Re: Venturi vacuum pump
 

Yeah, I want to know how you know this!

And I'd like to add that I was feeling pretty saucy when I wrote my last comment. I applaud someone for doing their own work, but I was turned off by the backlash as noted by others. This setup needs no further analyzation by myself, but I think that as long as you prevent pressure from going into the crankcase, then that's a good thing.

Re: Venturi vacuum pump
 

I run my valve cover pcv line to a catch can and then from the catch can straight down open to the ground. Cars behind me gets a nice spray when I downshift.... LoL!
Every 6 months or so the can fills up and in it is sluggy water oil mixture I assume is moisture condensation with a little oil.

Re: Venturi vacuum pump
 

Iceminion, can you explain to me how this setup actually works? You're taking two pressurized sources (when at WOT), the crankcase and the intake manifold (a1 on TB), and then hooking them to a vaccum source. Why can't you just run the vent line right to the vaccum source (like stock)? I don't see how the two pressure sources merging together make evacuation any better.

Re: Venturi vacuum pump
 

Somebody reved an Integra at idle with a 60-1 turbo on it and it just about took out a friend of mine's hand quite a few years back. His hand hit the compressor inlet in a way that no fingers went in. I remember a GVR4 guy getting some finger chopped up a few years too.

Re: Venturi vacuum pump
 

Normally you go pre-turbo for a vacuum source for a breather.

Re: Venturi vacuum pump
 

If you guys plan to run your pcv lines to the intake of your turbo you better have a nicely designed baffled catch can. A unbaffled one will let a decent amount of wet crap get through and for sure within a few weeks go check your turbo intake inlet and intercooler piping and you won't be very happy at all.

Re: Venturi vacuum pump
 

I remember there was a thread about the GVR4 guy with pictures. Pretty nasty.
Also Ice Minion i think you have the new "Sandy Vagina" Subname.

Re: Venturi vacuum pump
 

We have used these catch cans before. http://www.saikoumichi.com/OCC_explanation.htm

Re: Venturi vacuum pump
 

I am going to lightly pack steel wool in my eBay catch can.

Re: Venturi vacuum pump
 

What's the price on one of these?

Re: Venturi vacuum pump
 

I am still confused on how a KV works under boost with a filter at one end...

The KVs are way too expensive. I bought a pack of 6 plastic one way valves for 1.95 that do the same thing and are good for over 100psi (enough for my turbo) hook them up like the KV in the picture and you are good to go, exept hook one end to the intake tube rather then a filter...

I get how the Venturi vucuum pump works however I question how much air it actually moves out. How much PSI have you ran on the turbo with this thing? I would think this would act as a restrictor more then a vacuum in the line.

One thing to consider is that there is a lot of blow by at a higher psi generated from the gasses expanding, not just from intake pressure from turbo. You probably new that already... but know that you need to move lots of air out of the breather valve.

However, looking at the small brass venturi pump in the picture (and the picture is kind of hard to see), it looks like you had to decrease the opening of the breather opening at the venturi pump to get the venturi pump to work...

The air that you are using to flow passed the breather opening (creating the vacuum from what I understand) is coming from the TB vacuum line.

IMO, I don't think that little vacuum from the TB line flows enough air to create the desired effect that you want. You will need a bigger line with more air flow to create the vacuum effect that you want.

But this is just my opinion. If it works, great but I would like to know the dementions of that device.

The idea is there but is the math and proper dimentions?

Re: Venturi vacuum pump
 

http://en.wikipedia.org/wiki/Venturi_effect

Just to post this again.

It is a great explanation on how the system works.

What I question is the dementions and mathamatics of Iceminion calculations

If you catch the last part of the wiki page on this, you can mix air and water pretty easy. A little modification and you could have yourself a cheap water/methonal/windshield washer fluid injection.
;)

ain't science wonderful?

Re: Venturi vacuum pump
 

As many people basically stated, can't we get the relatively same effect from buying (2) industrial check valves rated to a high PSI, that most likely work better than just the one OEM PCV, and have a "better than stock" solution to this problem.

Re: Venturi vacuum pump
 

BUT, since this air is metered, and if I have a GM MAF in blow through (before BOV and TB). If I returned vented outlet to the inlet of the turbo, wouldn't the air get re-metered? So where should that vaccum line go? Maybe I'll just keep mine in Suck through...

Re: Venturi vacuum pump
 

He is saying that there will be no vacuum after the turbo, only before the turbo will you get the vacuum needed.

Re: Venturi vacuum pump
 

Gotcha. Shane can you guys get those Saikou Michi catch cans? They appear to function well!

Re: Venturi vacuum pump
 

IceMinion here:

Sleepy: Thank you for asking questions, I would be glad to help. On a Suck-Through setup(your car/rare in the DSM world) you would take the boost from the "A1" port on your TB. Feed that into the venturi and the output for the venturi will go before the turbo and after the GM MAF, identical to a 1G/2G mas setup.

