More powerful engines, but without proper crankcase ventilation, suffer from oil leaks in the strangest places. For example along the retaining rings, the oil plug and all possible openings and seals. Due to the much faster reciprocating movements in the crankcase, the pressure is higher than with a standard engine. In addition, with an original engine, too high crankcase pressure can occur. If this is the case, your piston rings must be replaced. Porsche was already aware of the problem of increased crankcase pressure in the 356 and 912 engines, so a ventilation system is fitted between the alternator bracket and the oil filler cap, allowing the engine to breathe better (or lose its overpressure).
This crankcase ventilation tower based on Porsche technology has been perfected and no longer looks like what is found on Porsche engines. Made of aluminum and equipped with four bleed fittings, two of which are connected to the valve covers and the other two to the air filters. For engines that are not equipped with two carburetors, use the blind plug provided to close one connection. The tower is designed so that oil filling is not an obstruction, while blocking oil splashes and relieving crankcase pressure.
The tower is mounted directly on the dynamo bracket with the oil inlet nut supplied (seal not supplied, see Options tab).
Three hose barbs are supplied, if you need four, take them extra. They are listed on the replacement parts tab.
Instructions
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