During one of our never-ending technical discussions, Jim Grubbs at Jim Grubbs Motorsports (JGM) suggested that we take a look at the flow difference between 30- and 45-degree valve seats. While ...
Turn off the shutoff valve to the gas line. Be sure to turn the valve one-quarter turn so that the handle is at a right angle to the pipe, as in this photo. Turn off the control valve. Remove the ...