Exhaust manifold Heat Riser Question

Posted by Chuck M McDonald On 2017/11/13 12:54:01

My exhaust manifold is missing the exhaust manifold riser weight and did not permit the flapper to open resulting in the insulator spacer that Max Merritt sells between the carburetor to intake manifold to melt, the spring holds the flapper in the closed position and when the spring expands the weight on opposite end of the shaft provides enough weight to open the flapper all the way, so what is my question? I just removed the spring and turned the shaft in the rotation that moves the shaft to the open position which is clockwise on the weighted end of the shaft, my question is when in this position is the flapper in the fully open position? the only way to see the flapper is to remove the pipe or entire intake manifold and I really do not want to do that.