Does anybody know the opitmum RPMs for the fastest cruising speed with the idiot lights instead of a temp gage? It's hard to tell how hot the engine is running. It seems the best range is 2200 to 2600 RPMs. Does anybody have any info or comments?
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rpm
you did not say what engine you have but most will cruise at 75%to80% of the max operating rpm. 2600 sounds slow you should be able to get closer 2800 to 2900 assuming that you have a yanmar that peaks out at 3600. It should get you to your appx hull speed.
you did not say what engine you have but most will cruise at 75%to80% of the max operating rpm. 2600 sounds slow you should be able to get closer 2800 to 2900 assuming that you have a yanmar that peaks out at 3600. It should get you to your appx hull speed.
Best Bet? - Check manual
I would bet that you have a 3GM30F. Go to the link below and poke around. You'll find the specs for your engine.
I would bet that you have a 3GM30F. Go to the link below and poke around. You'll find the specs for your engine.
steam
you'll usually see steam in the exhaust when an engine's running too hot. a temp gauge, however, is a really good investment. I never back my boat out of the slip until the temp gauge tells me the engine's ready.
you'll usually see steam in the exhaust when an engine's running too hot. a temp gauge, however, is a really good investment. I never back my boat out of the slip until the temp gauge tells me the engine's ready.
376 Engine RPM
I have a 96 376. I installed a temp guage when the boat was new. I run about 3000-3200 rpm. The boat moves near hull speed and is nice and smooth at that rpm. Every once in a while I will run a few minutes at 3500 to blow out any carbon and I only notice a slight increase in engine temp.
I have a 96 376. I installed a temp guage when the boat was new. I run about 3000-3200 rpm. The boat moves near hull speed and is nice and smooth at that rpm. Every once in a while I will run a few minutes at 3500 to blow out any carbon and I only notice a slight increase in engine temp.
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