Ken I guess my brain must have died but those are really odd sounding numbers. That means the rotary valve is only open for 71 degrees of crank travel.......??? Port timing is usually from the time the port just starts to open till fully closed. Dave Phaneuf ________________________________ FormulaCar Magazine - A Proud Supporter of Formula 500 The Official Publication of Junior Formula Car Racing Subscribe Today! www.formulacarmag.com or 519-624-2003 _________________________________
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