Well, I try to clearify how it should work.
The piston rings can't prevent that a bit of the gases in the burning chamber 'blow by' the walls of the cilinders down to the crankcase.
The PVC (positive crankcase ventilation) system is ment to suck those gases from the crankcase into the inlet manifold to get them into the cilinders again and 'out' via the exhaust.
There for there goes a rubber tube from the 'oil restrainer' on the back of the engine to the foot of the carburettor where you find a little copper tube where that rubber hose hat to be connected to. In the picture we see that taht tube ends this moment in a little (K&N) filter.
People who race Mini's use such filters on this tube to get rid of the crankcase fumes rather than bringing it back into the burning chambers. They want to get in as much fresh mixture as possible to gain the last particles of power that can be got. Don't they. What the hack; pollution!
Some cars have a oil restainer on the lid of the clutch as well.
The PCV 'valve' where you are talking about, you will find one on sverela cars that don't have a copper tube on the foot of the carburettor. In stead you find the 'valve' on the inlet manifold. Each time the excellerator pedal is not pressed down, the vacuum in the inlet manifold rises to the top that can be reached and the crankcase is sucked empty of (half)burned gases and fresh air is sucked in via the ventilated cap on top of the valve rocker cap.
You don't have such a PCV valve on a Mini (as far as I know).
I see a black rubber tube coming from doen where normally the dipstick sits in the engine carter. Don't understand where it comes from and where it goes.
Is this something a 'speciality' some one 'found out' to augment the power the engine in this car is meant to produce?
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