3 Cylinder Yanmar after 20 years!
- Thread starter jamie N
- Start date
Boathook
Well-known member
I'm surprised that it started and ran. Wonder what the internals are like and whether it could be trusted as a boat engine.
Sandy
Well-known member
I think his choice of footwear was a serious mistake.
AntarcticPilot
Well-known member
I'd have thought they should have had the valve gear and the cylinder head off, to check they're ok. Kudos to them getting it running, though!
William_H
Well-known member
It would have been relatively easy to remove the sump and at least clear it out. Apparently also no check on oil pressure. Ovedrhaul of fuel pump might have been worthwhile. A huge job perhaps not really worth the effort certainly not if you were paying a professional. Probably reliable now given that most failures are due to poor maintenance of ancillaries. ol'will
Boater Sam
Well-known member
Let this video be a lesson to anyone buying a painted up "recon" engine, it could be new paint and bits on an old rotten clunker. They have not even checked the tappets, compression tested or checked oil pressure.
jamie N
Well-known member
A couple of the replies from the Q&A section below the video. I reckon that the only stuff on video was of 'action', not diagnostics.
"That's not a restoration a restoration means you tear it down and over haul it and replace all worn parts and gaskets and so forth what you actually did is the equivalent of putting makeup on a pig"
"Thanks for watching! All worn parts were replaced. Inspection of the engine internals showed no signs of damage or wear. The engine has approximately 400 hours on it and will have no issues making through its expected service life. Your definition of restoration is exactly what was carried out here. Cheers!"
"If there was water in the crankcase, there is likely rust on the cylinder walls and the bearings are suspect. How do you know the engine internal components are not damaged? It could run for days or weeks, then die or start burning excessive oil, etc."
"Thanks for watching! There was a layer of oil on top of the water that protected the bottom end. Undoubtedly there was rust on the cylinder walls but not enough to lower compression. Oil pressure is still high, indicating the bearings are fine."
"That's not a restoration a restoration means you tear it down and over haul it and replace all worn parts and gaskets and so forth what you actually did is the equivalent of putting makeup on a pig"
"Thanks for watching! All worn parts were replaced. Inspection of the engine internals showed no signs of damage or wear. The engine has approximately 400 hours on it and will have no issues making through its expected service life. Your definition of restoration is exactly what was carried out here. Cheers!"
"If there was water in the crankcase, there is likely rust on the cylinder walls and the bearings are suspect. How do you know the engine internal components are not damaged? It could run for days or weeks, then die or start burning excessive oil, etc."
"Thanks for watching! There was a layer of oil on top of the water that protected the bottom end. Undoubtedly there was rust on the cylinder walls but not enough to lower compression. Oil pressure is still high, indicating the bearings are fine."
fredrussell
Well-known member
I enjoyed that, cheers. As an owner of the same engine I’m rather encouraged by its Lazarus-like capabilities. I especially like the part when he shows us what a bolt looks like when removed - I had always wondered.
Not for the purists obviously, but I do love a bit of backyard mechanics.
Edit: Watched part 2 now. That’s a pretty smoky old donk really, would have benefited from a full tear down but at Yanmar parts prices might not have been worth it economically. I’m sure they’ll get a fair few more years out of it as it is, so fair play to them.
Not for the purists obviously, but I do love a bit of backyard mechanics.
Edit: Watched part 2 now. That’s a pretty smoky old donk really, would have benefited from a full tear down but at Yanmar parts prices might not have been worth it economically. I’m sure they’ll get a fair few more years out of it as it is, so fair play to them.
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