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Old 09-17-2020, 11:07 AM   #15
Jim Brierley
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Join Date: Jun 2010
Location: Temecula, CA
Posts: 3,450
Default Re: PCV valve good idea?

A lot of replies, not many to the question you asked. My answer ... no disadvantage. I do similar to what Bob does, also with good results. A vacuum in the crankcase can also increase horsepower, that's why racers use a pump to draw a vacuum, dyno proven. Any effect of the fumes diminishing power is negligible.
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