Mercruiser hp rating correction factors
08-19-2010, 05:20 PM
#12
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That's probably a very good point. That would make the point of diminshing marginal returns look very favorably towards the 525.
08-19-2010, 06:05 PM
#13
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I respectfully disagree as the 502 Mag was rated at 415hp at the prop and the HP500 were 500 at the crank(470 at the prop)
Mercruiser sterndrive examples:
502 Mag - 415hp at the prop
454 Mag - 385hp at the prop
350 Mag - 300hp at the prop
Merc Racing examples:
HP500 - 500 at the crank
HP575 - 575 at the crank
Scorpion 377 - 377 at the crank
HP525 - 525 at the crank
I think the confusion comes into play because the 525 is always WAY more than 525 hp.
Either way I was curious as to if Merc used SAE.
Thanks
Mercruiser sterndrive examples:
502 Mag - 415hp at the prop
454 Mag - 385hp at the prop
350 Mag - 300hp at the prop
Merc Racing examples:
HP500 - 500 at the crank
HP575 - 575 at the crank
Scorpion 377 - 377 at the crank
HP525 - 525 at the crank
I think the confusion comes into play because the 525 is always WAY more than 525 hp.
Either way I was curious as to if Merc used SAE.
Thanks
If this is the case...what are the 496 Mags and H.O.s rated for at the crank?
