Exhaust lost exhaust cap

Discussion in '2-Stroke Engines' started by jatgm1, Jul 6, 2016.

  1. jatgm1

    jatgm1 Member

  2. Frankenstein

    Frankenstein Well-Known Member

    I don't know where, but if you find a place let me know, need a cap for a couple exhausts I have.

    If you just bought it, and it was on eBay, I'd suggest contacting the seller, tell them it simply fell apart while riding which it obviously shouldn't have. They could opt to send a new cap, or they may suggest sending the muffler back and they will send a replacement, defective items are covered by eBay policy by being the sellers responsibility, meaning they are required to pay return shipping charges for defective items.

    Good luck!
  3. Frankfort MB's

    Frankfort MB's Well-Known Member

    I wouldn't worry about it unless the noise bothers you. I don't see any power difference
  4. jatgm1

    jatgm1 Member

    if i leave the cap off and ride it will it be faster than it would be normally? how does it affect the performance?
  5. Frankenstein

    Frankenstein Well-Known Member

    It doesn't affect it, it's just louder, off chance could make it faster if it was previously too restrictive, but could also make it slower, a bit of restriction helps keep the new gas/air mixture in the cylinder as the port closes off, which is the idea behind expansion chambers, they help force the Escaping clean gas/air back into the chamber at just the right moment.

    You'll find out soon enough that every engine is different, and each requires it's own fine tuning.
    Frankfort MB's likes this.
  6. butre

    butre Well-Known Member

    if it's not an expansion chamber then back pressure doesn't matter. you can ride it as is if you can stand the noise.
  7. Frankenstein

    Frankenstein Well-Known Member

    I plugged up a muffler with too many pot scrubbers, back pressure mattered...
  8. crassius

    crassius Well-Known Member

    that cap just forces the exhaust back up into body so that it will go thru the baffles to get back out thru the tube - seal off the end with most anything that you can move the tube into