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regular carbs vs smoothbores

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

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I have an 83 gs1100e and right now it has the stock carbs and recently I have been talking to a guy and he wants to sell me a set of smoothbores and what I would like to know is exactly what is the difference between the two and what kind of performance can I expect from these smoothbores do I have to do any other mods. when putting these carbs on and what is a standard price for these he says they are worth 1000 dollars this is in canada any help would be greatly appreciated......thanks.......mark
 
are smoothbores the same carbs as the ones as the GSXR-1000 slingshot carbs? If they are I can probably get you an entire 84 GS1150 for around 1300$CDN that has them already. This bike most likely needs a new head but it does put out 130HP when its running...

Steve
 
I have seen a good set of 33mm Mikuni smoothbores go for $300 US (about $400 Canadian, I believe) and less. $1000 Canadian is way too much! The smoothbore does not have a butterfly to disrupt air flow thus allowing more air into the engine which inturn (with the correct amount of fuel) allows for increased horsepower. Combined with a good header and pod filters the increase can be remarkable.

Hap
 
You can get a brand new set of Mikuni RS Flatslides with accelerator pumps for about $600 US, they are smoothbores. Slingshot carbs are still CV type carbs, not smoothbores. I'm running RS flatslides on my '85 GS700E and they made a huge difference over the stock CVs. You do have to roll the throttle a little to keep from bogging down since the throttle acts directly on the slides whereas CV carbs rely on vacuum to raise the slides. You will need a push-pull throttle assembly with smoothbores.
 
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