Optimax running temperature

Vinny31 · 19 April 2018, 18:07

After today’s run out I’m curious as to the normal running temperature of anyone else’s optimax? For reference mine is a 150hp.

Jeff · 19 April 2018, 19:47

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 ?

Vinny31 · 19 April 2018, 23:28

I hope this isn’t a stupid question but I presume you’re talking degrees Fahrenheit?

Jeff · 20 April 2018, 08:51

I should hope so [emoji23]

Vinny31 · 20 April 2018, 09:58

[emoji102] I think I may have a sticky thermostat, fwiw I’ve 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 [emoji16]

Jeff · 20 April 2018, 11:26

Quote:

Originally Posted by Vinny31

[emoji102]
Ps my brain only works in Celsius [emoji16]

Mine too :-)