Plenum and Porting porn!!

[Johnny5]

sexy, post a pic of your dogs sack Dempsey lol

[oricale]

Johnny, you genuinely scare me sometimes😂😂😂

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[ZRapid-1]

Originally Posted by oricale

Yeah I like it!..I was trying to design a color that represented the Dragon Heart (DH) packages we do��

This picture reminds me of a Blood Eagle - Vikings fans will know.

[oricale]

Yes.....I do know...🤔

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[XfireZ51]

Dempsey,

Is there any indication that the mirror finish helps flow? My understanding was that u want some tumble in the runners. Also, that w a mirror type finish, it would actually form a slower layer along the sides of the runner.
What's been ur experience?

[oricale]

X fire, as of now they're is no indication that I have of a beneficial difference between machine and polished, there is arguably more flow with mirrored finishes,(and I have heard of the polished walls causing interference with laminar flow in some instances . Also, you should not mirror finish after the injector do to Atomization of fuel on a correctly machined surface.I do feel though there are some clear benefits to a polished finish as carbon will not stick to either the intake runners nor the exhaust ports freeing valuable space. Also,the Surface is much more uniform that isn't clear to the naked eye.... With that being said we are flow benching all the different options when it comes to size, surface, and variance between intake runner size, IH size, and then head size..( something like a coned 36.5 mm to 34.5mm Port)36.5 millimeters at the intake runners 36 mm at the IH's and 34.5 at the bottom of the heads(all smoothed and port matched) creating some velocity at the valves. With that being said. All these sizes of these ports would be dictated by cams, size of engine ect.

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[George Maz]

Originally Posted by XfireZ51

Dempsey,

Is there any indication that the mirror finish helps flow? My understabding was that u wantes some tumble in the runners. Also, that w a mitror type finish, it would actually form a slower layer along the sides of the runner.
What's been ur experience?

Exactly right.
Learned this concept as hydrodynamics, race boats have sanded bottom, not waxed. Also why a golf ball is dimpled. It's a lot of extra work, for nothing gained. Looks awesome if your standing inside the plenum.

[oricale]

Here are the last link in the chain!..Heads ported from 36.5 down to 34.5 in the throat, guide bosses removed,and with a finished surface of .060 grit[emoji106] [emoji6] ..

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[oricale]

Just finisning up top ends for Vette73 and Mr. Obrien, as well as Mr. Daniels and Mr. Baden. These are done in a Blade Silver Metallic. These are Ported to 36mm and Powdercoated.

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[9T1 Red ZR1]

That looks fantastic! I can't wait to get the Beast back!!
Bill