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Old 10-17-2012, 05:13 PM
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Valve angles

between a cylinder head with say 9 degree valves and one with angles nearing 20 degrees what is the major advantage? shrouding only?

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Old 10-17-2012, 05:41 PM
How fast is fast enough?
 
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Originally Posted by birkey View Post
between a cylinder head with say 9 degree valves and one with angles nearing 20 degrees what is the major advantage? shrouding only?
A straighter path to fill the cylinder- more effective use of the valve.

One drawback is longer valves, taller, heads and intake, space requirements.
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Old 10-17-2012, 06:58 PM
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With more angle do you ever.loose piston to valve clearance
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Old 10-17-2012, 07:13 PM
How fast is fast enough?
 
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With more angle do you ever.loose piston to valve clearance
you can, depends on the head and piston.
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