Originally Posted by Fred Jan

The mono valve is brand new from low millage donor car, I took out the dash a month ago, replaced the felt on all doors and vacuum pods, rubber elbows, the suction return hose is just cool not cold at all, I saw online some members reported great results using propane mix from enviro-safe, bought the kit and the same result. I am planning to install a valve on the heater to prevent hot coolant from getting inside the car in the heater core, I don't know where yet to put it, on the manifold gauges i am getting 40PSI low - 200PSI height