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camp chef 24-inch gas smoke vault NG conversion

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    camp chef 24-inch gas smoke vault NG conversion


    Based on a good review on this site, and the assertion that the propane burner as it is delivered can be converted to natural gas, I bought and did the conversion using the instructions on the Camp Chef site. It did not work out well. After drilling out the orifice to the specified number drill, I found the flame way too lean - it was windy sounding and tended to blow out. Attempts to move the venturi air shutter to decrease air flow was stymied by the shutter being pinned in place for propane. A bit of Dremel surgery was required to release the air shutter so i could close it. Even closed all the way, the flame is noisy at high, but no longer blows out, It admittedly is quieter than it was. Customer support, although answering promptly and trying to be helpful has never answered a key question - what larger size number drill can i use to open up the orifice by a few thousandths more to better balance gas and air. OW, it's a nice smoker. The design of the burner allows replacement should the burner burn out (I tossed my Masterbuilt smoker because replacement of the burner meant replacing the entire bottom half of the smoker, at a cost nearly as high as i paid for the smoker new). The water tray is very generously sized, the smoke-wood tray is very heavy gauge. and there is a removable bottom tray to catch grease. Overall, I like the Smoke Vault, but it would be nice if the tech guys at Camp Chef had actually tested their conversion.
    Last edited by btberlin; May 14, 2021, 03:00 PM.

    #2
    Sounds like too much hassle.
    I would rather be a happy griller.

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      #3
      I did this on a Jenn-Air some years ago. The attached pic is part of an Excel sheet I found which describes various orifice sizes needed to achieve a BTU rating. The top row is NG line pressure. I highlighted the sizes I used for the 3 burners on my grill (main, rear (rotisserie) and side burner). If you need more BTUs, the table continues. Sorry for the eye chart, PM me your email and I'll fwd the spreadsheet to you. I couldn't see how to attach it here.

      Before you re-drill anything, consider that you may need to add a regulator to the NG line before the grill. I ran it at 7psi.

      Those are some tiny drill bits needed. I got mine from drill bit city and was glad I ordered two sets, because I broke one bit.

      Attached Files

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        #4
        If the orifice is made from brass you could drill it out to larger size and if that did not work you could solder it up and re-drill again?

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          #5
          Wow...what a PITA, sorry you are going through this.

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