The best carburetor on the market that isn't too expensive?

Discussion in '2-Stroke Engines' started by rjriggs, Sep 25, 2015.

  1. rjriggs

    rjriggs Member

    What's the best carburetor available for under $50? Also, will upgrading the carburetor alone give me better performance, or must I upgrade the exhaust as well?
     

  2. Purple Haze

    Purple Haze Active Member

    The RT, which is a clone of the Dellorto SHA. Any carb that you use will need to be tweaked (jetting, needle height, etc.) That said, I run the NT "speed" carb on my mildly modified 66cc and it runs well with a #62 jet and the needle clip in the top groove. They can be had for less than $20 on ebay. Carbs are just part of better performance, it's the total system that needs to work together in harmony. Just a carb change will most likely only net a small increase in performance. Get the stock system running optimally before you start throwing money at it.
     
  3. rjriggs

    rjriggs Member

    What is different about the RT carb and NT speed carb in comparison with the stock?
     
  4. Purple Haze

    Purple Haze Active Member

    The RT (dellorto clone) has a flat slide, better fuel atomization, and just looks better. They take a different cable and air filter from the NT (stock) The "speed" is exactly like the NT except it has a slightly larger bore size and a built in shutoff valve.
     
  5. Fabian

    Fabian Well-Known Member

    You get what you pay for, and the best carburettor is a chainsaw style carburettor, coupled to a reed valve intake system.
     
    butre likes this.
  6. HeadSmess

    HeadSmess Well-Known Member

    sticking a pipe in a hole drilled into the intake works as well... if you dont need to slow down at all :)

    carbs are just for the weak at heart. straight flowing venturis, thats what im on about!
     
  7. HeadSmess

    HeadSmess Well-Known Member

    the basic difference(except for the walbro that has too many pros to list any cons) with any carby is the self satisfaction and delusion is proportionate to the amount invested.

    it cost more so it must be better!

    on that theme...spend as much as you can but dont be too upset when the stock standard worked just as well if not better with a darn site less fiddling around.

    go deal with real engines where carbs actually do make a difference.
     
  8. butre

    butre Well-Known Member

    if you don't mind making your own intake plenum then a PZ19 works very well. Idles nicely and the bigger bore is enough for my aggressive porting
     
  9. Jere814

    Jere814 Member

    The dellorto carb is a very nice carb. I love the fact that it has automatic choke. But I went through 3 of them carbs because I over tighten them. So if you get one I'm telling you that you barley want to tighten it to the intake.
     
  10. jaguar

    jaguar Well-Known Member

    both the NT and RT do not have a separate idle circuit. that is to say that a normal carb has three circuits, for the small, medium and large slide opening. all three of them are adjustable. With the RT and NT you can only change the main jet. They are not good systems and you can't get the engine to run really right on throughout the whole range of carb slide opening. I tried the SHA and it had a good design for my engine when I lived at 8000ft altitude but when I changed to live by the beach I had to modify it to run ok at small and medium slide opening. see my site which explains what I did.
     
    bidardian likes this.
  11. the walbro rse valve kit is in my honest opinion the best , not only do you get a reed valve but you get a carb that is well made and adjustable with highs and lows
     
  12. Purple Haze

    Purple Haze Active Member

    The key point in this thread is "under 50 dollars"
     
  13. jaguar

    jaguar Well-Known Member

    you get what you pay for.
    ever hear the saying "cheap is expensive"?
    you buy cheap, get sick of its cheap quality, and then buy expensive, having paid much more than the smart person that just shopped for quality from the beginning.
     
    marshall johnson and Dustmonkey like this.
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