PCV system

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==PCV valves for modified engines==
 
==PCV valves for modified engines==
Big cams with low idle vacuum throw can throw off a stock PCV valve, creating a lean idle. Normally at idle the PCV is in the low flow position. But if the PCV valve is open at idle (because of low idle manifold vacuum caused by a big cam), the idle gets lean and unstable and may suck too much oil along with too much air. This is akin to a big vacuum leak at idle because the PCV is open at idle instead of in the idle (low flow) position.  
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Big cams with low idle vacuum throw can throw off a stock PCV valve, creating a lean idle. Normally at idle the PCV is in the low flow position. But if the PCV valve is open at idle (because of low idle manifold vacuum caused by a big cam), the idle gets lean and unstable and may suck too much oil along with too much air. This is akin to a big vacuum leak at idle because the PCV is open at idle instead of in the idle (low flow) position.
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PCV on a blown motor....
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http://www.hotrodders.com/forum/correct-way-plumb-pcv-system-turbo-car-247049.html
  
 
==PCV valve specs==
 
==PCV valve specs==

Revision as of 12:03, 13 October 2013

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