Single Or Dual Carbs

[750SX]

The point of dual carbs isn't more fuel delivery or more air delivery.
The point is precise signal to a fuel delivery system without confusing it with overlapping vacuum pulses.

You don't put triple-pipes on a triple cylinder to "have more pipe", or to have it breathe easier. It's done to get accurate pulses that don't overlap.

Bingo!

 

[waxhead]

I just don't believe you have the same carb signal strength with a big single carb as you get with dual carbs,I ran into some big problem with carb signal trying to run a 46 on my X2 Rotax motor,believe me I know how to set up a carb by now,but no matter what jets ,needle and seat or popoff you tried it would not run correctly and start correctly,one or the other but not both.I finally put a 40mm Mikuni I series carb on it and a different flame arrestor and it runs great and cranks great now,I am going to try duals on it next,I believe they will be just as responsive and make a LOT more power over the single carb setup.My motor is lacking on bottom end somewhat so it has to get it into the rpm range where it pulls as quickly as possible.

When you get to thepoint that your intake flow is alot less than your carb you will have that issueand you will find that a smaller carb will run better than a larger carb

 

[hangtime]

Wow ,back from the dead .:bigok: