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Marine Dauntless 225 Directional Spin?

Discussion in 'Flat Fender Tech' started by Tom Lewoc, Aug 24, 2020.

  1. Feb 3, 2021
    baldjosh

    baldjosh Member 2020 Sponsor

    pacific north west
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    buddy of mine has experienced this on a shovel....it didnt run though, just coughed
    not possible, someone was pulling your leg on that one
     
  2. Feb 3, 2021
    gromit

    gromit New Member

    harrisburg, pa
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    Nov 6, 2018
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    It was yrs ago. The story must of been embellished to get a laugh. Maybe with a two-stroke dirt bike? Or, didn't Harley make a two-stroke golf cart engine? Puts a damper on the tale for sure, ... doesn't have much impact with a biker patching out with a golf cart haha
    Oh well, Thanks for the feed back.
     
  3. Feb 3, 2021
    ITLKSEZ

    ITLKSEZ Volvophilic

    Post Falls, ID
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    Yes, we had a 2-stroke Harley golf cart for a while, and that actually ran backwards for reverse.

    [​IMG]

    Harley also made a 2-stroke dirt bike in ‘78. The guy I bought my old white scout off of had one stashed away in his shed. I don’t think he had any idea what it was worth.

     
    Last edited: Feb 3, 2021
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  4. Feb 3, 2021
    Rich M.

    Rich M. Shoe pusher

    Maryland
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    Friends of mine had a 2 stroke 125 Harley (AMF era) dirt bike. Ran strong! Threw me about 30' one evening in a damp cow pasture...
     
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  5. Feb 3, 2021
    47v6

    47v6 junk wrecker! 2021 Sponsor 2020 Sponsor

    USA
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    My dirt bike buddy in 1987 had a Harley 2 stroke dirt bike.. It was garbage compared to my KDX175 and his XR250.. But his dad was a cop and got it for free. We had road bikes ,KZ400, for free too. They aren't as much fun in muddy conditions.

    I broke the pull start housing on my husky chain saw a long time ago.. I can confirm that a 2 stroke engine will run just fine backwards. ... now why the heck is this chain so dull.... duurrrrrr.
     
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  6. Feb 3, 2021
    tomasinator

    tomasinator Member

    Redmond, WA
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    When I was a kid and my friends and I had Cox airplanes, it was really easy to accidentally start the .049 engine so it'd run backwards. We'd throw a cloth on the prop to stop it.
     
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  7. Feb 3, 2021
    Tyler Vaughan

    Tyler Vaughan Mr. Vaughan

    Central NE
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    that'd be an interesting way to run a gokart in reverse, put a 2 stroke in and stop the engine and start it backwards to go in reverse!

    or just find a mower transaxle...
     
  8. Feb 3, 2021
    Norcal69

    Norcal69 Out of the box thinker 2021 Sponsor 2020 Sponsor

    Northern California
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    My fingers hurt just thinking about getting smacked with one of those back in high school.
     
  9. Feb 3, 2021
    jeepdaddy2000

    jeepdaddy2000 Member

    Eagle Point oregon
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    Jun 24, 2004
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    Harley 2 strokes were made by the Italian company Aermacchi, probably why they ran backwards:D
    Backwards running engines for reverse were used golf carts, early outboards, and a few snowmobiles.
     
  10. Feb 4, 2021
    Keys5a

    Keys5a Sponsor

    Florida Keys
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    When I was a kid living in Cincinnati, once when I went to Edgewater Dragway there was an early '60s Buick (maybe 10 years old at the time) that had 8 straight stacks out of the center of the hood. Looking under the hood, it had a 4 bbl carb on either side of the engine just inside of the front tire, leading into the exhaust ports.
    I didn't fully understand it at the time, but it was a Nailhead that was built to run with the intake and exhaust reversed. I'm pretty sure it ran the normal direction, but the exhaust came out where the intake manifold was supposed to be.
    I'll never forget that thing!
    -Donny
     
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  11. Feb 5, 2021
    Fireball

    Fireball Well-Known Member 2021 Sponsor 2020 Sponsor

    Pullman, WA
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    I managed to find a picture of a Chevy done that way:
    [​IMG]

    Interestingly, a lot of the luxury makers like BMW, Porsche and Mercedes are doing the same thing on their turbo V-engines. They are putting the exhaust and turbos up in the V of the engine and the intakes down on the sides. Makes for better heat control and packaging:
    [​IMG]
     
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  12. Feb 5, 2021
    ITLKSEZ

    ITLKSEZ Volvophilic

    Post Falls, ID
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    Yup, the advent of fuel injection, and its compact packaging, has made them rethink the dynamics of flow direction. Yamaha flipped the intake to the front of the engine on their flagship dirt bikes 10 years ago. Although, 10 years in, it’s still debatable if it was worth it. :rofl:
     
  13. Feb 5, 2021
    SFaulken

    SFaulken Member 2021 Sponsor 2020 Sponsor

    Marysville, WA
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    The 6.7 Powerstroke is setup this way, the exhaust manifold is between the heads, which simplifies the turbo plumbing considerably.

    This was actually pretty common with hotrodders with the nailhead buicks, and 301 Pontiacs, especially if you were doing turbo setups, because the intake ports were just so damned small, and restricted due to the valve angle, if you flipped them around they flowed better, even though the "exhaust" valves are smaller than the "intakes".
     
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  14. Feb 8, 2021
    Oldpappy

    Oldpappy Member 2021 Sponsor

    East Tennessee
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    I don't know how to tell them apart, but about 40 years ago one of my brother-in-laws installed a marine Chevy 327 out of a Chris Craft. He sure was surprised when he fired that baby up! It was the reverse rotation engine out of that old boat. He was able to figure out how to change it, but I don't know for sure what all that involved.

    As others said, probably the cam, distributor, and oil pump would be different. I am thinking the starter would be too.
     
  15. Feb 18, 2021
    4dawudz

    4dawudz Dale

    ADK NORTHERN New...
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    I had a DR Mercury 70 h.p. 6cyl. outboard (DR meaning direct reversing) the start button was on the bottom side of the throttle lever, the neutral position was off move it forward a little squeeze the start button, zoom off you went. Pullback to neutral it stopped pull back a little squeeze the button it started and you stopped...most of the time...I ended up doing this very slowly so as not to jump the dock!!! With the cover off you could see the distributer turn back so the timing went backwards. Of course it was a 2 cycle. I had it on a 13" Glastron...skipped along pretty good!!!

    Dale
     
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  16. Feb 21, 2021
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
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    That was an old Mercury from the 50's, should have kept it, I doubt there are many of them still running around.
     
  17. Feb 22, 2021
    Oldpappy

    Oldpappy Member 2021 Sponsor

    East Tennessee
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    If you like old boats I have one my wife keeps wanting me to get rid of.

    It is a mid 60s Starcraft 19' deep V with a V4 80hp. Yours if you come haul it away:beer:
     
  18. Feb 23, 2021
    Lockman

    Lockman My " Rosie" 2021 Sponsor 2020 Sponsor

    White City, NY 14617
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    From memory, The distributor gear & Cam shaft are the only things that make the Starboard side engine , different from the Port side engine . :study:
     
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  19. Feb 24, 2021
    Keys5a

    Keys5a Sponsor

    Florida Keys
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    I used to have a SBC 350 marine reverse rotation that had a gear drive cam, no timing chain. Yes, most had a reverse cam and distributor gear. Those usually have the raised numbers of the firing order ground off the iron intake manifold too.
    -Donny
     
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