Reply to thread

Message: [QUOTE="jaguar, post: 1407858, member: 19340"] I wish I had $170 to splurge. That's the reason I am asking here, it's w/o cost! What's weird is Jennings emphasis on the combo of port timing and area dates way back to 1973 (year of my first bike: a Penton 125). But no one ever references it. Why? But maybe the good engine porting software programs include this calculation. I am using this formula to report my 48cc engine. Previously I had just ported by timing derived from recommendations by Eric Gorr. Now I am including the port area. [/QUOTE]