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-   -   How VICS works. (http://www.astinagt.com/forums/showthread.php?t=16901)

project.r.racing 11-08-2010 08:22 PM

How VICS works.
 
http://i39.photobucket.com/albums/e1...yryry/Vics.jpg

Orion 12-08-2010 08:41 AM

Nice simple diagram :)

Thanks Ryan.

marcs_sp20 12-08-2010 12:18 PM

Thanks for illustration ryan :D

Now from looking at that, and with me not having VIC's butterflies/shutter valves, I would be getting double the air? :confused:

Ice88 12-08-2010 02:51 PM

Down low yes. Up high no.

Orion 12-08-2010 03:01 PM

Also, down low the velocity of the air would be lower because you do not have the VICS butterflies (closed). This might hurt your bottom end a little bit :(

Brisbane_boy 12-08-2010 04:11 PM

so its just letting more fuel into the cylinder?

Cosmo Dude 12-08-2010 04:14 PM

Quote:

Originally Posted by Brisbane_boy (Post 243463)
so its just letting more fuel into the cylinder?

LMAO title sugests an explination on how VICS works yet there is only a lame pic :p

70NYD 12-08-2010 04:16 PM

No it gives the charge correct velocity to suck itself in sort of and propagate through pipes with minimal losses. For each speed of air there is a correct diameter/length combination for maximum efficiency. This. Adresses the issue sort off

Mad Mat 12-08-2010 04:28 PM

Quote:

Originally Posted by Cosmo Dude (Post 243464)
LMAO title sugests an explination on how VICS works yet there is only a lame pic :p

bahahahaha

love it

Ice88 12-08-2010 04:32 PM

Quote:

Originally Posted by Brisbane_boy (Post 243463)
so its just letting more fuel into the cylinder?

Howd you get fuel from that diagram?

It shows what happens at specific points in the rpm range. How the runner length changes to suit the RPM band. At higher rpms the reflections should be shorter/fewer.

70NYD 12-08-2010 05:06 PM

another thing to remember is that this only works on NA applications as on FI runner lenght doesnt affect it as much. so in the high RPM range when the buttrfly is opn the suction of the engine will more likely suck through the shortest path IE the shorter runner and not that much through the longer one ;)

project.r.racing 17-06-2012 08:16 AM

Quote:

Originally Posted by marcs_sp20 (Post 243435)
Thanks for illustration ryan :D

Now from looking at that, and with me not having VIC's butterflies/shutter valves, I would be getting double the air? :confused:

i can not answer you question with another diagram!!! lol

http://i39.photobucket.com/albums/e1...yryry/visc.jpg

phildough 17-06-2012 09:25 AM

Here is a dyno graph of my engine open vs closed with the 1.8 ecu.
http://i629.photobucket.com/albums/u...s/IMG_0001.jpg


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