New Engine Horsepower Rating Standard 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.
Note: Engine produced before October 1, 2013 are labeled and rated by the old standard.
In most cases the engine displacement (cc) has not changed. Example: Model CH740 with 725cc, before it was rated as 27hp and will now be rated as 25hp under the SAE J1940 standard. The engine has not changed, only how it’s rated under the new SAE J1940 standard.
After a couple days of trying to locate a head assembly for a 1998 Kohler, I contacted OPE. Service was great, the rep. was knowledgeable, pricing... Read More ->
I saw some testimonials here (albeit from years ago) which suggested that OPE provided the customer with poor service, slow shipping, and limited... Read More ->
I happened to run across OPEengines while searching some hard to find parts. Their website is outstanding for finding the correct parts and at a very... Read More ->
