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Old 19 April 2018, 12:07   #1
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Country: UK - N Ireland
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Optimax running temperature

After todayís run out Iím curious as to the normal running temperature of anyone elseís optimax? For reference mine is a 150hp.
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Old 19 April 2018, 13:47   #2
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With the current sea temperatures, you will be lucky to see 90 degrees. At normal running revs the poppet valve opens and the thermostats do not have any effect ,,, and so its the water temp that effect the engine temp. The key is to let the engine warm up fully to around the 130 deg thermostat opening at idle or slow speed trolling before gunning it. Same as shut down, let it idle to normal operating temps. IMHO that is ,,, oh, and the Bible here http://www.bbcboards.net/showthread.php?t=25829

Are you measuring the temperature on a smartcraft gauge ?
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Old 19 April 2018, 17:28   #3
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I hope this isnít a stupid question but I presume youíre talking degrees Fahrenheit?
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Old 20 April 2018, 02:51   #4
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I should hope so
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Old 20 April 2018, 03:58   #5
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Optimax running temperature

I think I may have a sticky thermostat, fwiw Iíve grown up around/ racing two strokes so am familiar with the importance of properly warming them up etc.
Thanks for your help.
Ps my brain only works in Celsius
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Old 20 April 2018, 05:26   #6
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Quote:
Originally Posted by Vinny31 View Post

Ps my brain only works in Celsius
Mine too :-)
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