local propane company said they would convert my scag for free

Discussion in 'Alternative Fuel Forum' started by clyde, Oct 1, 2012.

  1. clyde

    clyde LawnSite Senior Member
    Messages: 336

    anyone convert their engine ( mine is a 27hp kaw vert. liquid cooled ) to propane? What are the pro's and cons?
  2. dhardin53

    dhardin53 LawnSite Senior Member
    Messages: 710

    Their are two way to convert to propane. Only one way will work. Typically simple conversion is to deliver a propane gas vapors from the tank to the carb, this has shown NOT to work.
    What works good is to get a tank set up that will deliver liquid propane to the carb.
    This set up is a little more expensive but when just using the vapor of propane you WILL have a freezing carb problem.

    The facts are propane is 10% less BTUs than gasoline. Some say they can tell the power lose. In reality you just use about 10% more propane compared the the same as gasoline. The power is not much of a factor from what I have seen.

    On the positive side it is much cleaner running, and much cheaper that gasoline.
  3. clyde

    clyde LawnSite Senior Member
    Messages: 336

    this guy is wanting to cut the air intake and spray into line , not from carb.

    So in winter does it get worse as far as trying to crank if carb starts freezing. In know you would loose power if it freezes and if it dethaws won't you have issues as well with cranking .?
  4. Scagguy

    Scagguy LawnSite Bronze Member
    Messages: 1,522

    If these people haven't done a bunch of conversions, I wouldn't be their experimental project. We don't run propane on anything....there's some upsides to running it but there's a few downsides as well. I'll stick to gas and diesel.
  5. Duekster

    Duekster LawnSite Fanatic
    from DFW, TX
    Messages: 7,961

    I was told to work on them in Texas the Mechanic has to have a licenses from the Rail Road commission. The dealer just Pooh poo'd the whole concept of propane.
  6. cgaengineer

    cgaengineer LawnSite Fanatic
    Messages: 15,778

    Power loss, unable to fillup at a gas station...I say no, not until propane is more widespread. If you run out of fuel on customers lawn you can just add a bit of fuel to finish, you have to change the tank.
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    MOW PRO LAWN SERVICE LawnSite Bronze Member
    Messages: 1,568


  8. Ecotech

    Ecotech LawnSite Member
    Messages: 36

    Not sure if it is possible, but a conversion kit that was dual fuel would solve this issue. I know they have dual and tri-fuel adapters for generators, it would be interesting to see if one could be used.
  9. TX Easymoney

    TX Easymoney LawnSite Platinum Member
    Messages: 4,109

    Scag and i believe ferris make a gas and propane mower...very pricy.

    It sucks when you run out and have to go to get propane because you didn't have time the day before.
    Also, if on a large property and you run out, you have to lug the propane to the mower or drive truck close ...no small portable tank available....
  10. corey4671

    corey4671 LawnSite Silver Member
    Messages: 2,931

    I had the same thing about a year ago. Two local propane dealers called me wanting to convert my mowers for free. I cited the same reasons here. What happens when I run out? PLUS I had to sign a contract to buy my propane from this one dealer for the next two years....no thanks

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