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#1
posted to rec.boats
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Autopsy Report on Cruis'n Rulz!
As The Wrench Turns...
Got the heads off; and posted some pics on the metalworking Dropbox at: http://www.metalworking.com/dropbox/ See valve.jpg 3 pics No damage to the cylinder wall or head, and just a couple minor dings on the piston crown. Lucky me. JR HOME PAGE: http://www.seanet.com/~jasonrnorth -------------------------------------------------- |
#2
posted to rec.boats
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Autopsy Report on Cruis'n Rulz!
JR North wrote:
As The Wrench Turns... Got the heads off; and posted some pics on the metalworking Dropbox at: http://www.metalworking.com/dropbox/ See valve.jpg 3 pics No damage to the cylinder wall or head, and just a couple minor dings on the piston crown. Lucky me. JR HOME PAGE: http://www.seanet.com/~jasonrnorth -------------------------------------------------- Definitely looks broken! Hope it goes back together without any more problems. |
#3
posted to rec.boats
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Autopsy Report on Cruis'n Rulz!
On Jul 25, 1:47*am, JR North wrote:
As The Wrench Turns... Got the heads off; and posted some pics on the metalworking Dropbox at:http://www.metalworking.com/dropbox/ See valve.jpg *3 pics No damage to the cylinder wall or head, and just a couple minor dings on the piston crown. Lucky me. JR HOME PAGE:http://www.seanet.com/~jasonrnorth -------------------------------------------------- I was surprised how corroded the combustion chamber was! |
#4
posted to rec.boats
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Autopsy Report on Cruis'n Rulz!
"JR North" wrote in message
news As The Wrench Turns... Got the heads off; and posted some pics on the metalworking Dropbox at: http://www.metalworking.com/dropbox/ See valve.jpg 3 pics No damage to the cylinder wall or head, and just a couple minor dings on the piston crown. Lucky me. JR HOME PAGE: http://www.seanet.com/~jasonrnorth -------------------------------------------------- That's a lot of rust on that head. Other one look like that? |
#5
posted to rec.boats
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Autopsy Report on Cruis'n Rulz!
JR North wrote:
As The Wrench Turns... Got the heads off; and posted some pics on the metalworking Dropbox at: http://www.metalworking.com/dropbox/ See valve.jpg 3 pics No damage to the cylinder wall or head, and just a couple minor dings on the piston crown. Lucky me. JR HOME PAGE: http://www.seanet.com/~jasonrnorth -------------------------------------------------- It does look like someone forgot to fog the engine. |
#6
posted to rec.boats
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Autopsy Report on Cruis'n Rulz!
wrote in message
... On Jul 25, 8:03 am, "jamesgangnc" wrote: "JR North" wrote in message news As The Wrench Turns... Got the heads off; and posted some pics on the metalworking Dropbox at: http://www.metalworking.com/dropbox/ See valve.jpg 3 pics No damage to the cylinder wall or head, and just a couple minor dings on the piston crown. Lucky me. JR HOME PAGE: http://www.seanet.com/~jasonrnorth -------------------------------------------------- That's a lot of rust on that head. Other one look like that? That's what I thought......certainly makes think about whether this is common with I/O's. Never owned one, so I don't know. I believe he said he fogged it, didn't he? Not the ones I see. But then I'm in "trailer boating in lakes" land here in Raleigh. Might be sitting in a slip in salt water does it. There is going to be one or two cylinders sitting with the exhaust valve open when the engine is shut off just about everytime. If the boat sits in water then the humidity is going to remain high through the exhaust system so it will get high in the cylinder as well. It's not specific to an i/o though, any boat with an inboard marinized auto engine is going to be in the same situation. I would have expected the small amount of oil that gets past the valve stems to keep the valves from sticking though. The main issue specific to i/os in a slip is that the outdrive sits in the water. Most outboards can be raised enough to get the entire engine out of the water. Regular use would probably reduce the problem. And that might explain why commercial fishing boats run marinized auto engines for a long time without problems. |
#7
posted to rec.boats
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Autopsy Report on Cruis'n Rulz!
