The new SAE J1940 standard requires all engines produced after and including October 1, 2013 must be within 95% of the declared rated power and torque as opposed to the old standard of 85%. SAE (Society of Automotive Engineers) has also stated that the engine manufacturer must disclose the rpm for rating and with the GROSS (SAEJ1995) or NET (SAEJ1349) horsepower.
Yep. Or, EVEN WORSE, they replaced it with the Gross Torque rating , So for example people used to seeing "3.5" badge for a 3.5 HP engine, might instead see a "5.75" (wonder why the numbers were in big font and the words "Gross Torque"so much smaller?) and think they were getting a more powerful engine.... LOL!creia wrote:Is this why Briggs & Stratton stopped putting the HP rating on the recoil shrouds in the late 1980's? I remember that instead of Hp it stated the bore DISPLACEMENT - something like 127cc or 109cc for the 2 and 3 HP aluminum Koolbores.
Michael
bgsengine wrote:Yep. Or, EVEN WORSE, they replaced it with the Gross Torque rating , So for example people used to seeing "3.5" badge for a 3.5 HP engine, might instead see a "5.75" (wonder why the numbers were in big font and the words "Gross Torque"so much smaller?) and think they were getting a more powerful engine.... LOL!creia wrote:Is this why Briggs & Stratton stopped putting the HP rating on the recoil shrouds in the late 1980's? I remember that instead of Hp it stated the bore DISPLACEMENT - something like 127cc or 109cc for the 2 and 3 HP aluminum Koolbores.
Michael
38racing wrote:Crazy thing too if hp was wrong back then so the torque had to be too? So if they changed rating techniques to get hp correct they could could still put hp on label.
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