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  1. #11

    Default

    is there anyspecial place to get mild steelelbows? or would they sell the where the sell black pipe?

  2. #12
    Join Date
    Feb 2007
    Location
    now in Orlando!!!!
    Posts
    559

    Default

    Those fittings are forged steel, it seems a major supplier would have access, we use them at work, but I don't know where we get them, Try King Archetectual Metals, Dallas, Baltimore, LA...they ship
    More Spark Today Please

  3. #13
    Join Date
    Feb 2007
    Location
    now in Orlando!!!!
    Posts
    559

    Default

    More Spark Today Please

  4. #14

    Default

    thanks for the help guys, I gave it a try and it seemed to weld fine, now I'm going to get some end caps and pressure test it tommorow. How can you tell if it's cast iron or forged steel?

  5. #15
    Join Date
    Mar 2007
    Location
    Deltaville, VA
    Posts
    2,239

    Default

    Hit Em,

    Sounds as if what you're doing is what we refer to as a keel cooling system. If you're planning to operate this vessel in salt water, you may as well forget about using the pipe you're talking about. It won't last a season in salt water.

    A much better option (one we've used for years) is to use copper pipe and solder the 90 angles in. The size of the engine will determine the length and number of runs.

    The copper will last longer in salt water and is also a better conductor of the heat you're trying to displace.

    If you gave me some more info concerning HP, gas or diesel, and where you'll be operating, I'll give you a wag at how many linear feet of tubing will be required.

  6. #16

    Default

    the boat is only used in freshwater, but the engines are chevy 350's older ones, as for hp I have no idea, I had thought about using copper but they will be along the bottom of the boat and the guy had said that he runs it in shallow water and runs into objects the odd time so that made me change my mind with the copper. theres half of the old set still there I was going to use the parts that were there to give me an idea of how long and how many, but if you could give me a number that would be greatly appriciated.
    Thanks
    Jay

  7. #17
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,892

    Cool

    Don't weld the hardware store version fittings as they are junk steel. You want socket weld fittings from a place like http://www.mcmaster.com/ and they can be welded to your black pipe...Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
    http://www.millerwelds.com/resources...php?albumid=48

  8. #18

    Default

    how would I be able to tell the difference between the good and the junk?

  9. #19
    Join Date
    Mar 2007
    Posts
    356

    Default

    Quote Originally Posted by hit_em View Post
    thanks for the help guys, I gave it a try and it seemed to weld fine, now I'm going to get some end caps and pressure test it tommorow. How can you tell if it's cast iron or forged steel?
    when you grind cast iron it gives off red sparks vs bright yellowish sparks that carbon steel gives off, or try to cut it with a torch, you can only cut carbon steel with a torch

  10. #20
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,892

    Cool

    The forged ones will be smooth, the cast hardware ones look like junk to start with and will bubble up when hit with the mig...Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
    http://www.millerwelds.com/resources...php?albumid=48

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