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performance

Posted: July 19th, 2019, 11:19 pm
by rjr
So our 440 has twin cat 3126s rated at 420 hp each. We can get 17 mph at 2350 rpms. A marina friend has a Sea Ray 480 with 3116 Cats. Not sure of hp but it's pretty close.

His boat easily attains 25 mph.

I don't understand.

Re: performance

Posted: July 21st, 2019, 2:49 am
by RGrew176
Hull design may very well be a contributing factor.

Re: performance

Posted: July 21st, 2019, 9:31 am
by bud37
That is interesting, I think the 3116 has 350hp......is the 480 a bridge or a dancer style ?

Re: performance

Posted: July 21st, 2019, 3:00 pm
by km1125
Is 2350 the cruise rated RPM for that motor? Can it go higher or is that maxed out?

Re: performance

Posted: July 21st, 2019, 6:45 pm
by rjr
bud37 it is a flybridge. Plus I remember the owner telling me it's weight is 40K plus while ours is 30K+.

km1125 - 2400 is the "suggested reduced rpm cruising speed" according to the CAT manual.

thanx