- Joined
- Feb 7, 2013
- Messages
- 2,496
Yesterday was a rain day so I ripped into the Isuzu engine on the tractor. On analysis, I found one leaking valve
and very little wear on the engine cylinders. I plan to hone the cylinders and install new pistons and rings.
It's a difficult job because I am having to work on the engine with the loader attached. Today I am going to
work on installing a new set of valves and lapping them in using valve lapping compound and some layout dye.
After that it's on to dropping the oil and removing the oil pan so I can remove the old pistons. It's beginning to
look like possibly the engine was overheated once or something. It's a stout engine though with a cast iron
head. I also have new valve guides if I decide to use them but the old ones don't show much wear at all.
The cylinder bores are smooth as glass and no ridge at all on the top. It will be interesting to see what the
ring gap will be on the old rings when I get it all disassembled. The tachometer drive cable was broken and
the hour meter was showing about 1000 hours so that may be close to right considering what I am finding.
It may have sat for years since it was such a hard starting unit. That would explain the original tires.
I tested a new ring in the bore and only about .005 inch gap! It's not a diamond in the rough, more like a
rough diamond maybe...
and very little wear on the engine cylinders. I plan to hone the cylinders and install new pistons and rings.
It's a difficult job because I am having to work on the engine with the loader attached. Today I am going to
work on installing a new set of valves and lapping them in using valve lapping compound and some layout dye.
After that it's on to dropping the oil and removing the oil pan so I can remove the old pistons. It's beginning to
look like possibly the engine was overheated once or something. It's a stout engine though with a cast iron
head. I also have new valve guides if I decide to use them but the old ones don't show much wear at all.
The cylinder bores are smooth as glass and no ridge at all on the top. It will be interesting to see what the
ring gap will be on the old rings when I get it all disassembled. The tachometer drive cable was broken and
the hour meter was showing about 1000 hours so that may be close to right considering what I am finding.
It may have sat for years since it was such a hard starting unit. That would explain the original tires.
I tested a new ring in the bore and only about .005 inch gap! It's not a diamond in the rough, more like a
rough diamond maybe...