Dual exhaust for a Chinese 80cc engine?

Discussion in 'Introduce Yourself' started by Lolokustoms, Dec 29, 2010.

  1. Lolokustoms

    Lolokustoms New Member

    I'm pretty new to 2 stroke engines and I have just got started on my 1st project,a motorized schwinn occ stingray chopper with an 80cc engine. What I want to know is if a an exhaust that splits into two tubes and to fishtail tips would actually work. If so,would it reduce performance? I'm also trying get as much ppeer as i can out of the engine. Any help is appreciated!

  2. wheelbender6

    wheelbender6 Well-Known Member

    I have seen a China motor with dual exhaust on a forum. I'll see if I can find it.
  3. wheelbender6

    wheelbender6 Well-Known Member

  4. Lolokustoms

    Lolokustoms New Member

    Thanks! I thought a dual exhaust would actually reduce the performance on the engine due to back pressure or something like that. Do you think have a dual exhaust that splits into 2 at the tip so i can have exhaust coming out of both sides of my bike would work? I'm tryin to go for a cool chopper look ;)
  5. wheelbender6

    wheelbender6 Well-Known Member

    I don't think you will lose performance since your exhaust pipe is a long one.
    I don't know where to get an exhaust "splitter". You will probably need to adapt something from a lawn mower or a plumbing fitting.
    Your performance questions will be better answered in the "Wild in the Streets" subforum on this site.
  6. Lolokustoms

    Lolokustoms New Member

    Yeah i took some measurements ealier and the pipes are going to be around 45 inches long! lol..If i cant find a splitter i think I might have to buy some pipes and custom make a splitter. Thanks for the help!
  7. Dave C

    Dave C Member

    Yah, you'll lose performance but that has nothing to do with looks:goofy:

    You can always cobble something up from copper plumbing fittings brazed together and use the silicone tubing from sick bike parts to tie things together.
  8. Lolokustoms

    Lolokustoms New Member

    True. Im more of a performance guy,but the custom dual exhaust would look real cool! I think I'm just going to use steel tubing since it's easier to weld.
  9. Albatross77

    Albatross77 Member

    I want one!

    Sounds awesome let us know how it goes and maybe post some pics i have same bike with the 49cc engine and would love to do the same thing.

  10. PatrickW

    PatrickW Staff Member

    I don't know what research all of you have done, but before you start cutting up and trying to weld that thin pipe (I know, I've done it) have you tried something simple like the J.C. Whitney catalog? They have pipes and splitters in all sorts of shapes, sizes, and configurations in chrome and plain metal. It may be a very cheap and effortless solution...[think outside the 'bike box']. In the alternative, I'd try a local, independent garage that installs mufflers on cars, and "bends and cuts their own exhaust and tail pipes." You might get away without even getting any grease under your fingernails...<grin>
  11. james65

    james65 Member

    dual exhaust

    Small overall power increase but nothing like a expansion chamber would give you.

    Attached Files:

  12. Lolokustoms

    Lolokustoms New Member

    I just ordered the expansion chamber from sick bike parts,im going to put it all together in welding class at school and im gettin help so it shouldnt take me to long to install it..hopefully ill get pics up in about 2 weeks! i appreciate the help
  13. Albatross77

    Albatross77 Member

    See if you can get some flared pipe cut at angles for the tips would look great