I'll work on getting an inside pic. It's empty on the bottom, but has the filtration part on top.


It keeps oil vapor (which kills octane and coats the intake) from entering the engine. Here's what my can captured at my last oil change:

 

Temperature is involved. It is best to mount the can in the coolest place possible. The HOT vapors, which includes oil AND water tid bits, will cool and consequently condense inside the can. Thus resulting in the pool of oil in the can.

A lot of companies make them to mount right off the engine using some OEM bolt...the UPR one included.

 

If you dont have a super charger then you probably dont need one. A SC sucks more vapors. i had a mess in my inter-cooler & piping until i installed one.

No it isnt, not to any practical degree, the vapors move thru to quickly & there isnt enough cooling surface to condense water vapor. They would have cooling fins and be MUCH larger if that was true. I have built oil separators for a manufacture of large refrigeration systems. I know the theory and application behind them. If you are getting water in your can then either you have a BIG problem or are running E85 tune. You dont see any water in the oil in the pic above do you?

 

There are PLNTY of people running a catch can on a non SC system. Everyone can benefit from it.

 

I can show you plenty of oil in my catch can from my N/A engine

 

Sharad, any luck with those pics?

 

This is not the same part number as you're looking at, but this shows what the can looks like inside:

http://www.uprproducts.com/mustang-b...erator-79.html

 

UPR billet aluminum catch can kit


View of the can in its 3 parts
There are double o-rings at each connection point

 

Drop some stainless steel or copper wool and it will work twice as good.

 

I would advise against modifying it. It works very well as is.