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Acceleration Junkie
Join Date: Aug 2007
Location: Laguna Beach, CA
Posts: 263
Originally Posted by timc View Post
I'd sure be curious to know why? Better tensioner reliability or More pressure to other parts of the engine???
Since engine oil pressure is regulated via a spring loaded bypass valve circuit that bleeds pressure over the spring's control pressure, the smaller orifice is most probably used to lower oil pressure in the tensioner.
We can't know Porsche's reasoning for the smaller orifice without asking but since engine oil pressure is otherwise regulated, the change was probably motivated by premature failure of the tensioner's oil seals.
Old 05-09-2008, 11:54 AM
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