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Old 04-19-2018, 06:11 PM   #85
jrvariel48
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Join Date: Jan 2012
Location: New Jersey
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Default Re: Opinion on PCV valve for flathead?

Quote:
Originally Posted by scooder View Post
Try plumbing in a air/fuel ratio gauge and see what happens when you add a pcv.
Pcv's are a vacuum leak however you look at them, modern stuff's computer's deal with it fine, it's a bit of a job trying to get a carburettor to deal with it.
Obviously the oily air gets burnt in the combustion process, but it still lowers the resistance to detination (sp?) as does the vacuum leak. This ain't really a concern on a naturally aspirated engine, but bring a supercharger to the party and the needs change. The importance of clean air and good gas goes up massively.
All that being said, with a supercharged engine why make it more prone to detination? A step in the wrong direction I feel.
You can imagine what you want.
Martin.
Scooder, I have a wide band air/fuel gauge so I can certainly see if there is a difference if and when I install the pcv. Thanks for your info!
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