proper engine temps

[philschwenk]

What should the "normal" engine temp be when cruising at approx 2700 rpm? And at 3000 rpm?
I have a Yanmar disel 220 hp.
Thanks!
Phil

 

[scross]

Phil, I don't have your engine or even the same model boat. First place I would look is the engines manual for "normal" operating temps.
Search a prior thread for an R29.
viewtopic.php?f=5&t=5423&p=38876&hilit=Yanmar+temperatures#p38841
In general, it's my understanding that you should probably see between 175 to 195 degrees at 2700 rpm. At higher RPMs the temps will rise by a few degrees. There is also the issue of the difference between what your particular sensor will read/display and the true temp of the coolant.
Once you determine what is the normal operating temp for your boat at several different RPMs then you have a baseline for what an unusual temperature would be.

 

[philschwenk]

Thanks for the info. Enjoy the eclipse!
Phil

 

[Andrew Custis]

Hello Phil,

You actually have a 260 HP Yanmar diesel. The proper engine temperature should range from 190-200. I have seen some run a bit higher depending on water temperature but this is the range I see most with the Yanmars.

 

[philschwenk]

Thanks Andrew. See you in Roche.
Phil