Cam cover venting
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From: Houma, LA.
Cam cover venting
I'm thinking of venting both cam covers while I'm installing my "FastMurphSupermodel" Kit on my car. What do you think? Seems like letting the pressure out of 4 holes rather than 2 would be better? Wouldn't have to worry about oil climbing as far? 
Progress pictures from "Da U Boat"
Progress pictures from "Da U Boat"
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From: Las Vegas
Yup, the more air you can let out the better...the more you can seperate it enroute the better also. DR has a great seperator for sale.
Which is easier to blow through...2 straws or 4? simple answer.
Its all dependent on the health of your motor as well, but the more pressure thats created in your crank case the more you have to relieve....you will blow the oil ring on the oil dipstick...seals..valve cover gaskets if it isnt vented well enough.
while you have it out, do all 4.
Let us know how it runs on the 30lb injectors.
Also. PLEASE PLEASE pressure check the fuel fittings that go into the BEGI unit. Turn the fuel pressure up to atleast 80-90 psi and check for leaks. Many will check the system but they dont check it with the regulator bumping the pressrue up....you want it to build the pressure you could see in everyday runnng under boost. Most check it at idle pressures.
I LOVE the GREY! that was my second choice after RED.....a wrinkle/matted grey . Nice to see it done
Which is easier to blow through...2 straws or 4? simple answer.
Its all dependent on the health of your motor as well, but the more pressure thats created in your crank case the more you have to relieve....you will blow the oil ring on the oil dipstick...seals..valve cover gaskets if it isnt vented well enough.
while you have it out, do all 4.
Let us know how it runs on the 30lb injectors.
Also. PLEASE PLEASE pressure check the fuel fittings that go into the BEGI unit. Turn the fuel pressure up to atleast 80-90 psi and check for leaks. Many will check the system but they dont check it with the regulator bumping the pressrue up....you want it to build the pressure you could see in everyday runnng under boost. Most check it at idle pressures.
I LOVE the GREY! that was my second choice after RED.....a wrinkle/matted grey . Nice to see it done
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I've talked to Louie about this issue just a bit..and he suggested the following..
If you can vent out the oil filler area then that is best..as it is direct to the lower crankcase and a "large pipe".
Next you can vent out of the drivers side cam covers since the oil doesn't get sloshed up on that side..hence less oil to pull out of the air.
finally vent out of the passenger side but be prepared to separate the oil from the air...
DR's setup with both valve covers venting into the Mann air/oil separator is nice..
Later,
Tom
89GT
If you can vent out the oil filler area then that is best..as it is direct to the lower crankcase and a "large pipe".
Next you can vent out of the drivers side cam covers since the oil doesn't get sloshed up on that side..hence less oil to pull out of the air.
finally vent out of the passenger side but be prepared to separate the oil from the air...
DR's setup with both valve covers venting into the Mann air/oil separator is nice..
Later,
Tom
89GT
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From: Bountiful, Utah
I have designed an air/oil separator that fits inside the cam covers and use both cam covers as air inlets with small K/N style filters on them. I pull the air out of the oil filler and through another air/oil separator using a vaccum source like a venturi in the air pump intake or prior to the supercharger in the air intake. When on boost the separators in the cam covers will allow venting if the blow by is excessive (they are still pink after a year of running) and it evacuates the crankcase under normal driving conditions. This system has eliminated blowby and oil vapor smell perfectly on the ones I have used it on.
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From: Houma, LA.
Originally Posted by Ketchmi
I have designed an air/oil separator that fits inside the cam covers and use both cam covers as air inlets with small K/N style filters on them. I pull the air out of the oil filler and through another air/oil separator using a vaccum source like a venturi in the air pump intake or prior to the supercharger in the air intake. When on boost the separators in the cam covers will allow venting if the blow by is excessive (they are still pink after a year of running) and it evacuates the crankcase under normal driving conditions. This system has eliminated blowby and oil vapor smell perfectly on the ones I have used it on.
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Road Warrior
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ck out the gts setup.. it uses a different filler neck, dual breathers on the valve covers and cross tubes for equalization, different baffles too... my motor is as dry as a bone now and zero oil consumption too... 
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From: The Great Northwest
I used DR's GTS set up on my SC GT. Through about 3k miles and 1/2 
track day I consumed no oil.
track day I consumed no oil.
Originally Posted by 928SS
ck out the gts setup.. it uses a different filler neck, dual breathers on the valve covers and cross tubes for equalization, different baffles too... my motor is as dry as a bone now and zero oil consumption too...
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Originally Posted by Ketchmi
I have designed an air/oil separator that fits inside the cam covers and use both cam covers as air inlets with small K/N style filters on them. I pull the air out of the oil filler and through another air/oil separator using a vaccum source like a venturi in the air pump intake or prior to the supercharger in the air intake. When on boost the separators in the cam covers will allow venting if the blow by is excessive (they are still pink after a year of running) and it evacuates the crankcase under normal driving conditions. This system has eliminated blowby and oil vapor smell perfectly on the ones I have used it on.
Gee Dave, that sounds like a really great idea.
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When applying vacuum to the crankcase, how much is enough and how much is too much?
I had read some articles in the past on the effect of using a vacuum pump to evacuate the crank case and they dynoed that it increased power output to a point. They were using a Moroso belt driven vacuum pump and some means to regulate the vacuum. Being belt driven the vacuum would change with rpm which could be a detriment in creating excessive vacuum or an improvement by puling more vacuum when the engine is creating more internal pressure.
At some point though I would think too much vacuum would promote piston ring leakage during the compression stroke, and have a negative impact on the slung oil that is needed for the cylinders, wrist pins, etc.
I had read some articles in the past on the effect of using a vacuum pump to evacuate the crank case and they dynoed that it increased power output to a point. They were using a Moroso belt driven vacuum pump and some means to regulate the vacuum. Being belt driven the vacuum would change with rpm which could be a detriment in creating excessive vacuum or an improvement by puling more vacuum when the engine is creating more internal pressure.
At some point though I would think too much vacuum would promote piston ring leakage during the compression stroke, and have a negative impact on the slung oil that is needed for the cylinders, wrist pins, etc.
Drifting
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From: Bountiful, Utah
I don't use enough vaccum to create any horsepower gains, that is done with a sealed crankcase and racing conditions, not normal street useage. All I'm trying to do is control oil vapors.
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All the info will soon be on our website as well as prices.