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Need Help on a Dumb Question

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 1986Blazer, Aug 9, 2001.

  1. 1986Blazer

    1986Blazer 1/2 ton status

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    Just for my info.....do I need to really use the breather hose (not the pcv hose) that connects to the bottom of the air cleaner? If I do not use it, what are the implications?

    Thanks

    <a target="_blank" href=http://www.geocities.com/keywestk5/KeyWestK5.html>http://www.geocities.com/keywestk5/KeyWestK5.html</a>
    So I says to him, I said, "get your own monkey."
    1986 K5, 350 GM Crate, 700R4, NP208
     
  2. newyorkin

    newyorkin 1 ton status

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    I've never personally run without it, but I've heard of other guys either springing leaks or spraying oil through it.
    Just curious, why do you want to get rid of it?

    Ratch
    <a target="_blank" href=http://k5.8m.com>k5.8m.com</a>
    **Your ad here**
     
  3. 1986Blazer

    1986Blazer 1/2 ton status

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    I kinda got stuck with set of aftermarket GM licensed valve covers. They only have one small 1.25" hole on each cover. There is not a hole for both a breather hose and oil fill. Sure I can just use the same hole for the breather and oil fill but that is a pain in the ass and it is a little hard to pour oil when the hole is toward the firewall. So.....if I can get away without using it, I will. I was just wondering what the implications were.

    <a target="_blank" href=http://www.geocities.com/keywestk5/KeyWestK5.html>http://www.geocities.com/keywestk5/KeyWestK5.html</a>
    So I says to him, I said, "get your own monkey."
    1986 K5, 350 GM Crate, 700R4, NP208
     
  4. Pugsley

    Pugsley 1/2 ton status

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    If you just use a breather cap for the oil fill, there's no need to have the hose.

    Dos mas Tecates!!!
    <a target="_blank" href=http://pugsley.alloffroad.com>pugsley.alloffroad.com</a>
     
  5. 1986Blazer

    1986Blazer 1/2 ton status

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    I guess all the breather hose does is allow oil fumes to escape and to allow built up pressures to escape - is that right??



    <a target="_blank" href=http://www.geocities.com/keywestk5/KeyWestK5.html>http://www.geocities.com/keywestk5/KeyWestK5.html</a>
    So I says to him, I said, "get your own monkey."
    1986 K5, 350 GM Crate, 700R4, NP208
     
  6. Pugsley

    Pugsley 1/2 ton status

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    That's about it - only other thing it does that I can think of is put a strain on the air cleaner.

    Dos mas Tecates!!!
    <a target="_blank" href=http://pugsley.alloffroad.com>pugsley.alloffroad.com</a>
     
  7. Triaged

    Triaged 1/2 ton status

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    The engine sucks air in through the breather tube. You can just use a breather cap and forget about it. The only reason I can see not to is If you want to keep the engine water proof. It would be easer to suck water in through the breather cap than in through the air cleaner. K&amp;N make some nice breather caps.

    '71 Blazer CST w/ a 400sbc, 4" lift, 36" Supper Swampers, and alot of rust
     
  8. Rockjunkies

    Rockjunkies 1/2 ton status

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    Why can't you unbolt one valve cover, turn it 180 degrees, so that the oil/breather hole would be in front?

    Keep it simple!
     
  9. newyorkin

    newyorkin 1 ton status

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    There's an adapter my dad got a few years ago from the state police that they used on thier Caprices and Crown vics. It's like a wide steel tube that acts as an extension for the oil fill, angled upward and forward. I think he had a both rubber cap for it or a breather cap, so it could be used in an application like yours (but he only used the rubber cap). I believe it was either a police package only part, or something the state boys put on themselves for whatever reason. If you have any friends in the police, maybe you could see where they get them.

    My goof, too, if you're using the PCV, I don't think you should puke too much oil not running the breather into the air cleaner. I think I misunderstood the original question...

    Ratch
    <a target="_blank" href=http://k5.8m.com>k5.8m.com</a>
    **Your ad here**
     
  10. Butch

    Butch 1/2 ton status

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    If you do run just a vent on the valve cover then you will have to get a really good one from like Summit for race cars. I tried the El Cheapo's and after about a month they will start to drip oil out of them on occasion.

    I thought I was wrong once,
    but I was mistaken
     
  11. DuneRunner

    DuneRunner 1/2 ton status

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    I have a set of Edelbrock covers and I took off the hose and put on a k&amp;n breather. The one I got was a little big but I haven't had any problems.

    DANGIT it's not a bronco!
     

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