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351 winsor water temperature
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tmcboat View Drop Down
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    Posted: August-16-2018 at 5:18pm
Hi All,
I have a 160 degree thermostat in my 351 winsor -- it will sometimes go to 170 degrees max
should i install a 180 thermostat- I read that the 351 winsor runs best at 190 but i think in a marine application thats too close to 200 degrees which doesn't give you much time to react in an overheat situation ex. broken belt, raw water pump or main engine water pump failure or blocked stern drive raw water intake? one person said you get about 3% more horse power if the temp is closer to the 190 degree range-?anyone know if this is true?
your thoughts and suggestions please
tmcboat
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bb12 View Drop Down
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Points: 355 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bb12 Quote  Post ReplyReply Direct Link To This Post Posted: August-16-2018 at 5:31pm
Carbed 143
EFI 160
1989 Ski Nautique 2001
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Fl Inboards View Drop Down
Grand Poobah
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Points: 2106 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Fl Inboards Quote  Post ReplyReply Direct Link To This Post Posted: August-16-2018 at 7:05pm
is this a stern drive or a true inboard? Ford EFI like to run at 160*-170* carby motors 140*-160*
Hobby Boats can be expensive when the hobbyist is limited on their own skill and expertise.




1993 Shamrock "fat" 20. 2008 Nautique 196 5.0
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tmcboat View Drop Down
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Points: 28 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tmcboat Quote  Post ReplyReply Direct Link To This Post Posted: August-19-2018 at 4:27pm
HI All,
I have a volvo penta stern drive and a holly 4 bl carb so 160 degrees is ok
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8122pbrainard View Drop Down
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Originally posted by bb12 bb12 wrote:

Carbed 143
EFI 160


54 Atom

77 Tique

64 X55 Dunphy

Keep it original, Pete
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