502 extreme water temperature fluxuation under power
04-23-2017, 11:04 AM
#11
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has anyone ever drilled holes in a thermostat to help maintain thermal circulation?
it seems like the only way left to go for me since the engine is either too cold without a thermostat or fluctuates between extreme highs when installed.
I have literally tested, cleaned, flushed and changed everything in the cooling system. I'm run out of options. I've changed every culprit in the system, followed every advice from reputable many performance marine shops.
Kindest Regards
DW
it seems like the only way left to go for me since the engine is either too cold without a thermostat or fluctuates between extreme highs when installed.
I have literally tested, cleaned, flushed and changed everything in the cooling system. I'm run out of options. I've changed every culprit in the system, followed every advice from reputable many performance marine shops.
Kindest Regards
DW
His thread where he found a shell
http://forums.iboats.com/forum/engin...-hot-ter/page2
I should have read your first post better
04-23-2017, 11:54 AM
#12
Charter Member # 55
Charter Member
At 200* the water temp alarm should be sounding
Did you use this gasket??? http://www.mercruiserparts.com/530451-gasket
Did you use this gasket??? http://www.mercruiserparts.com/530451-gasket
04-23-2017, 08:29 PM
#13
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Join Date: Aug 2013
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re:Griff
thank you for your input and sharing this information...
the temp alarm does come on if I stay in throttle long enough,
re: the gasket... I've never seen a gasket like that, what's the 4 small holes about? I never removed the old gasket, it seemed fine and I never scraped it off, but I dont see any small holes in it... What are those for? how does it work, what do they do???
Kindest Regards
DW
thank you for your input and sharing this information...
the temp alarm does come on if I stay in throttle long enough,
re: the gasket... I've never seen a gasket like that, what's the 4 small holes about? I never removed the old gasket, it seemed fine and I never scraped it off, but I dont see any small holes in it... What are those for? how does it work, what do they do???
Kindest Regards
DW
