Whaler Central - Boston Whaler Boat Information and Photos

Posted by Silentpardner on 06/24/13 - 5:08 PM

How much difference should I expect in fuel economy, if any, between a 50 hp difference in what is basically the same 2 motors on the same boat? I am about to pull the trigger on a couple of new counter-rotating 300's for the 27, but I am hesitating because I really need to get the most range out of my single 175 gallon tank. The current 1989 2 strokes that are on the boat will give a range about 150-200 miles and I am thinking of adding 1 more tank to the boat. I was thinking I might be able to avoid this if I went with modern 4 stroke power, but I think I want to max the hp to the 600 the boat is rated for.

Anybody got any thoughts?

Posted by jlh49 on 06/24/13 - 5:37 PM

Go to the Yamaha Outboard Website Performance Bullentin Section (See below link) and look for an offshore boat similar in design/weight as your Whaler model & compare fuel efficiency numbers for both engines if provided. Good Luck!

JLH

http://www.yamahaoutboards.com/owner-resources/performance-bulletins

Posted by tedious on 06/24/13 - 8:22 PM

There will be very little difference in mileage at cruise - the 300s will burn more per hour but be a bit faster. The 300s will burn a little more at WOT, but not a lot.

Posted by Silentpardner on 06/24/13 - 10:09 PM

Thanks for the info, I think that is right after looking at the link suggested. I just went ahead and got the 300's, if I have to put another tank on the boat later, I will.