above: stock airbox with Trinity/McDermott carb adapter installed
above: Trinity/McDermott billet carb adapter
above: Keihin 35mm PWK carburetor
Yamaha Banshee YFZ350 CV Carburetor Single Carb System. CV = Constant Velocity.
A two stroke engine intakes 90% of its induction on the upstroke, so here’s how it works in its simplest form:
-The pistons upstroke creates a vacuum which opens the reeds and pulls air through the carburetor which in turn pulls fuel from the float bowl, BAMB! You have Air/Fuel!
-When the piston reaches top dead center it then starts its power stroke, this causes a positive pressure under the piston which closes the reads. This also cuts the carburetion off.
-Now here is the magic, the Banshee pistons are 180 degrees apart, which means when one piston is at TDC (top dead center ) the other piston is at BDC (bottom Dead Center) Which means for the most part when one set of reeds are open the other set is closed. That means that we are feeding 175cc ( Half of our 350 ) with 35mm of carburetor, which is awesome.
Advantages:
- 1 carburetor to jet
- easy pull single cable thumb throttle
- Great bottom end
- Great top end
- Clean new look
What do you get in the CV system:
(1) 2 into 1 CV billet intake
(1) Rubber carburetor manifold
(1) Keihin 35mm PWK carburetor
(1) Carb jets
(1) Fuel line
(1) Clamps
(1) Terrycable Braided throttle cable (Thumb or Twist)
(1) Gaskets
(1) K&N air filter and outerwear(clamps directly onto carb. requires airbox removal)
-or- (1) billet carb adapter. Oring seals in adapter and slides over carb.
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