Some guy is selling 6.5 HP go cart/minibike engines on ebay, and is saying they are higher quality than most, stating that a lot of the "cheap" engines have nylon crankshafts in them. I questioned him about it, and this is the reply I got from him:"Hello : ) Regarding nylon crank, Most engines coming out of china have Nylon cranks, Other cheap models have a lower quality steel crank both will not pass EPA Tests, Any small engine that is not EPA Certified is not EPA Certified for a reason, Ether its a made in china engine with a Nylon Crank or a low quality steel crank that will not pass the tests. Not too many small engines are EPA Certified besides Honda, J.D. Engines. There are 3 tests on small engines that the EPA tests, 500 hour, 1000 hour and 2000 hour tests. These engines are 2000 hour engines. Briggs has a steel crank but is low quality. Most of the new Powertrain engines are Nylon cranks and made in china, the older ones had steel cranks but still did not meet EPA Standards. So far the only EPA Certified engines you can buy are Hondas 5.5 HP, Hondas 6.5 HP, J.D. 5.5 HP and J.D. 6.5 HP engines in this class. Take Care, Best Regards," Now I didn't just fall off the turnip truck, and can't imagine that a nylon crank would ever be used in any kind of engine. Can anyone enlighten me as to whether this guy is full of BS, or that these "nylon crank" engines actually exist? Thanks!
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