Hello Richard and BobConnie and everybody who offered terrific advice here, I got crazy busy and have not had a chance to close the post and thank everybody.
Richard, you are a clever man great idea there about how to measure out of round for the big ends.
I have in the mean time procured a big enough mic to check the journals and a bore gauge, though an excellent on the spot way to check was proposed by Richard.
Having said that.....I finally have gotten some great service
from Yanmar Japan
, I needed a clutch
and some other bits for the gear
box. But...I am stymied by the fact that Yanmar
no longer has pistons, liners, rings, valves, springs.....they can make me bearings.....
So I am kind of stuffed...now I am looking at Chinese suppliers for a master rebuild
Thanks everybody for all of your input....The plan is a master rebuild
kit, no honing required, new liners, new rings and pistons, valves...effectively a new engine
I was up in saigon recently after market suppliers told me.
Yup, sure we can match it, but you have to send us up samples.....My though..okay you want me to pull a rod, liner, head
, and send them up to you, lay my boat up for a month, so you can hopefully send them back to me with the chance that you cannot in fact match them ?
He proceeded to drop the piston and pin he was showing me onto the concrete floor and put it back in the box !
Thanks again all. I am so grateful for all the help.