A 6M will spin 7200 easy... Rev limit isnt so much in the crank as it is in the head... If you have a balance the 6M, like I have, then I see no reason you cant spin it that high...Doward said:Yep. Less force acting on the crankshaft due to more uniform balancing. I'm building this to spin 7200rpm all day long. But hey, let's not hijack Jeff's thread
Jeff get movin man, we got a deadline to meet, lol...