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Impeller lost chunks. No thermostat to stop chunks |
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Evilsizer 
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Joined: August-29-2019 Location: Ohio Status: Offline Points: 62 |
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 Topic: Impeller lost chunks. No thermostat to stop chunksPosted: September-04-2019 at 11:16am |
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Hey guys. Just purchased the boat. A 78 Ski Nautique with the 351. My impeller is missing chunks. I checked the thermostat housing and found no thermostat was installed. Does this mean a total rebuild?
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8122pbrainard
Grand Poobah 
Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Posted: September-04-2019 at 11:27am |
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Andrew,
Rebuild of what? The RWP or are you thinking engine? Unless the engine was overheated and run for some time, I would say no. Keep an eye for signs of water in the oil. If you are thinking the RWP, then no. Just get a new impeller in it. A T stat would help too! |
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GottaSki
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Joined: April-21-2005 Location: NE CT Status: Offline Points: 3327 |
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Posted: September-04-2019 at 1:10pm |
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The Thermostat lets water out, not in
Check the status housing water inlet, it's inside dimensions are quite small And check the exhaust manifold inlets |
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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."
River Rat to Mole |
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Evilsizer
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Joined: August-29-2019 Location: Ohio Status: Offline Points: 62 |
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Posted: September-04-2019 at 1:33pm |
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Ok. I was thinking the chunks would have went down the intake and into the motor
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Orlando76
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Joined: May-21-2013 Location: Mount Dora, FL Status: Offline Points: 3108 |
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Posted: September-04-2019 at 1:42pm |
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 well actually it does both.
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Please support The Cystic Fibrosis Foundation
1976 Ski Nautique 351 Escort 1993 Ski Nautique purple and black 351 HO PCM |
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bfootr
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Joined: March-04-2019 Location: Benson, NC Status: Offline Points: 138 |
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Posted: September-04-2019 at 1:56pm |
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Don’t forget to check the water pump IINLET hose. When my impeller broke apart, I found the broken vanes there. Most folks including myself initially check downstream from the water pump. Often the broken vanes obstruct the water inlet side.
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Hollywood
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Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13510 |
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Posted: September-04-2019 at 3:28pm |
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No |
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Posted: September-04-2019 at 3:35pm |
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I'm going with out! 
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Orlando76
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Joined: May-21-2013 Location: Mount Dora, FL Status: Offline Points: 3108 |
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Posted: September-04-2019 at 5:00pm |
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It’s gotta let it in to let it out. It doesn’t magically produce water. |
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Please support The Cystic Fibrosis Foundation
1976 Ski Nautique 351 Escort 1993 Ski Nautique purple and black 351 HO PCM |
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Hollywood
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Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13510 |
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Posted: September-04-2019 at 5:10pm |
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Do you eat with the same hole you ***************?
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KENO
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Joined: June-06-2004 Location: United States Status: Offline Points: 10645 |
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Posted: September-04-2019 at 5:15pm |
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Sometimes I have my head up there though,as a matter of fact I think we all have at one time or another
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GottaSki
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Joined: April-21-2005 Location: NE CT Status: Offline Points: 3327 |
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Posted: September-04-2019 at 5:43pm |
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huh, seems my careless brevity caused some seasons-closing consternations...
Permit me to rephrase... Water exits the engine block through the tstat Its presence could only trap pieces exiting the block, but impeller chunks would rather plug inlets , then if get through skip the block entirely and go out the manifolds, as that is where the major flow and delta-p is. in summary, Its a gazouta, not a gazinta |
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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."
River Rat to Mole |
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96SNEFI
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Joined: March-23-2009 Location: Canada Status: Offline Points: 138 |
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Posted: September-05-2019 at 2:04am |
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So thinking about this in the fuel lines...there are little screens here and there in the fuel path.
Could there be a way to screen the pipe from the RWP exit before it "gazinta" the engine thereby capturing the chunks? |
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GottaSki wrote: