And with I/Os the opposite is true or so I've read ... e.g. my old '83 is
rated 185 hp (at the prop) ... rule of thumb ... add about 15% to get todays
"equivalent" which would be about 213 hp ... geez, who knows what the
horsepower will be in another 20 year ... 240? :-)

"Calif Bill" wrote in message
hlink.net...
Older motors were rated at the powerhead. New motors are rated at the
prop.
Bill

"Bob La Londe" wrote in message
...
I'm thinking about getting rid of my old Force 50 on the little boat and
replacing it with a more modern outboard. I know that not all 50HP
rated
motors will develope exactly 50HP. So, whose motor is most under rated?
I
have enough weight in the boat that every pony under the cowling makes a
difference.



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