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Author Topic:   Wood interior on 150
royaloakwhaler posted 02-11-2006 02:50 PM ET (US)   Profile for royaloakwhaler   Send Email to royaloakwhaler  
I was thinking about getting a used 150 hull and re-doing the interior in mahogany. Has anyone done this and do you have pictures you can post? What is the most HP you have seen on a 150? Using the equation [extracted from the federal regulations governing horsepower ratings]:
(16.416 x 6.5 x 2) - 90 = 110 hp should be the max it can handle. I was thinking about putting the 90-HP two-stroke motor from my 170 on the 150 and then re-powering the 170 with a larger motor. Thanks
where2 posted 02-11-2006 09:53 PM ET (US)     Profile for where2  Send Email to where2     
Start with some flooring. I've been considering this stuff for the floor in a few of my bathrooms at the house. When the bathroom is only 5'x7', why not have the look of a fine motor yacht?
runpasthefence posted 02-11-2006 09:58 PM ET (US)     Profile for runpasthefence  Send Email to runpasthefence     
Sounds like a neat project. I've never heard of someone doing it, but I would sure love to see it done. Combining old and new would definately be neat. I've always questioned the horsepower rating on the new 150's. I think it would be a blast with a 90, however, I don't have any experience with the 150. I have a classic 15 with a 90 Yamaha and it is a blast.
ScottS posted 02-14-2006 01:31 PM ET (US)     Profile for ScottS  Send Email to ScottS     
I too have considered replacing the interior of a 130 or 150 with mahogany. It would give the hull a classic look, plus you could improve the comfort of the seating with better backrests. A simplier version would be to replace the seating with wood, but retain the fiberglass console.

As far as cost, you might come out ahead by getting an older 15 that needs repowering and interior work, but by my estimates the difference would be minimal.

The 150 is rated for 60 HP. There are many discussions on this site about the pros and cons of overpowering, which you can find through the search link near the top of this screen.

Please keep us updated and post some pictures if you go forward with this project!


Buckda posted 02-15-2006 12:31 PM ET (US)     Profile for Buckda  Send Email to Buckda     
One of the overlooked factors in the CFR for HP ratings is the "test course" that the boat has to be able to maneuver.

One could logically assume that Boston Whaler tested the hull with a variety of power plants (available from Mercury) and arrived at the 60 HP rating based on the results of that testing.

Despite the brand preferences of many buyers, Mercury's extensive outboard motor lineup actually provides a good opportunity for Whaler to test the hull with a great many I don't see this as a negative.

Does any of that mean that the boat "can't" handle a 90 HP motor? Maybe. Maybe not. Remember, not only did the boat have to run that course, but the results of that test run were likely scrutinized by engineers and the "dreaded" attorneys who evaluated the relative risks involved with rating the boat at a level that was closer to the "edge".

Remember, attorneys, despite what you and I see on TV, they like to keep their clients out of the courtroom - so they tend to be rather conservative on this front.

Depending on whom was the most powerful person in the room - based on title or sheer personality - that person had the most influence on the final decision.

All that said; use that as background information as you wade through the other material on the implications of "overpowering" your boat.


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