Home › Forum › Ask A Member › Evinrude 18hp temp › Re: Evinrude 18hp temp
My 1959 Evinrude Fastwin 18 runs at between 162 and 168 in the barrel at high idle. It runs a little cooler at WOT on the boat. Seems to run 158-164 after a blast around the lake. Also measured with an infrared non contact thermometer. I think your temp is OK and it sounds like your thermostat is functioning as it should.
I though that was pretty warm when I first got my engine running as well but it does not overheat and it is a great runner. It will run fast or slow for as long as you want it to without issue. I trolled the whole lake for hours and then made a couple hot laps around the 860 acre puddle and the old girl never missed a beat.
-Ben
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