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Boring a flathead
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08-11-2010, 02:14 PM
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Vergil
Senior Member
Join Date: May 2010
Location: Tehachapi, CA
Posts: 361
Re: Boring a flathead
Quote:
Originally Posted by
Ol' Ron
I did some Flow work on the modified port in my book and saw very little improvement over just shaping it similar to Mike Bishops work. I square up the side of the port nearest to the block eng leaving aprox. 1/4" gasket surface. What surprised me was how well the exhaust flowed in comparison to the intake. Well within the 80%.
Ron that surprises me on the modified exhaust port shown in your book, I thought for sure it would show better flow than the results, good information.
Tim these are the pictures I have, the first ones shows where the cut was and if you need the floor of the port thickness I can get that for you. The machining on the intake ports shown in the picture was an idea for a fuel injection setup that didn't happen.
Vergil
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