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  1. #1
    YudLuz2's Avatar
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    My MudBug 2008 that I almost gave up on.

    It started a week before the Bug, I couldn't get the Big
    Bore stroker to run. Low on rpms, and a rich bog on bottom.
    So I pulled the motor and went with a 1390 triple motor.
    Boat still was lacking in speed, one day before I was going to
    leave I broke a power valve off in the motor. Pics enclosed, this
    was do to improper clearence set by Millennium.
    Worked till 4:30am putting junk yard motor together. I also
    had three other boats to finish. Caught 4 hours of sleep and
    finished the skis, then left for the Bug, arriving after midnight.
    Boat ran bad Friday, but I was still going to run it.
    Saturday I was able to make a 1/2 pass on two runs before she
    seized up the rear cylinder. Tried one other run but 87 mph was
    all she could do. It just wasn't my week, I got enough time
    today to pull the rear cylinder off, found the problem was the new
    factory pipe with less than 2 hours on it cracked to peices
    at the stinger. The picture shows water shooting out the stinger,
    it should be completely dry with no water coming out. This was just
    putting a water hose against the inlet water fitting, not even adding
    any pressure. I'm amazed the ski even ran, now I know why my first
    motor was acting weird. Factory is sending out another pipe, but I
    just don't know, maybe I should just run single pipe , Jeff's boat runs
    83 - 84 mph with a basic 1390cc with Novi's , sounds like a good combo.
    Well I'm glad I didn't give up, 1st in single pipe class, 2nd and 3rd in
    the triple class. A lot of others had problems too, but I just wanted to
    say for the people that sometimes are ready to give up, take a deep
    breath and catch your second wind, its all we can do sometimes
    and hope for the best. Ben


  2. #2
    YudLuz2's Avatar
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    pic of pipe
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  3. #3
    YudLuz2's Avatar
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    piston
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  4. #4

    cracked pipe

    I didnt even get to do one radar run bacause my back pipe also cracked and filled the engine with water. I still had fun it being my first time at Mudbug but anything can and will happen.

    I have heard several opinions on why the back pipe cracks. Im not sure what is happening to them. Mine was closer to the exhaust flange. I would love to hear your opinion....

  5. #5
    Happily Self-Employed WFO's Avatar
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    Houston, Texas
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    Good advise Ben... I was having the same kinda troubles myself. Ran out of time to get my own boat together because of some last minute problems on customers boats.
    We still got 2nd (TheDome) and 3rd (Duke) in carb, and Icedog's 1300 EFI got beat out of trophy running by .3 mph by a 1390.

  6. #6
    The most interesting man in the world. Nils888's Avatar
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    Quote Originally Posted by YudLuz2 View Post
    It started a week before the Bug, I couldn't get the Big
    Bore stroker to run. Low on rpms, and a rich bog on bottom.
    So I pulled the motor and went with a 1390 triple motor.
    Boat still was lacking in speed, one day before I was going to
    leave I broke a power valve off in the motor. Pics enclosed, this
    was do to improper clearence set by Millennium.
    Worked till 4:30am putting junk yard motor together. I also
    had three other boats to finish. Caught 4 hours of sleep and
    finished the skis, then left for the Bug, arriving after midnight.
    Boat ran bad Friday, but I was still going to run it.
    Saturday I was able to make a 1/2 pass on two runs before she
    seized up the rear cylinder. Tried one other run but 87 mph was
    all she could do. It just wasn't my week, I got enough time
    today to pull the rear cylinder off, found the problem was the new
    factory pipe with less than 2 hours on it cracked to peices
    at the stinger. The picture shows water shooting out the stinger,
    it should be completely dry with no water coming out. This was just
    putting a water hose against the inlet water fitting, not even adding
    any pressure. I'm amazed the ski even ran, now I know why my first
    motor was acting weird. Factory is sending out another pipe, but I
    just don't know, maybe I should just run single pipe , Jeff's boat runs
    83 - 84 mph with a basic 1390cc with Novi's , sounds like a good combo.
    Well I'm glad I didn't give up, 1st in single pipe class, 2nd and 3rd in
    the triple class. A lot of others had problems too, but I just wanted to
    say for the people that sometimes are ready to give up, take a deep
    breath and catch your second wind, its all we can do sometimes
    and hope for the best. Ben
    Hats off to ya ben!!!!

    You showed up a ran!!!!!

  7. #7
    Moderator RX951's Avatar
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    You have good perseverence Ben !! Tenacity. True words, don't let nothing mechanical get you down, because it can be fixed.

  8. #8
    Site Admin Green Hulk's Avatar
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  9. #9
    JD 1's Avatar
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    Aug 2005
    Location
    St. Louis, MO
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    Hang in there Ben I know what you mean about going single pipe

    Im dropping the turbo and focusing on more simple setups.

    my turbo 87?mph with lots of time and money
    my wifes 84?mph with little to no time and not alot of money

    go figure.

  10. #10
    These single pipe 1390s have proven to be very reliable if they are clearanced properly when built. Ive beat on mine for over a year now, zero issues, and we ride almost every weekend here in the tampa salt..
    Its no fun if they break every other outing, kinda like a hi maintenance female, lotsa fun for a small amount of time, and nothing but frustration the rest of the time..

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