Drftpretty
11-11-2006, 08:59 PM
Taken from Newtiburon.com
Its a basic catch can, works really good lol.
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Here is a how to on building an oil separator (catch can) for $30 +
You need a few things from home Depot, you will find these with the air compressor accessories. It is a water separator, and a couple fittins and some thread lock and get your hoses and clamps from Autozone, etc... and this info comes from the ElantraGT forum and my friend Greg-o...
All cars vent the blow-by gases through into the intake system. Huh, what's that mean? When combustion occurs, there is some leakage past the rings and so down into the sump. This pressurises the sump a bit, with these gases making their way up to the top of the engine. The oil/air mist is drawn off from the rocker cover and directed into the intake, where it's sucked the engine and burnt.
However, in a high performance engine, this has two associated problems. Firstly, the contamination of the combustion chamber with oil increases the probability of the engine detonating. That's because adding oil to the fuel/air intake charge doesn't do much for the fuel's effective octane level. Secondly, in turbo cars, the inner surfaces of the intake system - and most importantly, the intercooler - get coated with a thin layer of oil. This doesn't do much for the heat transfer capabilities of the intercooler.
So stopping this oil going back into the intake has some benefits, especially if the engine is breathing a lot. Directing the crankcase breather straight into the air (ie by pulling off the hose going to it) will cause the inside of your engine bay to be coated with a thin layer of oil after a while, not to mention polluting the atmosphere. And putting just a filter on the breather will soon cause the filter to become clogged with oil.
So whadda do? Build an oil/air separator, that's what! Often these take the form of welded-up alloy containers, but not many people have alloy welding facilities in their home shed. So we've put together a design that can be built using just a few hand-tools. It's also very cheap. Depending on whether you opt for polishing, powder-coating, plastic fittings, brass fittings (etc, etc) it will cost anything from $15 to maybe $50, but $30 is the avg for everything i bought.
Its a basic catch can, works really good lol.
------------------------------------------------------
Here is a how to on building an oil separator (catch can) for $30 +
You need a few things from home Depot, you will find these with the air compressor accessories. It is a water separator, and a couple fittins and some thread lock and get your hoses and clamps from Autozone, etc... and this info comes from the ElantraGT forum and my friend Greg-o...
All cars vent the blow-by gases through into the intake system. Huh, what's that mean? When combustion occurs, there is some leakage past the rings and so down into the sump. This pressurises the sump a bit, with these gases making their way up to the top of the engine. The oil/air mist is drawn off from the rocker cover and directed into the intake, where it's sucked the engine and burnt.
However, in a high performance engine, this has two associated problems. Firstly, the contamination of the combustion chamber with oil increases the probability of the engine detonating. That's because adding oil to the fuel/air intake charge doesn't do much for the fuel's effective octane level. Secondly, in turbo cars, the inner surfaces of the intake system - and most importantly, the intercooler - get coated with a thin layer of oil. This doesn't do much for the heat transfer capabilities of the intercooler.
So stopping this oil going back into the intake has some benefits, especially if the engine is breathing a lot. Directing the crankcase breather straight into the air (ie by pulling off the hose going to it) will cause the inside of your engine bay to be coated with a thin layer of oil after a while, not to mention polluting the atmosphere. And putting just a filter on the breather will soon cause the filter to become clogged with oil.
So whadda do? Build an oil/air separator, that's what! Often these take the form of welded-up alloy containers, but not many people have alloy welding facilities in their home shed. So we've put together a design that can be built using just a few hand-tools. It's also very cheap. Depending on whether you opt for polishing, powder-coating, plastic fittings, brass fittings (etc, etc) it will cost anything from $15 to maybe $50, but $30 is the avg for everything i bought.