to date on the cost of a sleeve repair:
Since that is not a one- of-a kind, high dollar value engine of historical significance, a lot of times one can find an identical engine block either in good shape or easily machined .010 over and go that way.
That engine can become a parts donor.
It is not the first time unknown problems are discovered.
What your plans for the tractor are, will direct your wise financial decision. :bigthink:

Thankfully I was able to measure it with my primary cylinder bore measuring tools.

Yes, thats true George, I called a reputable machine shop ~$200 parts and labor to sleeve. A friend would be able to do it for way less. I will see what comes along.

I've seen engines get sleeved only to have the whole cylinder break off and be totally junk , I'd find another block ....be a lot cheaper in the end

I would think that event would be on a thin walled cylinder. :bigthink:

it was a k series someone posted on here a couple years ago or so.