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Thread: Exhaust Plugs - 1/4 in hex drive

  1. #1

    Default Exhaust Plugs - 1/4 in hex drive

    I have a 345 that has six of the exhaust plugs missing. I just rebuilt the motor but I can't locate the plugs. Anyone have some laying around their garage or barn? They are 1/4in Hex driven, over 1/2 " long, tapered below the threads and flat on the bottom. I tried Napa but they couldn't help me! Even brought one in for them to look at. I have two other 345 blocks but neither of them have the same exhust plug design...

    Any tips / tricks from you hardcores! Thanks in advanced.

    Scott
    '69 1200 pickup, 2wd camper special, want's to come to life one more time!

  2. #2
    Join Date
    Jun 2009
    Location
    Hurlburt Field, FL
    Posts
    495

    Default

    Try Super Scouts and talk with Bob... he's the parts guru there that really knows his stuff.

  3. #3
    Join Date
    Jun 2009
    Location
    Maryland
    Posts
    145

    Default plugs

    I got a full set of pipe plugs for my engine in my Clevite engine core plug kit from Napa if this is what you are talking about? Or do you mean plugs for the air injection? If so you can visit this thread on BP:
    http://www.binderplanet.com/forums/s...ad.php?t=14540

    or this one:
    http://www.binderplanet.com/forums/s...ging+air+tubes

  4. #4
    Join Date
    Jun 2009
    Location
    Maryland
    Posts
    145

    Default plugs

    If you mean the various core plugs they came in a set of Clevite engine core plugs from Napa.

    If you mean the air injection tube plugs, see this thread:

    http://www.binderplanet.com/forums/s...ging+air+tubes

    or this one:

    http://www.binderplanet.com/forums/s...ad.php?t=14540

  5. #5
    Join Date
    Jun 2009
    Location
    Maryland
    Posts
    145

    Default plugs

    I have twice tried to post links to pertinent threads on other boards but apparently the spam filter on this site will not allow you to say " Binder P*****t" so just go over there and do a search for air tube plugging.

  6. #6
    Join Date
    Aug 2009
    Posts
    1

    Default

    That sounds a lot like the plugs I used on my 304. They were plugs for flare fittings and not the normal NPT plugs that you can find everywhere. I ended up going to a plumbing supply store.

  7. #7
    Join Date
    Jun 2009
    Location
    Maryland
    Posts
    145

    Default plugs

    No they are not pipe plugs. They are a special kind of plug that extends into the full cavity left by removing the tube. If you put in pipe plugs you will experience harmonic whistling kind of like a calliope. It has driven folks crazy trying to find out where their "leak" is.

  8. #8

    Default

    Use set screws....what we use.

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