Flowing The Intake Manifold

[Equinox]

someone wanna tell the noob (me) what vcis is?

about half this thread has been explaining what VICS is to people.

 

[TXMazdaSpeeder]

about half this thread has been explaining what VICS is to people.

i was half asleep when i asked that, i'll go back and read it again.

 

[twilightprotege]

VICS - variable inertia charge system. it's a system which allows the intake runners to hold more volume at high rpm - the effect is like a shorter runner (but it's actually longer)

 

[TXMazdaSpeeder]

ok i got it, helps to be awake

 

[PR5Matt]

Hmm... Yeah, if you have VICS, keep the setup... But if you have VTCS, like that in a P5, get rid of the thing... It's blocking flow. Generally, if you're porting out the intake manifold, you'll lose torque, and could lose gas vaporization; One trick to removing the gas problem is having the manifold ported out almost all the way, with only a thin layer of material beyond where the edge of the porting 'should be' and where it is, then get it acid etched where the walls get contacted by the gas... That gives it enough grooves and bumps to properly vaporize.

That is, if they can do that, or if you can afford it. =)

Just don't polish the s*** out of it.

 

[PR5Matt]

Id be interested in some pictures of that Flat_black. Last intake manifold I had ported was on my 2.5L SVO motor and we just walled it out as far as it would go. It was also running 26psi of boost so I dont think I really lost much low end!

Which would be better: mildly porting the us P5 stock manifold or buying the J-spec manifold??

Hey I just built my old Merkur for my brother in-law. I cut, turned, and welded the intake as well as a full porting jub. 65mm t-body etc. He is set up for 400+ whp, but He still has to get his big turbo. We are going wiht a Precision unit this summer.

Check out my website. I am going to try and get some new engine pics soon.

 

[twilightprotege]

yes, definately dont polish it to a mirror. it still needs to be roughish (like you've sanded it with 200grit sandpaper) so the air gets a very very slight turbulance through it so it mixes better with the fuel

 

[ebmp5]

what the heck is vics means

 

[ebmp5]

or vtcs what is that too

 

[twilightprotege]

variable inertia charge system

variable tumble control system

 

[peepsalot]

lol

 

[SpicyMchaggis]

From the ashes it rises.

VTCS = death.