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Thread: Can you identify this?

  1. #1
    Car Guy
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    Default Can you identify this?

    I feel kind of funny asking you guys this not knowing what I have here, but I was looking through my parts box and came across this part that we bought at Napa a few years ago and apparently haven't installed it yet. I showed it to my dad and he didn't remember what it was either. I tried looking the through the shop manual and couldn't come up with anything. Any way, here is a picture of it and would love to know what this is! Thanks. -Austen.


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    Default EKG valve....

    Blurry EGR.......

    I think.

    David

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    Semi-retired admin Arne's Avatar
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    Quote Originally Posted by dspillman View Post
    Blurry EGR.......

    I think.

    David
    I don't think so. I think its a PCV valve. Looks exactly like the valves on both my '71s, and also the '83 ZX motor I had too. Should be a big hose (3/4-1" diameter) leading from the breather tube on the driver's side front of the block (under the thermostat housing) going up to the intake manifold somewhere. The PCV valve screws into the manifold and the hose attaches to it.
    Arne - Former owner, HLS30-37705, 7/71, 905 Red
    Car blogs - 240Z - Porsche 911

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    2nd on the PCV valve. EFI cars it is on the underside of the intake manifold, on carbed cars it goes on the balance tube.
    things will only bother you if you let them.

    82 280zxt 4 spd auto
    73 240z--lsd, cv axles
    short throw info

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    Third on the PCV valve.
    -Bo

    1972 240z - Not original and still not done.
    "Something wicked this way comes...."

  6. #6
    Car Guy
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    Thanks for the help guys, that helps a lot. What exactly does the PCV valve do? Correct me if I'm wrong, but it has something to do with emissions?

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    positive crankcase ventilation. without it you would blow gaskets and seals.
    things will only bother you if you let them.

    82 280zxt 4 spd auto
    73 240z--lsd, cv axles
    short throw info

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    Supporting Member =Enigma='s Avatar
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    Quote Originally Posted by Darrel View Post
    positive crankcase ventilation. without it you would blow gaskets and seals.
    Or if it gets clogged. A very misunderstood and often overlooked part.

    Wait, what part were we talking about?
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    Default note to self...

    Don't try to look at football while ID'ing parts,,,\\,,

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    infected by Zirus! BuDavid's Avatar
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    Austen, this was an attachment of a reply to my thread posted by Stephen Blakeney (Sblake01)

    http://www.classiczcars.com/forums/a...0&d=1123955666

    the illustration is scanned from the owners manual of a 1975-78 280Z.

    I hope it will make things more clear .
    Mohamed.



    Women, you would prefer to be Z's if you knew how do we treat them

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    Car Guy
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    Thank you for the diagram that does help me to understand what it does. Does anybody by chance have a good picture of where it is on the engine. I seem to be over looking it some how from looking at the diagrams. Thanks again.

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    In case you have the hose in its place, you will see a hose a hose from the left side of the engine under the intake, coming from a pipe STABED into the block and going up to the bottom of the intake, you can not see it by eyes, you'll need a mirror or by touching you can find it..

    btw, if the hose is not there and openings not plugged, that will cause you a big vacume leak and getting much dirt in your engine oil.

    go open the bonnet and put your hand under the intake.. make sure that it is cold so you wont harm your hand from the heat of the exhaust.
    Mohamed.



    Women, you would prefer to be Z's if you knew how do we treat them

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    infected by Zirus! BuDavid's Avatar
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    check the attachment, there is a picture from one of the old threads, the red arrow is pointing at the hose connecting the PCV valve to the block pipe. goes to the center of the intake..
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	pcv hose.jpg 
Views:	53 
Size:	65.8 KB 
ID:	15943  
    Mohamed.



    Women, you would prefer to be Z's if you knew how do we treat them

  14. #14
    Car Guy
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    Thanks guys for the help, I got it replaced this afternoon. I assume on the end of the hose where it connects on to the valve that it was supposed to have a clamp there, it just pulled right off, so I stuck an O clamp on the end of it to keep it snug.

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