This combination simply will not work. I installed a Holley pressure regulator and hooked it up to the mechanical fuel pump. I also installed a very precise pressure gauge to it. The pressure will maintain a setting when the engine is set at a constant throttle such as 1000 rpm. The engine would run fine at 2 psi. However, when throttle was applied, the fuel pressure would go up to 6 psi flooding out the carb. Now, I am in the fluid control business and these regulators are worthless for our application. What is needed is a modulating pressure regulator. A modulating pressure regulator will keep the pressure constant at any throttle setting. The only thing is, a modulating pressure regulator is big, heavy and not practical for aircraft. So, I removed the Holley pressure regulator and pressure gauge and disconnected the hoses from the mechanical fuel pump. I then placed a tank on top of my front deck and gravity fed the carb just because I wanted to run the engine. Without thinking about fuel being in the mechanical pump, I hit the switch, engine started, mechanical fuel pump emptied itself all over the engine....FIRE....I almost had a heart attack. Flames were dancing everywhere around the back of the engine. I shut it down, ran to get a fire extinguisher which was about 15 feet away, grabbed it, turned back to the plane and the fire was out. No my pants were not wet...but close. After a close inspection of the engine, I saw no damage, even to the wires, so I started the engine up, let it run and thanked God I still had my plane. I have two choices. One is to install a small header fed from my wing tanks or sell the Aerocarb and get another carb.
Mark Jones (N886MJ) Wales, WI USA E-mail me at flyk...@wi.rr.com Visit my KR-2S CorvAIRCRAFT web site at http://mywebpage.netscape.com/n886mj/homepage.html
