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Valves

Jack, Marlin. Thanks for the input. I guess I should have been more specific with my question. In an earlier post, Dan Jones wrote " A lot of people blindly install 4V valves (2.19" and 1.71") in Aussie 2V heads but I don't recommend it. You want the valve size to match the port size. The larger 4V valves also hurt the transition at the short side radius. Comments? In the same post, he mentioned "bowl porting" and "unshrouding". Can you give me the basics on what is done? Is the boost in performance worth the expense? (I know its a relative question, but in your opinion.....)

[This message has been edited by Husker (edited 07-31-2003).]
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