exahust problems

Discussion in 'Motorized Bicycle General Discussion' started by razorman305, May 1, 2009.

  1. razorman305

    razorman305 New Member

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    i have a small hole for my exahust on the end that can be removed and i was wondering if it would hurt to remove it. it gets red hot and i think it is double acting as a muffler... would it be ok to remove it?
     
  2. Goat Herder

    Goat Herder Gutter Rider

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    Probly gonna need a pict of this one I got nothing. More information would be helpful. Almost sounds like restriction to be visibly red hot. Last night I had a Night Mare I dream-et I was a muffler in the morning I woke up exhausted......Sorry Snork sounded funny at the moment.
     
  3. Cabinfever1977

    Cabinfever1977 New Member

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    i think he wants to remove his muffler,and no dont remove it.
    and yes it gets hot,its a muffler,and dont touch it or it will burn you.
     
  4. Goat Herder

    Goat Herder Gutter Rider

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    Yes removing the muffler would cause a lean condition. Can leave a burn spot at the exhaust port. Not a good thing.
     
  5. Goat Herder

    Goat Herder Gutter Rider

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    Your right if it were getting red visibly hot that CH would melt and go away!
     
  6. Goat Herder

    Goat Herder Gutter Rider

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    The 2 stroke has no valves it breaths in two directions. Taking the muffler off will make it snort up un oiled air. You need an expansion pipe to prevent this problem. The term is called scavanging. With a tuned pipe it is the most effeciant it will snort back in unburnt exhaust that has oil in it. Making more power to boot. The stock mufflers are lacking a little for best performance... Hope this helps? This might shed some light http://motorbicycling.com/f30/2-stroke-expansion-chamber-3317.html
     
  7. Goat Herder

    Goat Herder Gutter Rider

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    http://motorbicycling.com/f15/sbp-jack-shaft-rules-6862.html Here is a link to stuff I have been working on. In the last section of tensioner #2 I changed my air filter it is actually a right guard deodorant cap with ten plies of shear energy . Youl get my point. The added distance and bigger opening I have the stock filter out done theres is no oily mess there. It matches the cfm of air moving now it is contained.
     
  8. razorman305

    razorman305 New Member

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  9. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    You may be running too lean if it truly gets red hot....I have painted a couple with regular (non heat) paint, and they don't get so hot as to burn the paint off.
     
  10. razorman305

    razorman305 New Member

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    if its blowing black smoke its to rich though correct?
     
  11. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    I have never seen a two stroke blowing BLACK smoke.

    The best indicator is to pull the spark plug and look at the color. It should be brown to black, with a little oil on it. White or light grey is bad.

    Now back to the exhaust....I have had a couple of pipes where the outlet hole looked o.k., but when I removed the cap, the weld had actually closed the hole to around the size of a pencil! Pop the cap off and have a look at the hole from the inside.

    I "adjusted" mine with a dremel tool.
     
    #11 Bikeguy Joe, May 2, 2009
    Last edited: May 2, 2009
  12. razorman305

    razorman305 New Member

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    a really really dark grey is more like it, not like diesel black, like lawnmower black
     
  13. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    I'd have a look at the plug, and the outlet hole just the same...
     
  14. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    What is your gas to oil ratio?
     
  15. razorman305

    razorman305 New Member

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    sixteen to one
     
  16. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    That's too rich, especially with synthetic oil....go to 24:1 despite what the "instructions" say. That is based on using regular automotive motor oil.
     
  17. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    16:1 also makes the gas to air ratio leaner and though it makes a lot of smoke is not good for the engine.
     
  18. razorman305

    razorman305 New Member

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    my gas t oil ratio is 16:1
     
  19. razorman305

    razorman305 New Member

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    but one of the other guys just told me 24:1.. will that work?
     
  20. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    Re-read.........
    24:1 is what you want. 16:1 is too heavy with oil.

    Check your plug for a true indication of how your engine is running.
     

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