1471 on gas
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1471 on gas

  1. #1
    Senior Member g935's Avatar
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    Default 1471 on gas

    My current set up is a blown gas 540 cid in a Kurtis flat. I made a switch from an 871 to a 1471. I bought the 1471 used from a guy that ran injection on it. He didn't tell me at the time that the top inlet on the blower case had been milled an extra two inches toward the front of the blower. I was going to run my dominators on it but when I put the carb spacer on top, there was a two inch gap. Here's my problem. I have to have a spacer made to compensate for the extra milling. OK, I'm fine with that but, I was also told that I would need to feed the front part of the rotors with fuel or it will burn up. It would require two extra fuel lines plumbed into the case. Is this true? I don't know how this could be done with a carb setup. Do I have to go to an injector to make this blower safe to run on gas? My primary usage is river and lake use. It would get a fair amount of running time.

    Geoff

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    adjones419 Wet-n-Wild's Avatar
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    I don't know much about blowers and gas, but on a blown-injected alcohol setup the fuel keeps the blower cool. My 8-71 high helix retro has provisions to plumb extra fuel into the blower.
    Adam
    Hallett 210

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    DJD
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    I run a 1471 high helix delta port with a hat on alky on my ride but i plumbed the back 2 lines from the hat rite into the 1\8" pipe fittings in the back of the blower. I would think that to run a 14 with carbs you would need to make sure that the blower is set up lose enough that when it gets haot and starts eating the rotors and case up.

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    steelcomp was here
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    Quote Originally Posted by g935 View Post
    My current set up is a blown gas 540 cid in a Kurtis flat. I made a switch from an 871 to a 1471. I bought the 1471 used from a guy that ran injection on it. He didn't tell me at the time that the top inlet on the blower case had been milled an extra two inches toward the front of the blower. I was going to run my dominators on it but when I put the carb spacer on top, there was a two inch gap. Here's my problem. I have to have a spacer made to compensate for the extra milling. OK, I'm fine with that but, I was also told that I would need to feed the front part of the rotors with fuel or it will burn up. It would require two extra fuel lines plumbed into the case. Is this true? I don't know how this could be done with a carb setup. Do I have to go to an injector to make this blower safe to run on gas? My primary usage is river and lake use. It would get a fair amount of running time.

    Geoff
    Sounds like a tuning nightmare to run fuel into the blower along with carbs. maybe you can spread the carbs out to help distribute the fuel through the blower better? The carbs aren't going to run any less/ more fuel than a hat through the blower (unless you have port injection with the hat setup) so if the carbs can distribute the fuel as well as a hat, there shouldn't be any problem.
    I don't have a ton of blower experience, but Just my 02.
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

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    Senior Member g935's Avatar
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    I've decided not to chance it. I'm switching to alcohol. Thanks for the replies.
    Geoff

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    River Rat sangervdrive's Avatar
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    Quote Originally Posted by steelcomp View Post
    Sounds like a tuning nightmare to run fuel into the blower along with carbs. maybe you can spread the carbs out to help distribute the fuel through the blower better? The carbs aren't going to run any less/ more fuel than a hat through the blower (unless you have port injection with the hat setup) so if the carbs can distribute the fuel as well as a hat, there shouldn't be any problem.
    I don't have a ton of blower experience, but Just my 02.
    Thats the same thing I was thinking, but on the other hand don't you use twice as much Alky as Gas on the same motor?? I think I heard that once, might have something to with this mystery.
    K and D Racing

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    adjones419 Wet-n-Wild's Avatar
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    Quote Originally Posted by g935 View Post
    I've decided not to chance it. I'm switching to alcohol. Thanks for the replies.
    Geoff
    Smart move, unless you're going to run that alcohol through carburetors and then the blower. I assume you're going mechanical fuel injection?
    Adam
    Hallett 210

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    Senior Member g935's Avatar
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    Switching to a hat and all of the goodies that go with it. Just sold the carbs.
    Geoff

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    DJD
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    Quote Originally Posted by steelcomp View Post
    Sounds like a tuning nightmare to run fuel into the blower along with carbs. maybe you can spread the carbs out to help distribute the fuel through the blower better? The carbs aren't going to run any less/ more fuel than a hat through the blower (unless you have port injection with the hat setup) so if the carbs can distribute the fuel as well as a hat, there shouldn't be any problem.
    I don't have a ton of blower experience, but Just my 02.
    Scott you didnt just say that a set of carbs will feed the same amount of fuel as a hat setup will did you? I allways thought you were smarter than that.....You will never be able to set a carb far enough back to feed the back of the blower to keep it cool so it will need to be clearanced to do it.

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    DJD
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    Welcome to the world of Alky now enjoy.

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    Member 6TH STREET STEP CHILD's Avatar
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    Word is danny put a blown alky motor in his motorhome...DJD=BLOWN ALKY DEALER
    -FIX IT FASTER-

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    DJD
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    Quote Originally Posted by 6TH STREET STEP CHILD View Post
    Word is danny put a blown alky motor in his motorhome...DJD=BLOWN ALKY DEALER
    You know me if i could do it i would. Everyone i build a motor for i try and talk them into alky instead of stupid gas.

  15. #13
    Senior Member kurtis500's Avatar
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    Quote Originally Posted by g935 View Post
    Switching to a hat and all of the goodies that go with it. Just sold the carbs.
    Geoff
    Smart move..

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    Hydro Pilot amatosanger's Avatar
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    Quote Originally Posted by DJD View Post
    You know me if i could do it i would. Everyone i build a motor for i try and talk them into alky instead of stupid gas.
    What, no single carb turbo on pump gas?
    SANGER BOATS

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