I have 1998 Husqvarna WR250 2-stroke and the torque valve isnt connected and i am wondering if its worth it4 me to track down the part that ismissing to get it working. does the torque valve increase power much? please help cos im wondering whether i should sell bike and get motocross bike instead.
it's called the power valve. and yes you need to get it hooked up. come on dude use your brain.
It's probably referred to as a Torque Valve in the spare parts manual. But yes, the power valve is what gives the WR250 it's buzz. Hook it up!
The torque valve (it's called the power valve, by most manufacturers) changes the exhaust port timing, depending on the RPMs of the engine. The valve blocks part of the top of the exhaust port. As the engine RPMs increase, the valve lifts up. The distance between the top of the exhaust port's opening and the top of the cylinder is changed. When the piston is moving down on it's power stroke, the opening of the exhaust port is exposed sooner (due to the valve lifting up) and the ignited fuel exits the cylinder faster. This process of changing the exhaust port's timing, creates more explosive power for the engine. So of course if it was hooked up, the engine's performance would increase.
