|
Known as Oil catch cans, fairly common if you search Google but make sure you get the type you want and many times you get what you pay for but there are also many overpriced ones out there. A real must on Turbo cars as they tend to get more crankcase blow-by. The ub-burnt or partially burnt gases have the effect of lowering your octane when mixed with the intake charge so they are not good. Some cans as the ones pictured above vent through the filter to the atmosphere, the oil in the residue will mostly condense and fall to the bottom of the can (many of the better filters have a wire type brillow pad inside to give the oily gases more surface to condense on). Other cans have a line in and a line out so you plum it inline of the stock breather hose (a must for emmisions tested cars and for most Turbo cars as under boost, the gases & intake charged may escape from the filter unless plumbed with a one way valve, depending on application). So the inline ones do let some of the oily gases back to the intake but catch much of the oil which also keeps the intake track from building up oil in it (filter housing, manifold, intake ports, turbo & intercoolers).
|