speed

Hello all, I've seen this topic thrown around a bit but have never heard any definitive answer. I typically cruise my 2002 260 DA around 3500-3700 RPM. In calm conditions and little to no current, the built in speedo reads about 28-30mph while the GPS unit reads 20-24mph. To me the speed of ~28...

We’ve been generator challenged this season – first with the generator surging and second that it only runs for a few minutes at a time. The surging was fixed with a complete tear down and ultrasonic cleaning from a local marina – varnish in the jets. When reassembled the idle screw that sets...

I got a 89 Sea Ray 300 Sundancer with 2x 5.7 350. Can anyone tell me the best RPMs for good fuel economy at hull speed and on plane? I read that anything under 1000 rpm is good for slow speed and anything between 2700 and 3000 is best while on plane for this size boat. I am thinking on...

It's not actually my boat which is why you'll find I pretty much know nothing about it...but I'm in a time sensitive situation and trying to find help so I turned to here! 1995 SeaRay 370 DA with a 7.4l GAS engine.... What should the top and cruising speed be? And would another motor be a...

Hello, I've just purchased a 1978 24' Sedanbridge. The motor has been replaced with a 2005 Chevy 350, Edelbrock Manifolds and fresh water cooling. Alpha 1 outdrive was rebuilt. I went out the other day, ran it about 2500-2800 rpm's. This was comfortable, making about 13 knots in rolling seas...

I just completed the survey run on a 2000 380 AC I plan to buy. It has Cat 350 hp direct drive diesel engines. We got 2700 rpm from the stbd and 3000 rpm form port, WOT at 19.5 MPH. 2400 rpm gave only 13.5 MPH by GPS and speedo. The bottom is clean and the props look fine. Question: Is this the...

I have a 1988 seville 100hp o/b motor and the slowest idle speed is 5mph and in neutral revs at 1500rpms... this is way to fast to get in my slip with ease. whats the best way to adjust the idle down. Should i adjust it at the throttle lever or at the motor, which is the easier fix. Thanks

:huh:HI Can anyone tell me what takes place on this first service. I have been keeping the rpm down most of the time and not running WOT. I am hoping that after the first service that she will feel quicker? any comments? Its hard to tell when i try not to open her up but with a short burst she...

Hey everyone. We just purchased a brand new 2009 270 Select EX with a 496MAG 375HP engine. We've had it out quite a few times in the month that we've had it so far. The mechanic at Sea Ray that gave us the demo on it when we bought it, said that he got it up to 59mph easily. I was on...

Does anyone know what the range should be of a 2000 270 Sundancer with twin 4.3L EFI engines and the factory 100 gal. tank? I need something to compare with to determine if there is something wrong, or if the range just sucks in general. Also, what is the avg. cruise speed? I have looked...