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Golf balls, hot redheads, and Rob's fourth Metro...

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Old 12-22-2009, 08:59 PM
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Default Golf *****, hot redheads, and Rob's fourth Metro...

... got me to do some Googling.

Name:  dimpledvalves.jpg
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Discuss.
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Old 12-22-2009, 09:12 PM
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The exact same reason golf ***** have dimples. They need to be hexagonal!
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Old 12-22-2009, 09:20 PM
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are these intake and exhaust or just one or the other from what you have seen?
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Old 12-22-2009, 09:31 PM
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Interesting...




Where's the redheads?
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Old 12-22-2009, 09:37 PM
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Old 12-22-2009, 09:42 PM
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In real world, I wonder if the dimples just end up trapping carbon and getting crusty?
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Old 12-22-2009, 09:59 PM
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I first pondered the idea of having dimpled ports when I was in highschool, I never thought of doing it to the valves.
I was thinking strictly from a flow standpoint, but Id imagine dimpling the valves ma have some other implications
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Old 12-22-2009, 10:06 PM
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Originally Posted by Ben
In real world, I wonder if the dimples just end up trapping carbon and getting crusty?
+1
First thought I had when I saw them too.
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Old 12-22-2009, 10:17 PM
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Originally Posted by Ben
In real world, I wonder if the dimples just end up trapping carbon and getting crusty?
probably, curious about possible gains though, can't imagine it would be much
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Old 12-22-2009, 11:11 PM
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if there isn't developed, laminar flow at the back of the valve, they'd do nothing.

if flow is interrupted by, say, a shaft and forced around a corner, it's probably no longer laminar at the boundary layer.

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Old 12-22-2009, 11:11 PM
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better fuel economy according to mythbusters....
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Old 12-23-2009, 10:37 AM
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Originally Posted by johnwag
better fuel economy according to mythbusters....
on the outside of a car....?
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Old 12-23-2009, 10:41 AM
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I refuse to debate the topic until more red head evidence is introduced.
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Originally Posted by concealer404
Buy an MSPNP Pro, you'll feel better.
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Old 12-23-2009, 10:56 AM
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Old 12-23-2009, 11:13 AM
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Redhead?
Attached Thumbnails Golf balls, hot redheads, and Rob's fourth Metro...-big.jpg  
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Old 12-23-2009, 11:58 AM
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I dated a girl with a red head.. No hair, just a red head. Burnt up in a trailer fire.
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Old 12-23-2009, 12:20 PM
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Originally Posted by adamhershner
I dated a girl with a red head.. No hair, just a red head. Burnt up in a trailer fire.
no.
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Old 12-23-2009, 12:22 PM
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Old 12-23-2009, 12:48 PM
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yes.
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Old 12-23-2009, 02:01 PM
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If regular valves carbon up, let's give it something better to grip onto.

And Y8s is an acoustical engineer, so I agree with him about the laminar flow.
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