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1G Pcv Check valve mod

Posted by o0GuitarKid0o, May 22, 2019

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  1. o0GuitarKid0o

    o0GuitarKid0o Proven Member

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    Winnipeg ,MB, MB, Canada
    Well after doing 2 boost leak tests my brand new fram check valve was leaking no matter what I did
    I own literally 5+ pcv valves for dsms




    20190522_125213.jpg so I came up with this due to not being able to find this guy at all locally (pic 2)! And the price was way to high.(the ones at Canadian tire were smaller than the vacume lines on the throttle body and had two differnt sizes on each end) those were 8$. No thanks. Screenshot_20190521-175439_Chrome.jpg That Price tho ^^^

    so after opening literally 20 fram pcv valves in the store I came up with fram # FV163 for 6$
    Also Gave it some black paint so it's not as noticable under the hood. 20190522_131239.jpg I ended up removing the worm clamp and press fit it together using a larger ID vacume line from the intake (super tight fit) and tested it with an air compressor . I WILL BE ADDING A SMALLER CLAMP TO MAKE SURE IT DOESNT LEAK.

    The end result was this 20190522_132536.jpg and when you stand farther away you dont even notice it! 20190522_132551.jpg

    I used two small clamps to hold on the lower line as I do not need or want a boost leak there.

    All and all if you cant find those 3/8th check valves like me this fram valve should be easily available. And for 6$ you cant go wrong.

    Parts used:
    Stock pcv valve
    FRAM valve FV163
    Stock pcv line to intake cutting required
    Stock line that fits the egr valve (bigger and has good thickness and perfect fit and wont collapse under vaccume due to inner pcv line)
    Clamps
    Paint

    It literally costed me only 6$ as I had everything lying around in my trunk to do it

    Might make it a tech article after testing it for a week and doing a boost leak test on the weekend.
     

    Street Build 612  7

    1991 Plymouth Laser RS Turbo
    fwd · automatic · 1G DSM
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    ThunderChild likes this.
  2. curt-s

    curt-s Proven Member

    762
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    Joined Dec 21, 2008
    Winterville, MB, Canada
    Definitely post how much positive pressure it can hold, especially in frequent boost/vacuum cycles, before the valve comes apart. It is meant for NA vehicles so its sealing ability is limited; the valve is usually always open, just the amount of openness depends on level of vacuum in idle vs cruise/wot.
    Definitely dont want a valve coming apart and being sucked inside the manifold.

    If it works well and is reliable (fram? uh oh LOL) then those that cant get that Kynar check valve might have an alternative.

    Though the Kynar one has a Viton valve too.. and we all love Viton.
     

    Street Build 2K  1

    1991 Eagle Talon TSi
    fwd · manual · 1G DSM
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  3. o0GuitarKid0o

    o0GuitarKid0o Proven Member

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    Winnipeg ,MB, MB, Canada
    Will do! I'm hoping it's some what durable LOL I got so p##sed off when I did both my boost leak tests that I read about those little valves and could not find one the correct size LOL so I went on a mission LOL

    My laser is my daily driver rn so it will have a few heat cycles on it when I do my boost leak test this weekend and if it doesnt work or it does work i'll report back regardless of results .

    I have an extra brake booster line with the check valve I wonder..... LOL

    Gotta love Fram tho LOL all the ones I tested wouldn't hold anything past like 3-5 psi LOL
     

    Street Build 612  7

    1991 Plymouth Laser RS Turbo
    fwd · automatic · 1G DSM
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  4. Boomdeeze

    Boomdeeze Proven Member

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    Independence, Minnesota

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    1997 Mitsubishi Eclipse GSX
    10.793 @ 128.98 · 2G DSM
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  5. ThunderChild

    ThunderChild Supporting VIP

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    Rathdrum, Idaho
    Nice job on the setup @o0GuitarKid0o !

    I did some cheapo plastic check valves first that died almost instantly, then I was going to go with the kynar ones, but found some metal rebuildable ones for a really good deal. Plus they were a bit bigger ID that worked for my catch can setup better.
     

    Street Build 249  3

    1990 Plymouth Laser N/T
    fwd · manual · 1G DSM

    351  8

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  6. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    Independence, Kansas
    I use those same valves in my PCV line and the Brake Booster line! I have 3 or 4 left I think but have never had to replace them yet. :thumb:
     

    Street Build 3K  27

    1992 Eagle Talon TSi AWD
    awd · automatic · 1G DSM

    534  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    449  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 648  4

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 5K  11  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
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  7. Red_EcliPzE_GsX

    Red_EcliPzE_GsX Proven Member

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    Irving, Texas
    good setup, also niiice valve cover! Those star mitsu's are rare!
     