Andrew7dg - thank you for adding somethign worth-while to this thread. There has been no R&D into the actual size of the ports for the venturi, my buddy and I just pieced together parts that we felt would work, and again, on my buddys built 2.4 it solved all of our problems. I would be glad to show you how to make one, ill even give you one if you let me watch your MS-II install/wire-up on your car.

My galant has a blow through setup, so i have to take my boost before the GM maf, so anywhere after the turbo in the charge pipe section

This week is mid-terms for me in college, my spring break starts friday, will have time to get some actual boost/vacuum numbers posted up here (in case people are actually interested)

tpunx99GSX - thanks for the "Sandy Vagina" comment, this thread reminds me of junior high

blageo - thanks for banning me, i feel like i am trying to teach math to a room full of defication-flinging apes

Re: Venturi vacuum pump
 

you are actually trying to sell something that you are not explaining at all. All you are doing is bashing on the people trying to figure it out. You are not trying to teach anything.
Maybe read rule 5 on the ban a member thread.

Re: Venturi vacuum pump
 

So what is in the brass contraption? All of the higher efficiency venturi's that I have seen have been plastic. Is it an orfice or a true venturi?

Re: Venturi vacuum pump
 

You're not going to get an answer for a week.

Re: Venturi vacuum pump
 

His brother has an account too, maybe he will chime in for him :D

Re: Venturi vacuum pump
 

Whats his screen name?

Re: Venturi vacuum pump
 

I don't remember, he changed it a while back.

Re: Venturi vacuum pump
 

lol. Well, I'd be down for a GP on some cheap industrial check valves that we can rig up ourselves. Does anyone know of a website for something like that?

Re: Venturi vacuum pump
 

I still have 4 left from my mod!!!

It was cheaper to buy a pack of 6 then it was to buy 2.

I will find the website later and post it in a different forum and show the proper way of hooking it up (with catch cans!)

One key thing is that you still need a proper working PVC valve with this setup i believe.

Re: Venturi vacuum pump
 

Is there a 1 way valve on the line from A1 to your "venture" (brass T) devise? If there is this setup would not work any better under boost then stock. I do not see it working better then stock at all, you said your self the intake pipe does not make any vacuum. Also if you want to hawk your crap to the masses here contact scheides and set up a vendor account, then you will not be banned at least. If you really want a vacuum on the crank case then a mechanical pump will work better then any setup you buy from Ace Hardware.

~John

Re: Venturi vacuum pump
 

You just keep hitting the nail on the head!

Re: Venturi vacuum pump
 

Wouldn't those check valves at least be better than OEM?

Re: Venturi vacuum pump
 

Yes. Most factory PCV valves leak boost into the crankcase. I actually now have my own brand of these Krank Vents that I am testing out on my car and Scheides' car.

Re: Venturi vacuum pump
 

Kracka Vents??

Re: Venturi vacuum pump
 

LOL hell yea!

I've been a fan of Krank Vents for quite some time and I used them on my S2k with great results, but I did realize they are really expensive for what you're getting.

Re: Venturi vacuum pump
 

Wasn't this why iceminion was band for a little bit because of promoting his product?

However here are the places where I found mine.

Here are some places to buy the check valve

http://www.usplastic.com

Check valve that I have

http://www.usplastic.com/catalog/var...ant%5Fid=64175

Better check valve

http://www.usplastic.com/catalog/var...ant%5Fid=22297

another place

http://www.mcmaster.com/

Part #7775K63



or the MitsuStyle Kracka Vent :cheer:

Re: Venturi vacuum pump
 

I don't have anything for sale. Thats enough about these in this thread though...more to come in a few days when I make a new thread with more info :)

Re: Venturi vacuum pump
 

I like the price of those plastic check valves. I wonder if they will really hold 150psi without blowing out? I am slightly concerned about their ability to function once they get some oil sludge build-up though.

Re: Venturi vacuum pump
 

Just be carefull with the "my products for sale" part of this discussion. We have rules. :wink:

Re: Venturi vacuum pump
 

I know the rules; I don't currently have anything for sale nor did I offer to sell anything to anyone :D

Re: Venturi vacuum pump
 

I will be selling rides in my car once it's done, is that against the rules here?

Re: Venturi vacuum pump
 

Have been tested at 80psi, no leaks. I think with my car at 15 psi, it will do just fine.

Catch can should take care of oil sludge build up. It also states that it is a gas/liquid check valve.

For the price, if it does fill up with crud, I will put another in, I have a couple of these when I ordered them. They are that cheap!

aren't you worried what will happen if yours fill up with crud?

What is in your metal check valve that makes it seal? It is a metal seal? Plastic? rubber? you should cut one in half to show how it works:D

Re: Venturi vacuum pump
 

There is a place near my house that manufactures check valves, I should check them out! www.specialtymfg.com

Re: Venturi vacuum pump
 

i have mine setup the same way yinyang does, and get the same results i was gonna weld a tube into my exhaust to create suction at all levels.
I was reading a post on some other site about doing it, apparantly a lot of people have been doing that for a long time.