Carby Carbs

Discussion in '2-Stroke Engines' started by Egor, Jun 14, 2007.

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  1. Egor

    Egor Guest

    Anyone out there using another carb on there China engines. I ditched the original carb, and I will never go back. The one I am using came from an old Yamaha, but any good carb, correct size should do. There was one I saw out there but I cant remember who had it listed, but it slipped right on and only needed a spacer on the Motor mount to get a little room. Look for the Idle Mixture Screw and you have it. I think anyone who tries a good carb will be amazed. Have fun, Dave

    PS: Any one using a Walbro?
    OK - Ill look for the place to buy them, I think it was about 60 - 70 bucks. I think everyone would like the way it adds to the engine. I am suprised to find it is not more common to see the new carb.[/b]

  2. JosephGarcia

    JosephGarcia Guest

    List the actual benefits it has over the standard carbs. and the exact models which are compatible, along with websites to purchase them?

    Not trying to ask too much, but a bit more info would be cool, and I'm willing to bet some of us would go buy newer carbs if we knew where to purchase them and which ones.
  3. SlicerDicer

    SlicerDicer Guest

    Egor I would ask mike when I spoke to him on the phone he talked about somebody using one. I see no reason why it would not work. :grin:
  4. Egor

    Egor Guest

    There are so many folks in the forum there has to be one that has the newer carb. I know Don GruBee has had it on his sight, but I find it hard to find a place to buy the parts. I have a club and am a part of another forum, I think they have talked about the carb with a Idle mixture setting. Have fun Dave
    PS: This is off an old Yamaha, it was a rotary valve eingine so there is no provision for an air filter.
  5. SlicerDicer

    SlicerDicer Guest

  6. Guest

    Guest Guest

    Which Mikuni is that? I mean what mm?
  7. Egor

    Egor Guest

    I think it is a 18mm, on these engines it is not necessary to see how big you can get, just how good. There is nothing you can do to the intake port to get a proper runner for a large carb, and you don't need it any way. The original carb sold with this engine just barely works, if the concept was any good then why is it you don't see them on a small motorcycle. You give away all the low end performance,besides fighting to get it to idle, with no idle jet. Have fun Dave
  8. Guest

    Guest Guest

    Yeah, I wouldn't go any larger than a 22mm with these bikes. I agree with the statement that if these carbs were a litlle larger you could use them and a wheel chock.

    They are MUCH more primitive than a model airplane carb fer cryin' out loud!
  9. Egor

    Egor Guest

    I found a pretty good looking carb, it is an Amal 15mm, $82.50. The oly place I can find it though is MopedShop, They have the correct sleeve to adapt it to the manifold, I don't like the cable runners, but it would be ok. The air filter looks like it would actually work. Have fun Dave
  10. Wrench66

    Wrench66 Guest

    Hey Dave, good thread.......I wonder why it hasn't caught on yet? The little Mikuni carbs like the one you are running there is a great carb and very easy to tune (jets are avail most any off road shop can help). I agree that using a carb without a pilot circuit is a frustrating situation at best, the VM18 Mik has all you need AND would be easily tunable for a nice reliable idle and xlnt high speed running. Those carbs are avail lots of places for around $70 I believe, I manage an off road repair shop and can find out for sure.
    I saw the picture you posted of your setup and immediately thought of those little 80cc Yamaha scooters from around the 60's, does the carb you have mount right up to the Chinese manifold? Would be cool if it was a simple as that huh?! Did you have to fool with the jetting to get to run correctly?
    I am days away from ordering a Dax engine kit for my beach cruiser and I refuse to put up with the sub standard single jet carb they make you use.
    I'll find out who has those 18's.
  11. alesterfeind

    alesterfeind Guest

    Old Carb New Carb

    I know this has probably been answered somewhere else before, but I see mention of the "updated" carburators. Has there been some modification over the last year or so to the carbs that come with these kits? I have one motor on a bike that runs ok, and another motor in the box ready to put on. Both have the same carb. If there is a new one, is it best just to order it now rather than install my other engine with the "old" carb if that is what it is?
  12. The main difference between the new Chinese carb and the old one is the material the piece that slides up and down is made of....newer carbs are a kind of plastic while the older one has the brass like piece.....I had the old version and had to hone the brass piece to get it to operate freely (Duane at dax gave me that hint)...Later carbs have plastic slide which don't stick or need to be least the ones I've seen....
  13. alesterfeind

    alesterfeind Guest

    A little more description...

    Andy - I am not very familiar with the carb. What part slides up and down? I have a choke lever that moves up and down, but seems to work fine. Is that what you are talking about, or is it something internal?
  14. gone_fishin

    gone_fishin Guest

  15. alesterfeind

    alesterfeind Guest

    Thanks. I try using search, but it doesn't hit as specifically as I need it to, or I am just not using the right words.
  16. I wonder if this carb would work. e-bay # 230168259465

    For Honda. I wonder if it would line up without a manifold for those engines with confined frame room. Of if there's a manofold out there that would work.
    The price sure is right.
  17. I have some of the Grube carb kits. If you are interested, either email, or pm me.
  18. HI,
    That part that I spoke about moving up and down was the part you had to hook the throttle cable to inside the carb....the barrel shaped piece that moves itself and the needle up and down inside the carb when you twist on the throttle...On older carbs the "barrel" looking piece was made of brass looking metal...on newer carbs the "barrel" piece is made of some type of plastic....
    Hope this helps...If not I might try to learn how to post a pic and upload one for you...
  19. alesterfeind

    alesterfeind Guest

    I looked back at some of the old posts and found what I needed. Thanks for the help. I am starting to understand these motors now, and this forum has been a big help.