evac valve installation help

[fireman5166]

I just got a inline evac valve and it came with no instructions. Just wanted to know Is the red arrow go toward the motor or away?

[wobble]

Away. The arrow is the direction of air flow.

[fireman5166]

ok thanks I just didn't want to mess it up. red arrow toward air box. also I was told U don't need a filter but I see a lot of people running them.

[Jamie700R]

I see that as well. But why filter the air going out???

[SandMan812]

You wouldn't want to get sand dirt or mud in there and make it malfunction would you? That's why I run a filter on mine. 75.00 is a lot of money to me, so I don't want to chance getting any debris in it. 

[Krandall]

The purpose of the filter is to prevent crap from going in to the evac valve.. mud, sand, water, ect..  

[Jamie700R]

But it doesnt draw anything in??

[Krandall]

I understand that.. But you could make the evac valve not work if you get it full of dust.

[Jamie700R]

Understood, But the design doesnt allow anything in. So how can it get filled with anything.

[double06]

Understood, But the design doesnt allow anything in. So how can it get filled with anything.

I understand your thinking, I asked the same thing a while back and didn't really get a good answer.  I'm with you, I just don't see how anything could get in there when air is constantly flowing out?     Mine is always flowing air ou,t are yalls?

[Krandall]

Isn't there like a little "bowl" kind of thing on the top? Where stuff can rest not "inside/past" but end up resting on the valve that opens/closes? I don't think the air exiting the valve is enough to keep out water/dirt. I'll send kenny a link to this thread so we can get his thoughts.

[Jamie700R]

My valve is mounted underneath the throttle body. About an inch behind the clip that holds the evac hose. Don't know how anything could travel that far down the hose to get to it in the first place???

[wobble]

Another reason for the filter would be to quiet it down. They are kinda loud. The filter muffles the sound.

[Colorado700R]

My valve is mounted underneath the throttle body. About an inch behind the clip that holds the evac hose. Don't know how anything could travel that far down the hose to get to it in the first place???

I can't remember the guys name (on RF), but one individual did have dirt/grime inside the tube.  I think the filter just a precaution but a worthy one.

Aaron