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Thread: Genesis II 325 NG - Failed conversion to Propane

  1. #1
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    Genesis II 325 NG - Failed conversion to Propane

    Got a mess on my hands. Ordered the wrong version (NG), swapped orifices to allow conversion to propane and it runs WAY too hot, flames leaping up 4-5 inches. Ordered the conversion kit on Ebay from someone with impeccable feedback. He tells me I must have fixed valves rather than continuous, and conversion will be much more complicated than just swapping orifices.

    Question I've got is, how much more complicated, and expensive? Cutting my losses at this point won't be cheap (put the NG orifices back & sell it for maybe half price) but that's on the table too.

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    TVWBB Hall of Fame Bruce's Avatar
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    Contact LMicheals
    He will set you straight.

    https://tvwbb.com/member.php?8301-LMichaels
    Some people rescue dogs and cats. I rescue Webers.

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    TVWBB Hall of Fame LMichaels's Avatar
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    When you turn the controls does the flame height change at all? BTW the person is giving you some crap there. First off every new Genesis I have looked at has continuous valves. Bottom like he drilled them wrong. If you can find the "spuds" new orifices with only a tiny pilot hole in them and send them to me along with the specs of your grill I would be happy to size them correctly for you. I would also be sure you did not buy a high pressure regulator which is used in LP heater applications or large burners like turkey fryers, etc. If so your issue is as simple as a different proper low pressure regulator. My guess is the person misunderstood you and gave NG orifices rather than LP. But, like I said if you can find the proper size blank spud or if someone here can tell me what they are I am happy to help. no charge either (unless I have to buy something LOL)

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    Yes, I get a change from way way too much, to way too much. Specifically what the guy told me was
    "Weber buys these parts from china..the vendors supply variable orifice
    valves 99 % of the time because they are cheaper to make..but on occasion
    will supply fixed orifice valves (as long as they meet the btu spec). Any
    model new or old can have this component."

    When I put the orifices in, I eyeballed and the new ones had smaller holes than the old. Maybe not small enough, I'll dig them out tomorrow.

    I don't think the regulator is a problem - [IMG][/IMG]

  5. #5
    TVWBB Hall of Fame LMichaels's Avatar
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    Check the output pressure of your regulator. If it's rated for anything other than 11" WC it's wrong one. Again whether or not you have variable orifices would not make a big difference. The only issue it would bring up is (in your application going from NG to LP) is low and medium would not be as low as you might like. I think the EBay seller bamboozled you

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    Quote Originally Posted by LMichaels View Post
    Check the output pressure of your regulator. If it's rated for anything other than 11" WC it's wrong one. Again whether or not you have variable orifices would not make a big difference. The only issue it would bring up is (in your application going from NG to LP) is low and medium would not be as low as you might like. I think the EBay seller bamboozled you
    How can I check the output pressure? I've tried searching online for info based on the numbers on it, coming up blank. Logo indicates its from GasOne which looks like a reputable company. Didn't have time today to dig out the front orifices, but I did eyeball the side/simmer burner where its accessible - its possible I've been bamboozled, but the orifices I was sent are visibly smaller than the NG one that came with the grill.

    Seller sent me an adjustable regulator as a fix, but its not a real fix. I can dial it to give appropriate flame level, but it needs to be readjusted whenever I open up or close a burner.

  7. #7
    TVWBB Hall of Fame LMichaels's Avatar
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    Those adjustable regulators are bad news. Don't use it. The regulator you have from GasOne (and BTW just because it may be the wrong regulator does not make the regulator company irreputable) just simply means you don't have the proper one. Somewhere on the regulator there should be something referring to 11" WC (Water Column) which is a unit of measure for gas. Now just because it may say 11" doesn't mean it's what you're getting. It may be faulty. I would simply run out to Home Depot and buy a different one for a gas grill there. They're pretty standardized now so as long as the hose is long enough you're good. Slap a new one on and see what happens but get that adjustable one off. They're not meant for that application

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    Swapped out the regulator, still running too hot.

    Guess the next step is calling grill-repair for correct orifices? Looks like they'll drill for me if I supply the BTU target. Should I consider the whole manifold, would that give more control for low & medium temps?


    And for the side burner, does this look roughly right to anyone with a 300 series? Figured I'd mostly use it as a simmer burner & its way too hot, but maybe that's how its supposed to be. This is on low -

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    TVWBB All-Star Dave in KC's Avatar
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    Quote Originally Posted by JoeR View Post
    but the orifices I was sent are visibly smaller than the NG one that came with the grill.
    This is CORRECT. They should be much smaller.
    Side burner is running too hot for low.
    E330 1997 Genesis 1000 Blue Performer wsm22 :wsm18: :wsm14: 1983 Red Head Chiefs NFL Edition

  10. #10
    TVWBB Hall of Fame LMichaels's Avatar
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    Yeah side burner should look similar on high not on low. Definitely getting WAY too much gas into that thing. True is you find an entire manifold with proper regulator it would be the best but you should be able to get properly sized orifices. I have posted companies I use to buy spuds. May want to find that, send them to me and I will do it for free for you

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