ric wrote:
neutron wrote:
whenever a manufacturer posts Engine HP/torque figures its at the crank same with Volvo. The reasoning for them is for a marketing point ,so they give you the "inflated" number. Itr always has been that way. same with motorcycles and pretty much anything with an engine.
If you call Volvo or Mercruser and get the right person on the line they will confirm this
I am not trying to get in some pissing match but I know this stuff for a fact. I work in this buisness. and do plenty of training to be updated with facts.
I live, eat, and sleep engines of all kinds. And I am great at what I do.
They passed a ruling or law a few years ago. All marine engines (outboard, sterndrive, inboard) HP ratings are all at the prop.
Since drives don't have a reduction ratio that I'm aware of, whereas all vehicles final drives are reduction, how can these HP ratings that you come up with even compare Ric?
Advertised HP ratings are measured by an engine brake dynomometer at the crank, period.
As for that 275 you expect, aint gonna happen with your list. You have to understand that when the performance companies say their parts will add up to so much HP, the key operative words are "will add up to", nothing more. So when they say, it will add up to 30 HP, realistically, you might get 10. They only way you'd get that 30 HP would be if the rest of the engine was radical, tested at sea level with perfect barometric pressure, humidity and so on. Bolt on HP as advertised and what you REALLY get are two very different things, period.
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