Lingenfelter L200010000 Lingenfelter Air Oil Vapor Separator Kit v1.1 - Manual (Page 3)

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Read the entire instruction manual before beginning installation.
LPE offers two (2) different brackets that were designed to fit the C5 and C6 corvette; however,
these brackets can be used with any vehicle in which they are necessary for fitment or
clearance. See pages 8-9 for CAD drawings of these brackets.
Not all applications require the use of a mounting bracket as the oil air seperator has a built in
adjustable mounting bracket.
Combustion gases enter the crankcase through the gap between the piston rings and the cylinder
walls. This combustion gas is often referred to as blow-by gas, or just as blow-by. Many factors impact
the quantity of blow-by gas generated but, with other variables remaining relatively constant, the
amount of blow-by gas generally increases as engine power output increases. To avoid pressure build
up in the crankcase, this blow-by gas has to be allowed to exit the engine via crankcase ventilation.
For emissions reasons the blow-by gas can’t be merely blown into the atmosphere. Instead the
blow-by gas must be redirected into the engine’s air intake system after the air cleaner. This is often
referred to as a closed crankcase ventilation (CCV) system. Systems that vent to atmosphere are
sometimes referred to as open crankcase ventilation (OCV) systems.
Due to the movement of the crankshaft, connecting rods, pistons and other engine components the
blow-by gas gets enriched with engine oil and other contaminants. Some of this oil is in very small
sub micron droplets (aerosol) form. This trapped material must be removed from the blow-by gas
before returning the blow-by gas to the engine inlet or before venting it to atmosphere. Removing the
oil from the blow-by gas is made far more difficult due to the fact that a significant portion of the oil is
in aerosol form.
In closed CCV systems on conventional gasoline engines poor combustion, compromised engine
performance, fouling of the spark plugs, and other related problems can occur if the oil and other
contaminants are not removed from the blow-by gas. In both conventional gasoline and diesel
engines alike the oil can cause oily deposits on the intake components, damage to turbochargers,
and damage to charge air coolers.
The Lingenfelter oil air separator is designed to remove the oil and other contaminants from the
blow-by gas and then allow the oil to gravity drain back to the engine. Typical oil drain back locations
include engine block ports, oil pan fitting, dipstick tube, dry sump tank and oil filler neck.
2.
Theory of Operation