    373  3

    1990 Mitsubishi Eclipse GSX
    manual · 1G DSM
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  8. ThunderChild

    ThunderChild Supporting VIP

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    Rathdrum, Idaho
    Not to go off topic, but really? I have 3 of the star mitsus, one is cracked, also have a mint Hyundai one and another on my red 92 (is hairline cracked :().

    I'll have to order some of the kynar check valves, I'd like to test them and check construction quality. After my last check valves popped (we'll below rated pressure, I might add...) I wanted something substantial, so I got these.
    IMG_20190110_164421.jpg
     

    Street Build 249  3

    1990 Plymouth Laser N/T
    fwd · manual · 1G DSM

    351  8

    1987 Toyota Pickup/Hilux
    awd · manual · Misc Vehicles

    Street Build 891  7

    1997 Mitsubishi Eclipse Spyder GST
    fwd · manual · 2G DSM

    Street Build 1K  1

    1992 Eagle Talon TSi AWD
    manual · 1G DSM

    Street Build 2K  10

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
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    tk106 and 1990TSIAWDTALON like this.
  9. SouthIndy_Talon

    SouthIndy_Talon Proven Member

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    @ThunderChild .... care to share where you found those or part numbers?
     

    Street Build 774  1

    1990 Eagle Talon TSi
    fwd · manual · 1G DSM
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  10. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

    4,574
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    Joined Nov 14, 2013
    Independence, Kansas

    Street Build 3K  27

    1992 Eagle Talon TSi AWD
    awd · automatic · 1G DSM

    534  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    449  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 648  4

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 5K  11  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
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  11. tk106

    tk106 Supporting Member

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  12. o0GuitarKid0o

    o0GuitarKid0o Proven Member

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    Yeah i was in a pinch I'll order some eventually LOL trying not to use my credit card Haha,
    Although if it works then right on LOL .

    I like those metal ones though is there a part number for those or are they only available threw the interweb ? Working this weekend on a new house but should he able to squeeze in a boost leak test after work on Sunday LOL
     

    Street Build 612  7

    1991 Plymouth Laser RS Turbo
    fwd · automatic · 1G DSM
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  13. ThunderChild

    ThunderChild Supporting VIP

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    Those certainly look the same, intried to find them on eBay/Amazon originally but couldn't find them, guess they made on there finally! Here's where I got mine from, no part #, but awesome site name.

    Screenshot_20190523-152324.png

    I'm sure the eBay ones are the exact same thing. They have a slightly higher crack pressure than I hoped, but have been working well on my car. My pcv can has less oil now, and my fresh air can has about the same as before the check valve. I'm also not getting random little puffs of blue smoke on hard Accel and after idling for long times.
     

    Street Build 249  3

    1990 Plymouth Laser N/T
    fwd · manual · 1G DSM

    351  8

    1987 Toyota Pickup/Hilux
    awd · manual · Misc Vehicles

    Street Build 891  7

    1997 Mitsubishi Eclipse Spyder GST
    fwd · manual · 2G DSM

    Street Build 1K  1

    1992 Eagle Talon TSi AWD
    manual · 1G DSM

    Street Build 2K  10

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
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  14. o0GuitarKid0o

    o0GuitarKid0o Proven Member

    756
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    Joined Dec 12, 2013
    Winnipeg ,MB, MB, Canada
    Thanks ! I actually got a killer deal for it LOL it came off a snapped timing belt evo 3 4g63t, I bought a bumper of buddy and a few weeks later I put my pcv valve in to tight and cracked it and bought the Mitsubishi one for 30$ locally and polished it up when I put my car back to stock (had a n/a motor in a turbo chassis ) now shes all stock with a few minor upgrades
     

    Street Build 612  7

    1991 Plymouth Laser RS Turbo
    fwd · automatic · 1G DSM
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  15. Dreams Realized

    Dreams Realized Proven Member

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    Joined Jul 23, 2018
    Seattle, Washington
    I wish you luck with your PCV check valve ventures. I will be back in town in a few weeks if you want to PM me.

    I ordered 3 extra Kynar check valves to justify the horrendous shipping cost of a tiny envelope weighing no more than 1 oz. I can ship one or two to you for much less than U.S plastics will :)
     

    Street Build 696  5

    1997 Eagle Talon TSi AWD
    awd · manual · 2G DSM
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