Volvo RWD 120-130 Forum

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restricted orifice manifold fitting 120-130

posted by  greezy on  Wed Jun 2 16:33 CST 2010
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last visit: Sun Sep 4 21:21 CST 2011
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Hello. Trying to replace my PCV valve with the fitting mentioned above. My engine is a B18D in a 66 amazon. I think the fitting I am after comes stock on some B20 engines. The restricted orifice fitting is mentioned in Brickboard posts as a solution to some PCV problems. Please let me know if you have this fitting, and how I may acquire it.








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    restricted orifice manifold fitting 120-130

    posted by  walrus3 on  Thu Jun 3 03:06 CST 2010
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    last visit: Mon Dec 2 14:20 CST 2013
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    You'll probably do better with the valve.
    In my experience the orifice gets plugged and the blowby fouls the air cleaner.
    I've drilled them out, first to 1/16" and then to 3/32" and still they are not very effective.
    --
    George Downs, Bartlesville, Heart of the USA!








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      restricted orifice manifold fitting 120-130

      posted by  greezy on  Thu Jun 3 04:15 CST 2010
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      last visit: Sun Sep 4 21:21 CST 2011
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      Oh. An opinion I hadn't heard before. Part of my problem is the blowby is extreme. Cylinder #1 has a couple deep scores on the wall, and sometimes the oil fouls the plug, and ....I had hopes of a more effective PCV system handling some of that. Sigh. thank you for answering.







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