Well, it's been said over and over again, but these engines can run well enough to mask internals issues for hours and hours.
This is my first time going any further than valve adjustment on a K Series.
I now have two engines for my 1250!
One (referring to this engine as the "replacement") has a chunk missing from the cylinder wall and a matching piece of the piston skirt missing! It also has some portion of the ACR that is loose.
The other is the engine that came in my 1250.
It had valves so covered in oil and carbon that I really am clueless as to how it ran at all. My hunch that the stuck valve was the nail in the coffin was correct. The exhaust valve was pretty sticky, even after the engine had cooled. This block has been bored .010 and has quite a bit of play in the crank bearings.
Both engines ran before being disassembled. My thought was to refresh the replacement engine that didn't smoke or knock. Then I opened it up and found the missing chunks of piston and cylinder.
The original engine would need crank bearings, a rebore, valves, guides, piston, rings, and rod.
I have lots of questions on the possible courses of action. I must also say that dealing with johncub7172 was an absolute pleasure. He went through the trouble of test running this engine for me before I picked it up and then after I tore it apart and found these internal problems he insisted on a full refund. Great guy to deal with.
I'm going to invest in a good micrometer and some telescoping gauges. As of now I only have my mechanical intuition to go off of, and some dial calipers and feeler gauge, which can only get me so far since I haven't tore down one of these engines before.
What do you guys think?
|