On Jul 25, 9:14*am, "jamesgangnc" wrote:
wrote in message ... On Jul 25, 8:03 am, "jamesgangnc" wrote: "JR North" wrote in message news As The Wrench Turns... Got the heads off; and posted some pics on the metalworking Dropbox at: http://www.metalworking.com/dropbox/ See valve.jpg 3 pics No damage to the cylinder wall or head, and just a couple minor dings on the piston crown. Lucky me. JR HOME PAGE: http://www.seanet.com/~jasonrnorth -------------------------------------------------- That's a lot of rust on that head. Other one look like that? That's what I thought......certainly makes think about whether this is common with I/O's. Never owned one, so I don't know. I believe he said he fogged it, didn't he? Not the ones I see. *But then I'm in "trailer boating in lakes" land here in Raleigh. *Might be sitting in a slip in salt water does it. *There is going to be one or two cylinders sitting with the exhaust valve open when the engine is shut off just about everytime. *If the boat sits in water then the humidity is going to remain high through the exhaust system so it will get high in the cylinder as well. *It's not specific to an i/o though, any boat with an inboard marinized auto engine is going to be in the same situation. |
#8
posted to rec.boats
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Autopsy Report on Cruis'n Rulz!
"jamesgangnc" wrote in message m... wrote in message ... On Jul 25, 8:03 am, "jamesgangnc" wrote: "JR North" wrote in message news As The Wrench Turns... Got the heads off; and posted some pics on the metalworking Dropbox at: http://www.metalworking.com/dropbox/ See valve.jpg 3 pics No damage to the cylinder wall or head, and just a couple minor dings on the piston crown. Lucky me. JR HOME PAGE: http://www.seanet.com/~jasonrnorth -------------------------------------------------- That's a lot of rust on that head. Other one look like that? That's what I thought......certainly makes think about whether this is common with I/O's. Never owned one, so I don't know. I believe he said he fogged it, didn't he? Not the ones I see. But then I'm in "trailer boating in lakes" land here in Raleigh. Might be sitting in a slip in salt water does it. There is going to be one or two cylinders sitting with the exhaust valve open when the engine is shut off just about everytime. If the boat sits in water then the humidity is going to remain high through the exhaust system so it will get high in the cylinder as well. It's not specific to an i/o though, any boat with an inboard marinized auto engine is going to be in the same situation. I would have expected the small amount of oil that gets past the valve stems to keep the valves from sticking though. The main issue specific to i/os in a slip is that the outdrive sits in the water. Most outboards can be raised enough to get the entire engine out of the water. Regular use would probably reduce the problem. And that might explain why commercial fishing boats run marinized auto engines for a long time without problems. The number one reason this happens is that folks try to extend the life of their exhaust systems beyond recommended limits. |
#9
posted to rec.boats
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Autopsy Report on Cruis'n Rulz!
The result of the failed right bank manifold, allowing sea water to run
in the exhaust port into the cylinder. That's what seized the valve also. Only 2 cylinders show rust on the right bank, none on the left. JR jamesgangnc wrote: "JR North" wrote in message news As The Wrench Turns... Got the heads off; and posted some pics on the metalworking Dropbox at: http://www.metalworking.com/dropbox/ See valve.jpg 3 pics No damage to the cylinder wall or head, and just a couple minor dings on the piston crown. Lucky me. JR HOME PAGE: http://www.seanet.com/~jasonrnorth -------------------------------------------------- That's a lot of rust on that head. Other one look like that? -- -------------------------------------------------------------- Home Page: http://www.seanet.com/~jasonrnorth |
#10
posted to rec.boats
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Autopsy Report on Cruis'n Rulz!
On Jul 25, 11:21*am, JR North wrote:
The result of the failed right bank manifold, allowing sea water to run in the exhaust port into the cylinder. That's what seized the valve also. Only 2 cylinders show rust on the right bank, none on the left. JR That makes sense. So what's the plan? |
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