Exhaust muffler cap

Discussion in '2-Stroke Engines' started by noble b, Jun 2, 2012.

  1. noble b

    noble b Member

    went for a long ride today and my muffler cap fell off and ran over it and bent it all to ****. so can you buy a new cap and where can i get one or do i have to buy a whole new muffler? if i do have to buy a new muffler is there a better one that this wont happen again. i have a grubee 66cc if anyone can help.

  2. wheelbender6

    wheelbender6 Well-Known Member

    I have not seen muffler caps sold separately. However, I have seen members improvise a muffler cap from the end of a soda can. Worth a try.
  3. noble b

    noble b Member

    Do you have any idea how they did it
  4. Fabian

    Fabian Well-Known Member

    At $20 - $30 for a complete new muffler, isn't it far easier to just go out and get a new muffler and be done with it - no messing or mucking about.

    Unscrew two bolts, remove old muffler; install new muffler; tighten two bolts and it's "job done".
  5. noble b

    noble b Member

    yea 20 30 bucks a week of waiting for the part and 13 bucks shipping. its worth the coke can just to quite that noise not to mention the money. im just trying to see all if there was something else i could do. but bent the cap back and it works just fine.
  6. Fabian

    Fabian Well-Known Member

    I have waited 6 years for a marriage proposal because i believe in equality and refused to do it first.
    Waiting 1 week for shipping is hardly stressful and a muffler is cheaper by many orders of magnitude than marriage (remind me to never do it again); a motorised bicycle by far the better option for life long happiness!
  7. Jefro50cc

    Jefro50cc New Member

    hey mate, my mate used deoderant cans bit more thicker, but yeah cut the top bit off at like 3qauters way and use the top of the deoderant can, not sure how he done it but take out the little nossel bit the cap sits on so the the top of the deoderant can has a little hole. then he used one of them round clamps to hold it on, made it quieter sounds good and will hope up untill you get a new exhuast, ive got a exspanion chamber and sounds great has no cap that comes off and performes great :)
  8. wheelbender6

    wheelbender6 Well-Known Member

    if you want to cap it with a soda can:
    Choose a can that tapers a bit at the top, to provide a tight fit.
    Saw off the drinking end of the can; 2 or 3 inches from the top.
    Drill a hole in the center of the top of the can; the bolt that held on the original
    end cap will pass through it.
    Insert the original bolt through the soda can lid and into the muffler and tighen it to secure the soda can end cap. It should seal as you tighten the bolt.
    You may have to butcher a few soda cans before you get it a good fit and sound level.

    There is a post on the site about it somewhere so I'll look for it.

    I know mufflers don't cost much, but it is fun to repair the motorbikes with things we have laying arounf in the garage.
  9. wheelbender6

    wheelbender6 Well-Known Member

  10. motorpsycho

    motorpsycho Active Member

    if you're going to spend the money on a new muffler, just wait and buy an expansion chamber.
    For a little more money than a stock muffler, you will get more ooomph out of your engine.
    of corse, it'll be a little louder, but with the right muffler on the end of an expansion chamber, it'll sound really good.
  11. dodge dude94

    dodge dude94 Member

    Wait, you guys WANT your bikes to be quiet? I took mine off to be loud. :D
  12. Fabian

    Fabian Well-Known Member

    Of course, you want your bike to be loud: to attract the attention of the police; to upset everyone who wishes to live in a quiet and peaceful (law abiding) neighbourhood and to bring undue attention upon those motor cyclists, trying to stay under the radar of oppressive regulation.
  13. motorpsycho

    motorpsycho Active Member

    of corse i don't want my bikes to be quiet!
    one of mine has an expansion chamber with a modified muffler, and the other had a straightpipe with a modified muffler.
    they are both louder than stock, but not obnoxious.
    there's a difference between a good loud, and an obnoxious loud.
  14. Fabian

    Fabian Well-Known Member

    Ahhh motorpsycho,

    i am sure your logic will work terrifically with the next police office that pulls me over after easily hearing the sound of a "good loud" engine in my push bike, then writes up a ticket for it's illegality:

    $1000 for unregistered motorcycle

    $1,400 to $2000 for driving whilst unlicensed if not having a motorcycle licence.

    $2389 for confiscation of the motorized bicycle under the anti-hoon legislation (in Australia) for exceeding the motorised bicycle speed limit of 20 kilometers per hour (12 miles an hour) by more than 45 kilometers per hour (27 m/ph) and a $600 cost to get your bike back plus the impound costs, if you happened to be coasting downhill at 65 k/ph (40 m/ph)

    $4000 if driving a motor vehicle whilst disqualified, as some people use motorised bicycles to get to work and back whilst on licence suspension.

    Then we have the EPA fines for an exhaust system that does not comply with regulations.

    Oh yes, all the more reason to make you bike stand out in the crowd, attracting the attention of a police officer, if not for the fact of some disgruntled neighbour (that likes his peaceful and law abiding neighbourhood) informing the police of your "good loud" motorised bicycle, requesting him/her to bust your arse, with every ticket in the book, as well as the other motorised bicycle riders who are trying to fly "quietly" under the radar.

    Three cheers for "good loud"
  15. motorpsycho

    motorpsycho Active Member

    If all of these things have you so worried, why do you even have a m.b. ? If I had all of that stuff to worry about, I wouldn't waste my time with a m.b.
  16. Fabian

    Fabian Well-Known Member

    Yes, it's a serious worry down under, but, i like to ride my motored bicycle; so it's quietly and stealthily under the radar that i will go; not bringing attention to myself or to others who enjoy this hobby or desperately need this form of transport.

    The same would go for any place which has an over governed society with some crank wishing to find a cause and beat their drum; making a name for themselves (council member, local politician, state politician); only too happy to attach themselves to a law and order issue, like stamping out (with oppressive legislation) evil people with "good loud" engines attached to their push bikes.
  17. Anton

    Anton Administrator Staff Member

    I have the opposite problem. I can't get my muffler cap off because the bolt is so stiff.
  18. Fabian

    Fabian Well-Known Member

    Anton, i would love to add a reply to your problem; wholly empathising with your problem, but somehow i'd incur infraction points ;-)
  19. Steve1990

    Steve1990 New Member

    Mine kept doing that. has a really long bolt in it now, doesn't seem to be coming loose, but haven't ridden it much since then either. When i dug it out of the garage the other day, it wasn't on the bike, so I had to do more digging to find it (luckily, I had put it in the box with all my other spare MB parts.
  20. Fabian

    Fabian Well-Known Member

    You know it's interesting that my bolt has never come off, though my ex girlfriend accused me of having a screw loose, because i spent more time with my motorised bicycle than i did with her.

    She offered me an ultimatum: It's either the bike or "ME"

    Thankfully i am still enjoying my bike; still smiling back at the day i rode off into the sunset