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 Post subject: Vent tube
 Post Posted: Sun Dec 26, 2010 1:53 pm 
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I talked to the guys at Titan and they suggested putting a vent pipe from the valve cover to the fuel pump plate..This will help get some of the oil from the valley back in the pan...How it will do that I don't know but I went ahead and did the plumbing....Not to much $$$ to do as I just needed a couple of fittings and a couple of bungs....I made the block off plate out of a piece of 1/4 aluminum and had Tony "Ant" weld them up for me...
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 Post subject: Re: Vent tube
 Post Posted: Mon Dec 27, 2010 8:42 am 
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I'd be interested in hearing how or why that works. I have some theories but not sure I am looking at this the right way.

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 Post subject: Re: Vent tube
 Post Posted: Mon Dec 27, 2010 10:48 am 
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I did forget to say that it's necessary if you have a belt drive as it really blocks off the vent in the front and not a bad idea even if you don't have a belt drive...

Interested to here what you are thinking about this.. =;

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 Post subject: Re: Vent tube
 Post Posted: Mon Dec 27, 2010 2:34 pm 
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I got one of those connected to my Evac system.

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 Post subject: Re: Vent tube
 Post Posted: Sun Jan 09, 2011 11:33 pm 
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Let's see: High pressure goes to low pressure!!
If you have all those block screens in the block you have blocked air flow when they are coated with oil.
Keeps the air pressure at the pump suction side balanced.

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 Post subject: Re: Vent tube
 Post Posted: Sun Jan 09, 2011 11:53 pm 
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The Blowby air from the poor ring seal has to go somewhere so it goes up the valley and up the holes in the heads and out the breather or the evac system etc. When the air is going up these passages the oil cant go back down to the sump. So this vent tube reduces the amount of air flowing up the passages by giving it a more direct pathway from the sump to the breathers.
Thats how it works.


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 Post subject: Re: Vent tube
 Post Posted: Mon Jan 10, 2011 1:37 am 
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Where did you get the hose you used for that Barry?

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 Post subject: Re: Vent tube
 Post Posted: Mon Jan 10, 2011 5:33 am 
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Mark, I got the hose from Mark Rapp...http://www.rappracingengines.com/
It is Star Vacuum Hose.. =;

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 Post subject: Re: Vent tube
 Post Posted: Mon Jan 10, 2011 8:34 am 
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Thanks Barry!

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 Post subject: Re: Vent tube
 Post Posted: Mon Jan 24, 2011 3:50 am 
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Ken....Got any more details or pics of how your evac system is plumbed? Are you using a header evac kit?

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 Post subject: Re: Vent tube
 Post Posted: Mon Jan 24, 2011 9:18 am 
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Yeah got a fitting in the FRONT side of each valve cover that is connected to an Evac fitting on each exhaust line all the way back after the mufflers. The hose that I connected to the fuel pump boss goes up into an oil separator mounted on the roll cage bar that goes to the front of the frame then is plumbed in the bottom of that canister so that any oil that makes it up into that line will drain back into the crankcase. Then there is a line coming out of the top of that canister and it goes down and is "T"ed into the line that comes from the valve cover. Never actually measured the vacuum on that system but I have sucked a valve cover gasket IN before.

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