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Elite Engineering · 06-15-2018, 03:24 PM

Hi BradySS,

I would be interested in which "Pro Guys" you think are doing this? Our Tech Support team is full of Professional racers and engine builders and confirm this. The only way is with a vacuum pump pulling suction and then exiting into a breather can like you describe. Can you show any type? We crew on Formula cars as well and none vent like your describing, all use either a belt driven standalone vacuum pump as the OP asked about, or a vacuum module in the external dry sump pump assembly. See by eliminating evacuation, and venting pressure, your leaving almost all of the damaging compounds to settle and contaminate the engine oil along with the pressure fighting the pistons on the down stroke. Use of a 95% effective catchcan system, like our Elite E2-X is not allowing oil or any of the other compounds to enter the intake air charge.

Here is a Moroso vacuum pump and the catch tank you plumb into the exit of the pump:

Aerospace Components:

To not use a vacuum pump and just run hoses from each valve cover releases pressure AFTER it builds and no evacuation takes place at all. Your allowing excessive premature wear over time by not evacuating these from the crankcase prior to them settling. Then as your not pulling full time suction, you run into ring flutter issues that wear the ring leading edges as well as small divots over time in the cylinder walls. What your in essence doing is what was the industry standard from early 1900's to the mid 1960's. Off road and racing still vented until the 1980's. Since then, only those that do not understand just use assumptions. And there is so much more to consider. The PCV/Crankcase evacuation systems provide several critical functions and only one is pollution control related.

Look at GZ as a vacuum pump that some use on the street as well.

I hope this makes sense.

06-15-2018, 03:24 PM	#5
Elite Engineering Drives: 2010 Camaro Join Date: Nov 2009 Location: Denver Posts: 1,382	Hi BradySS, I would be interested in which "Pro Guys" you think are doing this? Our Tech Support team is full of Professional racers and engine builders and confirm this. The only way is with a vacuum pump pulling suction and then exiting into a breather can like you describe. Can you show any type? We crew on Formula cars as well and none vent like your describing, all use either a belt driven standalone vacuum pump as the OP asked about, or a vacuum module in the external dry sump pump assembly. See by eliminating evacuation, and venting pressure, your leaving almost all of the damaging compounds to settle and contaminate the engine oil along with the pressure fighting the pistons on the down stroke. Use of a 95% effective catchcan system, like our Elite E2-X is not allowing oil or any of the other compounds to enter the intake air charge. Here is a Moroso vacuum pump and the catch tank you plumb into the exit of the pump: Aerospace Components: To not use a vacuum pump and just run hoses from each valve cover releases pressure AFTER it builds and no evacuation takes place at all. Your allowing excessive premature wear over time by not evacuating these from the crankcase prior to them settling. Then as your not pulling full time suction, you run into ring flutter issues that wear the ring leading edges as well as small divots over time in the cylinder walls. What your in essence doing is what was the industry standard from early 1900's to the mid 1960's. Off road and racing still vented until the 1980's. Since then, only those that do not understand just use assumptions. And there is so much more to consider. The PCV/Crankcase evacuation systems provide several critical functions and only one is pollution control related. Look at GZ as a vacuum pump that some use on the street as well. I hope this makes sense.