Boat Value
#31
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You gentlemen need a little clarification here. First, all Mercury Racing Engines, 500EFI, HP525, HP500, etc. are hand built in Fondulac Wisconsin at the Mercury Racing Plant. They start with just parts and blocks and build the engines from the ground up. They dyno them and rate the horsepower at the PROP, not the crank! for example a Mercury Racing HP525 makes approximatly 540HP at the crankshaft and 525HP at the propshaft.
Mercruiser (black motors) Mercruiser, a different company division of Mercury receives standard GM Powertrain engines at their plant in Stillwater, Oklahoma, accessories them with Mercruiser external parts, sprays them BLACK and ships them to the builders and buyers. These GM Powertrain factory built engines are the same ones GM ships to Volvo, Crusader, etc and GM dyno's and measures the horsepower on these engines at the crankshaft! Hence, all black Mercruiser motors that come from Stillwater, Oklahoma are producing and are listed as horsepower at the crankshaft, period !!
I hope this puts this question and mis-statements to bed for the last time!
Regards,
Ray @ Raylar
Mercruiser (black motors) Mercruiser, a different company division of Mercury receives standard GM Powertrain engines at their plant in Stillwater, Oklahoma, accessories them with Mercruiser external parts, sprays them BLACK and ships them to the builders and buyers. These GM Powertrain factory built engines are the same ones GM ships to Volvo, Crusader, etc and GM dyno's and measures the horsepower on these engines at the crankshaft! Hence, all black Mercruiser motors that come from Stillwater, Oklahoma are producing and are listed as horsepower at the crankshaft, period !!
I hope this puts this question and mis-statements to bed for the last time!
Regards,
Ray @ Raylar
And Ray had such high hopes for the information he went to all this trouble to post here for your benefit.
![Frown](/forums/images/smilies/frown.gif)
Nap time is over Ray.
![Big Grin](/forums/images/smilies/biggrin.gif)
Last edited by RaggedEdge; 03-24-2008 at 12:02 PM.
#32
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Join Date: Jan 2004
Location: San Diego, California
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Well I might as well make some money here. I've got $100 bucks here that says the stock Mercruiser 496HO does not make 425HP at the propshaft but makes 425HP at the crankshaft.
Any takers here?
This may start them naping again.
Best Regards,
Ray @ Raylar
Any takers here?
This may start them naping again.
Best Regards,
Ray @ Raylar
#34
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And I'll take another $100.00 on this as well. Anyone in for the double or nothing deal?
I do believe Ray and I are going to cash in here.
![Big Grin](/forums/images/smilies/biggrin.gif)
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