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   1986 OUTRAGE 22 with 150-HP

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Author Topic:   1986 OUTRAGE 22 with 150-HP
Mike Kub posted 12-04-2014 02:51 PM ET (US)   Profile for Mike Kub   Send Email to Mike Kub  
[For an OUTRAGE 22 Boston Whaler's] older literature gave estimated speeds with various engines. What could one expect with a new Yamaha 150-HP?
Teak Oil posted 12-04-2014 08:17 PM ET (US)     Profile for Teak Oil  Send Email to Teak Oil     
High 30's to low 40's, depending on load
bkovak posted 12-04-2014 08:42 PM ET (US)     Profile for bkovak  Send Email to bkovak     
Mike--I had a 1988 Outrage 22 with a Mercury 150 two-cycle engine. It could hit about 39-MPH in calm conditions with a light load. I'm not sure what you will get with the heavier Yamaha 150 four-cycle. Have you considered a 150 Evinrude E-TEC, or are you looking at buying one already set up with the Yamaha 150? I believe the E-TEC is about 60-lbs or so lighter, which could be advantageous. Either way, they are both great motors.

Brian

jimh posted 12-05-2014 12:33 PM ET (US)     Profile for jimh  Send Email to jimh     
I would expect the speed of a Boston Whaler OUTRAGE 22 with an engine of 150-HP to be the same for old and new engines. Horsepower ratings have not changed. If a 150-HP engine could make a Boston Whaler OUTRAGE 22 go a certain speed in 1985, you can anticipate the same speed in 2014 with that horsepower. The only variable is the weight, which might be considered for both the hull and the engine. The hull may be heavier due to having picked up some retained water, and the engine certainly might be heavier. But these modern-day era four-cycle engines from Yamaha have slimmed down in weight, so, among the four-cycle choices, they are some of the lightest.
msirof2001 posted 12-07-2014 03:52 PM ET (US)     Profile for msirof2001  Send Email to msirof2001     
On my 1995 Outrage 21, I went from a Yamaha 2-stroke 200 to a Yamaha 200 XB (4-Stroke, 4-Cyl). The 4-stroke is about 50 lbs heavier. I found that the top-end was about the same for both. I have different props. With the 2-stroke, I has a 19 pitch and the 4-stroke, a 17-pitch SDS. This causes the comparison to be a little apples-to-oranges. I found the placement of the "umph" to be in different places in the zero through max RPM scale. With the 2-stroke, there was much more of a kick out of the hole and it got to plane faster. With the 4-stroke, that kick is in the mid RPM range. Recent developments in technology have certainly reduced the weight difference between 2-stroke and 4-stroke.
martyn1075 posted 12-08-2014 12:38 AM ET (US)     Profile for martyn1075  Send Email to martyn1075     
msirf2001 your studies make complete sense. The biggest difference is the gas mileage. It likely gets double the mpg. I'm guessing about 4-4.5? Reliability is probably a wash for the most part.
scotch posted 12-11-2014 12:46 AM ET (US)     Profile for scotch  Send Email to scotch     
My first whaler was an OUTRAGE 22 with Johnson 175-HP two-cycle. It topped out at around 45-MPH. Replaced that engine with a Honda 225-HP four-cycle, top speed was around 45-MPH. If you ask me, an OUTRAGE should have a top speed of [over] 40-MPH, so don't short yourself on horsepower.
Don SSDD posted 12-14-2014 09:33 AM ET (US)     Profile for Don SSDD    
The difference between old and new technology lies in the HP and torque curves. The newer [outboard engine] has a broader torque and horsepower curve. A two-cycle outboard engine has a broader curve than a naturally aspirated four-cycle outboard engine, to begin with. With the same HP rating, you might get the same speed with the same horspower, but only in a narrow and higher RPM range for the four-cycle outboard engine. A new four-cycle 150-HP [--perhaps meant to say two-cycle--jimh] likely pulls way better than the 150-HP four-cycle outboard engine from, say 1500 to over 5000-PRM, while the four-cycle outboard engine only starts pulling good at, say, 3000-RPM.

Look at the curves before deciding what to buy.

Don

jimh posted 12-14-2014 01:23 PM ET (US)     Profile for jimh  Send Email to jimh     
It would be nice if you could find reliable torque v. engine speed curves for all modern outboard engines, but you cannot. Usually you only see these when one manufacturer wants to make a comparison that favors their brand against competitors. These charts are then immediately attacked by the owners and fans of other brands as having been rigged or set-up unfairly or making an inappropriate comparison. Usually you only see these torque curves from Evinrude. That is because they make two-cycle engines and their engines really do have a significant advantage in the broadness of their power curve. The other manufacturers seldom or never provide information about the power curve or torque curve because the data would not be very convincing to help sell the brand.

I still get a laugh from Brunswick. They showed the torque and power curve of their Verado engine when it was still under development to Wall Street reporters and investment firms to impress them, but when the engine was released to the public, you never saw the torque curve published anywhere. They even deleted it from the PDF copy of the investor presentation. I guess it is a trade secret.

Good luck on finding torque curves, except for Evinrude outboard engines.

Mike Kub posted 12-14-2014 03:14 PM ET (US)     Profile for Mike Kub  Send Email to Mike Kub     
I just bought a new F150 for my 18' Outrage . Thinking of the 22' for our 2 day Red Snapper season the Feds may give us this summer and don't want to buy another engine. Technical data is cool but info from someone that actually has that setup would be nice. Peace. PS put off for several years buying the new engine because did not want to spend the money , but the peace of mind is worth it .
Don SSDD posted 12-15-2014 08:29 PM ET (US)     Profile for Don SSDD    
Thanks Jim for the insight, the torque and HP curves would help a lot with all engines, marine and otherwise. Lots of bragging rights to a peak number, but its the curve that tells the real story.

Don

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