TwinTurbo.NET: Nissan 300ZX forum - single point valve seat cutter
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Subject single point valve seat cutter
     
Posted by aliaZ on September 14, 2011 at 7:00 AM
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Message Saw one of these at the machine shop the other day:

[ http://www.newen.com/Pages/products/contour-bb.html ]

It allows custom seat profiles where you can blend into the throat, cut the actual seat, and deshroud the valve in one machining operation.

This is a Harley Davidson head. The intake seat face on the right has been raised .005" to add a touch of turbulence at the entry into the chamber to atomize any fuel that has puddled out on the port wall.

The traditional 3 angle valve seat cutter is obsolete IMHO

     
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