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Thread: PCV valve under boost

  1. #1
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    PCV valve under boost

    Is there a bolt-in PCV valve for boosted applications for the 4.6L? I checked mine with compressed air and it indicates it will leak manifold pressure into the crankcase.

    Edit: I guess this opens up the hole catch-can question also, but it would seem the one-way check valve requirement remains.
    Lifespeed

    2004 Silver Birch Marauder 130K miles
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    Coming soon: Livernois 5.0L stroker, ADTR/Vortech V2 intercooled SC, Silverfox trans and Circle D converter

  2. #2
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    EV111 with a grommet from the HELP section at FLAPS.


    Sent from my iPhone using Tapatalk
    SOLD 12/31/2021

    Cobra short block / ProCharger F1-A / Cog drive upgrade / Manley valves / Brian Tooley Racing valve springs / 80# inj. / -8 fuel line / -6 return / Aeromotive 340 pumps and regulator / 2012 GT500 TR6060 six speed / twin disc clutch / Driveshaft Shop GT500 upgraded CV joint shaft / BA5000 blow thru MAF/ 4.10's / Ford Racing 31 spline set up and Girdle / Metco D.S. safety loop / Stainless Works headers, cats, and everything else out back / ClassGlass hood / Bob's hood strut mod / Hurst line lock / Metco control arms / Addco front and rear sway bars / Monroe severe duty shocks all around / Race concepts rotors / Badgeless grille / 35% tint / FBM's interior LED kit and ambient lighting kit / Pioneer FB700 deck / kenwood speaker 4 Ch. / Rockford Fosgate 10" sub and amp / Kicker 6 X 8's all around / back up cam / bluetooth / Pioneer Xm / 704 RWHP 603 RWTQ tuned by Mo's Speedshop.

  3. #3
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    ^^^What he said^^^
    2004 Black Marauder: #2237 Born on 4/1/2004

    Eaton Swapped and a bunch of other goodies!

  4. #4
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    ^^^^What they said^^^^
    No Marauder

  5. #5
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    Thanks! ^^^
    Lifespeed

    2004 Silver Birch Marauder 130K miles
    Wilwood Aero6 F, NMDP R brakes, Penske 7500DA shocks, Hypercoil 600lbs F and Grand Marquis R air springs, Addco tubular sway bars, Metco control & Watts, 31 sp axles, Stainless Works cat-back exhaust, Lidio tune, American Racing AR883 9.3" 50mm F 10" 59mm R 20" wheels, Pirelli P-Zero 265/35-20, 275/40-20 tires

    Coming soon: Livernois 5.0L stroker, ADTR/Vortech V2 intercooled SC, Silverfox trans and Circle D converter

  6. #6
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    Would the EV111 be of any use on a Trilogy car? I would have thought if it was necessary it would have been included or at least recommended in the destructions...
    The Blackbird
    Trilogy #61
    Driveway Queen

    The Spruce Goose
    2004 Grand Marquis LS Limited Edition
    Daily Driver

  7. #7
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    Here is an interesting article clarifying how a boosted crankcase ventilation system should work. It looks like a second catch can is needed to clean the greeblies from what is normally the breather path to the air intake on a NA car. On a NA car the flow is into the crankcase only, on a boosted car when the PCV valve closes under boost this path evacuates the crankcase lightly. Don't see where makeup air refills the crankcase, but given the very light vacuum behind the air cleaner this may not be important.
    Lifespeed

    2004 Silver Birch Marauder 130K miles
    Wilwood Aero6 F, NMDP R brakes, Penske 7500DA shocks, Hypercoil 600lbs F and Grand Marquis R air springs, Addco tubular sway bars, Metco control & Watts, 31 sp axles, Stainless Works cat-back exhaust, Lidio tune, American Racing AR883 9.3" 50mm F 10" 59mm R 20" wheels, Pirelli P-Zero 265/35-20, 275/40-20 tires

    Coming soon: Livernois 5.0L stroker, ADTR/Vortech V2 intercooled SC, Silverfox trans and Circle D converter

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