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How much does this improve ....

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Post  bruno March 18th 2015, 4:22 pm

Dimpling cylinder heads ?

How much does this improve .... Dimple%20cylinder%20head%20porting_zpsmruynibc

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Post  rmcomprandy March 18th 2015, 5:35 pm

bruno wrote:Dimpling cylinder heads ?

How much does this improve .... Dimple%20cylinder%20head%20porting_zpsmruynibc

None, for power ... a tiny bit for fuel efficiency.

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Post  bruno March 18th 2015, 8:25 pm

i guess its perception, it just looks expensive. Thanks Randy.

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Post  FalconEh March 18th 2015, 9:21 pm

bruno wrote:i guess its perception, it just looks expensive. Thanks Randy.

and I am sure it is...but just because it's expensive doesn't mean it works!
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Post  dfree383 March 18th 2015, 9:29 pm

I'd think it would be of some benefit in some application, it could be used to move air around if done selectively. But im with Randy.
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Post  Larry T March 18th 2015, 10:11 pm

nice place for bats to roost Razz
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Post  cletus66 March 19th 2015, 2:54 am

Looks like golf ball technology.
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Post  bruno March 19th 2015, 7:15 am

cletus66 wrote:Looks like golf ball technology.  

interesting reading

http://www.speedtalk.com/forum/viewtopic.php?f=1&t=35343

http://www.formula1-dictionary.net/dimpled_surface_finish.html

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Post  GT300TD March 19th 2015, 9:31 am


Don't mean to crash this thread, but this would seem to be the opposite of polishing. Does polishing help or hurt the flow? Also should the runners of the intake manifold be smooth or a little rough? I've heard it both ways and I need some closure haha confused .

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Post  gas6999 March 20th 2015, 7:14 am

the purpose for this finish is to keep a small amount of turbulence in the runners to keep the fuel and air mixed,, does it work?????

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Post  rmcomprandy March 20th 2015, 11:03 am

gas6999 wrote:the purpose for this finish is to keep a small amount of turbulence in the runners to keep the fuel and air mixed,, does it work?????

For reducing the thickness of the boundry layer and keeping more fuel in homogenous suspension ... it works. This will help with fuel efficiency but, in itself, won't add any more power.

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Post  richter69 March 20th 2015, 7:00 pm

about like dimples on a set of ass cheeks........
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