Posted by super99 on February 11, 2023 at 15:59:11 from (184.20.235.0):
I haven't posted on this yet, right or wrong, here's where I'm at on it. The old tach has over 5000 hours on it and the new one that was on it when I got it has 125 hours( in 2 years). It used quite a bit of oil and had lots of blow by, so I figured it needed rings, bearings and a valve job. A few warm days in February and I got the motor out on the stand and started tear down. The head is off, you can wiggle the valve springs, so the guides probably need replaced. I took the head to a place I trust to check it out. There is NO ring groove in the sleeves, smooth as a baby's butt where the pistons stop travel, but there is a vertical scratch on 4 sleeves. I got the pistons out and those 4 had the top ring broke in 2 pieces, so I figure the scratch is where the broken ends rubbed the cylinder wall. I took the rod caps off and all of them have a brown spot on one side of the bearing, some bigger than others. I took the 2 center main bearings out and they are the same way, the thrust bearing appears to have a spot worn clear thru the bearing itself. I'm thinking that I need to have the block line bored and the rods checked. I'm trying to do this cheaply as possible. It only does tractor rides, shows, a couple plow days and piddle around home some, I can't see spending lots of unnecessary dollars on it for no more than it does. If it was a working tractor then I could see it. I have a wood project for my granddaughters birthday next weekend that I have to finish before I get back on the motor. Chris
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