Quote:
Originally Posted by freebeard
Can you put a date to "Motoman"? Because until I hear that, I'd go with Jocko Johnson, Zora Arcos-Duntov, and that guy I can't remember that did head porting in California in the 50s.
HotVWs Mileage Motor had larger exhaust valves and fuel injection intake valves (because they're smaller) for that reason.
Then there is Extrude Honing where you let hydraulics do all the thinking/guessing for you.
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Motoman started his website (mototuneusa D0T c0m) in 1999 and it appears it was last updated in 2011. I'd post links, but i'm a noob, so i'm prevented from doing so. PM me for links.
Extrude Honing works great for removing casting imperfections especially in places where a porting tool will not reach.