Poor running on left hand bends !

[quadguy214]

Hi

 

Does anyone on here run a banshee with an RD/RZ 350 YPVS engine fitted ?

I have this engine fitted in mine (i bought it like this) and after owning several RD/RZ 350 ypvs's some years ago, I know the engines/electrics inside out. It also has the powerjet carbs fitted that were designed to go with the powervalve engine in its original application.

 

The problem is this: -

 

My banshee will run fine in a straight line or when taking right hand bends, but when it comes to left hand cornering (especially if they are long sweeping flat out corners), the power depletes as if the engine is suffering from fuel starvation. When the quad straightens up again, it is ok, and like I said, right hand corners of any description are not a problem.

 

When used on two wheels, obiously the engine leans with the bike and via centrifugal force the fual in the float chambers proabably stays fairly evenly angled in the float bowls. With the quad however, the engine/carbs remain relatively level even when cornering which has the effect of throwing the fuel in the float bowls more heavily to the left or right when cornering.

 

The only thing I could think of that may have caused the problem was the power jets, these are additional jets fitted in a pipe that connects the float bowl to the carb. These jets are located on the right hand side of each float bowl and when left hand cornering, the fuel is thrown to the right forcing it through these small power jets rather than the main jet.

 

So I thought, lets block off the power jets so that the carbs act like standard banshee carbs - THE PROBLEM STILL PERSISTED which I really can't understand.

ANY IDEAS