Category : Exhaust
5 years ago 0
Posted in: Exhaust, Type 4

The first type 4 engines used oval, copper gaskets where the heater box/header pipe mates with the cylinder head, commonly known as round port exhaust. This was changed in 1978 to what’s called square port exhaust. The round port gasket looks like this … And square port gaskets look like this …   The common belief is that the square port variety is better than the round port because  lot of round port vehicles have exhaust sealing problems at the […]

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