Rocket

This is a good diagram for discussion of velocities in an intake port such as the BVTEC intake.

Red is higher velocity, blue is slower.

Very instructive to help understand where to concentrate efforts when endeavoring in porting/polishing.

Discuss, listen, think,...LURN.

FO-SHIZZAY!!!

d15Beta

cool! nice to see the VJ area , short turn.. and valve seatface/back cut has alot of RED

hmm

DB2-R81

Was that done with H20 colours or oil?

Rocket

Assembled one molecule at a time with a neural network of CRAY supercomputers using nano pliers at IBM nanotechnology labs.

Fabinacci series validated growth of fractals of irrational and imaginary number vectors with eigen values for solutions of dynamic systems. Stephen Hawkings and Ben Afflick double checked my work. Should be somewhat suitable for use here in H-T.

Up next is unification of super strings and membrane theories of infinite parallel universes, right after CAPM modeling of equilibrium asset pricing.

WrongWD

iTrader: (1)

is this a b16/R head or a gsr?

very cool, regardless

Rocket

Neither, it's a modeled port.

Combustion Contraption

12 Dimension String Theory

Interesting that the port has what looks to be a decent amount of short turn and theres still da tell-tale velocity spike at the apex. BUT OH NOZ, if you lay it back, ull kill da low-lift!!one11

Rocket

Oh snap, datz why da VTAK pop only sputterz now. Need to put a trip strip dere and some vortex generaterz to bring it back to laminar, too much shearing. Fuel gonna fall out of da stream.

d15Beta

isnt that where a good (porter) canadjust/massage the short turn, and give a commplimentary VJ (whatever it is, throat size/angle to bottom cut angle etc)

that could help recoup the killed low lift flow? and maybe gain sum up top mid or high lift?

well i hope im grasping the concept correct haha

shifty35

MoTU,

Can you run that FEA for several different valve lifts for us?

Rocket

I'll see about getting a low lift, mid lift and high lift diagram. Thank you for not asking if this shiatt was hand drawn. I am all in for humor but that was deserving of a Singaporian lashing.

:thumbs up:

bluedlude

nice, I like pretty colors! is this a worked port?

and its eigen foo

delsolproblems

The 2-D map is difficult to work with as we are not taking into account how the sides are affecting flow or how changes to the map we are using will affect flow on either side. This becomes more of a problem when considering ports not perpendicular to the side of the head they enter from.

delsolproblems

What we're looking for on this map is not necessarily to increase velocity but to make the velocities we're looking at more uniform, which will increase overall flow. When air encounters an obstruction, it increases in speed. However it's fairly obvious that we want to avoid obstructions. So who can make the picture all one color?

logg_frogg

if you make the map all one colour won't the fuel fall out of the stream?

D shaped ports FTW?


maybe we need a section in the other direction of said modeled port

Conan the Destroyer

is that the principle you were using while you "ported" this head here?




cheers. maybe this was the "V1"?

Rocket

You get a cookie!!! I'll correct da spelling.

Rocket

:thumbsup:

Rocket

:thumbsup:

D shape works good where there is a _________ .

Rocket

LOL, that's the old me--now alot leaner.

I had some very good teachers influence my porting. My biggest complement was that I was a very good student and learned quickly.

Have you found your external hard drive with da thousand time slips etc? Sounds like you got da _________ syndrome.

Vengeance

Turn...

Conan the Destroyer

ive got slips and pics, and ive got more of rocket bob, picking into that metallic termite mound with his electric rotary stick inside his cave.


let me know, good student.

sscrx

I dont post much, but these post's lately have been breath of fresh air in here

bluedlude

man I am so sick of you flaming up any and every decent post thats on this forum. someone ban this useless jackass already.



rocket, what software are you using for the CFD? does using different velocities have a pronounced effect on the areas of interest?

Conan the Destroyer

so where are you when rocket sits around calling people lower primates? do i need to quote them all?