Does the 39 PWK carb kill gas mileage?
 

Thats the whole point, The bigger the carb the more fuel it's gonna use, just like a 2 barrel carb and a 4 barrel carb.

Does the 39 PWK carb kill gas mileage?
 

No it isn't. If you dump more fuel in it then it needs, your just going to make the fuel mixture to rich and foul out plugs and suffer in performance.

Does the 39 PWK carb kill gas mileage?
 

If your jetted and piped correctly that WOULDN'T happen!

Does the 39 PWK carb kill gas mileage?
 

Let me put it this way. If you didn,t do any engine or exhaust mod's, and you put a bigger carb on it, does the engine need more fuel?

Does the 39 PWK carb kill gas mileage?
 

Thats not what he said, if you read it correctly he is adding an HPD trail pipe, bubba porting, lighter flywheel, sounds to me like the mods are there.

Does the 39 PWK carb kill gas mileage?
 

At this point, I usually say thanks for all the replies, but not all the replies were helpful. I know it will take XXX amount of fuel to run with my mods if I have a 27mm carb or a 483902 mm carb. I'm under the impression that fuel mileage will only slightly decrease to compensate for the additional power that the 39 PWK carb will offer.

Does the 39 PWK carb kill gas mileage?
 

I guess your missing the point. All the engine and exhaust mod's he's doing is causing him to need more fuel. The bigger carb doesn't mean more fuel like you say. A bigger carb means more air flow. You get more fuel by changing the jet's bigger, not the bigger carb. Do you understand now.

Does the 39 PWK carb kill gas mileage?
 

Your carb doesn't make power like you think. It helps make your mod's work better. It allows more air and fuel you need to forfill your mod's needs.

Does the 39 PWK carb kill gas mileage?
 

gunman457,
Your carb doesn't make power like you think. It helps make your mod's work better. It allows more air and fuel you need to forfill your mod's needs.


But you stated above that it doesn't deliver more fuel, now your saying it does, when are you gonna get your so called "facts" straight?

Does the 39 PWK carb kill gas mileage?
 

its going to use more fuel, but most of it will be to the ground. becuase they shake fuel out the overflow like theres no tommorrow at 1/8 to 1/4 throttle. even jetted correctly(which mine is) you will use more fuel.

just FYI with a pipe and a stock cylinder I ran some drag races against a friend I run 5 times before making a change and 5 times after getting the PWK on and jetting it. each time I would loose by more. the bike is definatly more responsive and felt faster but it just wasn't in these races.

however once I ported the PWK was a neccasity as I could not keep the mikuni's bowl full on fuel no matter what I did.