Abstract: A reed valve assembly includes a two ported base member adapted for placement within a fuel/air supply of an engine. The base has a reed cage with first and second reed cage faces defined on the downstream face such that the faces of the reed cage define an upright V opening downstream relative to the base. Reed petals cover openings in the reed cage faces and prevent back flow from the downstream side to the upstream side of the valve assembly. Flow from the upstream side to the downstream side is accomplished by the reed petals flexing towards one another. The reed petals are held in place by a clamping bar, which allows adjustment of the flexing tension for fine tuning of valve operation.