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Quick thermostat repair question |
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davidcmeyer 
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Joined: July-07-2008 Location: Madison WI Status: Offline Points: 16 |
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 Topic: Quick thermostat repair questionPosted: July-19-2021 at 11:02am |
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I plan to replace thermostat (160) on my 1996 Sport GT-40. Do I need to apply gasket sealant or just the dry gasket when I replace? (It's been a long time since i've done this).
Background: Overheat issue, replaced worn impeller... Checked all hoses, cleaned filter (nasty hunk of seaweed), tightened all hoses. Now, warm boat temp is around 125-130 under load, not much higher idling. Went from too hot to too cool. Should I be concerned? Everything I read says 160-175 as normal operating temp for fuel injected.
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Madtown Skier
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KENO
Grand Poobah 
Joined: June-06-2004 Location: United States Status: Offline Points: 10639 |
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Posted: July-19-2021 at 2:04pm |
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Some sealant won't hurt.
Was your impeller missing any pieces? If so you may find one or more pieces holding the thermostat open when you take the cover off.
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davidcmeyer
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Joined: July-07-2008 Location: Madison WI Status: Offline Points: 16 |
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Posted: July-19-2021 at 2:14pm |
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Good point, the impeller was partially shredded, altho i've seen worse. Will check that and let y'all know.
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Madtown Skier
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