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Original Message
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RE: Oh, it's the old SAE vs old Ford rating again.... |
By Bob - 11/06/2001 11:22:45 PM; IP 65.80.204.157 |
Every automobile manufacturer prior to 1971 or 1972 advertised their vehicle engines at gross horspower. One of the Federal emission rules that came out at about that time made all of the vehicle manufacturers rate their engines at net horsepower, i.e., make the engine test with the fan water pump, the as it be will be installed exhaust manifolds and header pipes, alternator, and all other pumps, belts and pulleys typically installed with the motor when measuring the power produced.
This reduced all horsepower ratings for all engines for all manufacturers not just Ford. Its not an SAE verus NET rating, its a Federal rule about advertised horsepower and how it will be measured.
I do believe that SAE developed a standard that covers this so that the manufacturer's would follow a more definitive guideline that the vaguely written Federal outline however. |
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