Flowing The Intake Manifold

[Equinox]

Andy Wagner from www.wagnermotorsports.net said he is gonna start the project in january It will be going on my car when it is done and ready.

sounds good, I was gonna get it done custom but if he is gonna do the research I'll be willing to buy the second one.



Also how come all these guys are talking about the VICS system and not the VTCS system, cause they are two different things.

 

[Installshield 2]

I was wondering the same thing...

 

[Little Beavis]

sounds good, I was gonna get it done custom but if he is gonna do the research I'll be willing to buy the second one.

What makes you think you've got dibs on the second one?

 

[Turbo Matty P]

would these only benefit turbo cars? I thought this discussion was about porting a stock manifold??

 

[Little Beavis]

It would benefit any car. . .

 

[Turbo Matty P]

wow, I've not seen many tubular manifolds that improve both top end and bottom end on NA cars. This would be a first for me. I thought that was the point of having the design we have already. To increase bottom and top end through switchable runner lengths. I know this works because at 3900rpms on my taurus the secondaries open up and the tires break loose again. On my tubular civic manifold it seems to have a good topend pull but nothing in the bottom.

 

[Installshield 2]

It would benefit any car. . .

Not always...I can almost garuantee with a tubular manifold on an NA car you will loose lowend (at least on protege's), unless the stock manifold was shorter to begin with...

a built NA protege would probably significantly gain a peak hp with a tubular intake manifold, but it won't gain lowend....So you are right that it would probably benefit any car overall, but not lowend torque...

 

[twilightprotege]

uhh no

VICS butterflies are CLOSED when it is NOT engaged... air goes to the narrow LONG runners at low RPM... at high RPM, the VICS butterflies open and allow the short runners to be opened up... BOTH runners are used at high RPM... it does NOT work like a "switch to that pipe" thing

are you sure??? have you taken the intake mani off and had a look??

maybe i have a different version of the manifold but i do not have two runners. it is exactly like how i explained it. i have a single runner with what i like to call the VICS chamber (you could almost call it a resonator...it's that sort of a design)

edwin, are there different manifolds around the world??? dont tell me i've got another j-spec item....

 

[Installshield 2]

are you sure??? have you taken the intake mani off and had a look??

maybe i have a different version of the manifold but i do not have two runners. it is exactly like how i explained it. i have a single runner with what i like to call the VICS chamber (you could almost call it a resonator...it's that sort of a design)

edwin, are there different manifolds around the world??? dont tell me i've got another j-spec item....

Is this chamber on the top of the intake manifold, possibly with a black box on it? North American manifold don't have anything mounted on top chamber wise...You just see the runners folding back under itself...The J-spec ones have a rectangular box on the top of the runners...I haven't looked inside of either though, so my info stops there....

 

[twilightprotege]

there is nothing on top of the manifold i'll draw a crappy version of what my intake mani looks like from the side on paint...hang on

 

[twilightprotege]

good thing i'm not a graphic designer....

i hope that explains what i have. the vics chamber is not open anywhere but where the VICS butterfly (in red) is

 

[TheMAN]

 

[twilightprotege]

on the bottom half of the intake manifold - the one of the left. the round holes. they go no where on my intake mani. they are not open to anything at all, hence why i call it the VICS chamber.

pls explain, is this what everyone has or do i have something different?????

 

[flat_black]

Maybe the 323 Astina has a different intake manifold than the Protege5. Huh. We don't have VICS over here, we have VTCS... The MP3 had VICS, though.

 

[70]

The current North American Protege has both VICS and VTCS. The MP3 does not have VTCS.

 

[twilightprotege]

yeah i dont have VCTS, only VICS - just like the mp3

 

[Little Beavis]

Not always...I can almost garuantee with a tubular manifold on an NA car you will loose lowend (at least on protege's), unless the stock manifold was shorter to begin with...

a built NA protege would probably significantly gain a peak hp with a tubular intake manifold, but it won't gain lowend....So you are right that it would probably benefit any car overall, but not lowend torque...

I agree 100% but I was trying to keep it (really) short.

Also, since we all have VICS, what's to say we don't make a manifold that uses that system too! Best of both worlds. . .I'm already whipping out the crack pipe. . .I'll have an idea by dawn!

As for our manifold the VICS chamber is nothing more than a way to have longer runner by allowing cylinder 1 to steal air from the other cylinders during the intake stroke by sucking air out of the VICS chamber. So, at the moment #1 is on the intake stroke it can draw air from all four runners essentially.

 

[twilightprotege]

i didnt think of it that way.... sounds like a messy way to get more air

 

[KzA]

bumpppy bump....its february...

 

[TXMazdaSpeeder]

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