notsed Posted July 22, 2012 Report Posted July 22, 2012 can anyone give me a ball park on jetting a 421 serval with stock carbs, t5's, +2 timing, toomey 2-1 filter, 600' asl, 80-90* weather, running 94 octane, 155lbs comp Quote
dirtydownunder Posted July 22, 2012 Report Posted July 22, 2012 start at 340-350 main, 27.5 pilot and stock needle in middle clip. Quote
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