Quote:
Originally Posted by aricsx15
wat.....
smaller engine working harder, vs a more powerful motor running lower rpm and not struggling? not sure where you got that logic....
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Smaller engine would indeed NOT be working harder if it had a more aggressive prop. I concede that it would have a lower top speed, but that's not what the purpose is for; it's for pulling loads of weight. I agree pound for pound AND same prop smaller engine burns more (due to increased fuel flow/duty cycle of the injectors). HOWEVER, a properly propped small engine VS stock propped bigger engine, running the amount of weight that is becoming "standard practice", the smaller engine is more efficient (meaning, NOT wasteful).
For example, why isn't every engine a car manufacturer make a huge V8? Because putting them into a (for instance) a Volkswagen beetle would be very inefficient.
A second example, (maybe more fitting). Why isn't every 3/4 or 1 ton truck have a huge (mining style) catapillar engine capable of 3,000+ HP? Because that's not what is needed to efficiently do the task/job?
That's gets us back to why the manufacturer is putting EVER larger and larger engines into boats.... Simply put, because they can charge a higher premium for those boats which also in turn yields a higher profit margin.
So, give me my engine that I can effectively cruise at 30 mph (my benchmark, yours may vary) with as much weight I will ever put into the boat. And that's the size (smallest) that I want.