I have a converted Ryobi 31 that I bought from a man who did conversions a few years ago. Can't remember his name but it was at the West Coast IMAA meet at Castle Airport. He told me that it was test run and had lot of mods to make it better, including battrery ignition. The price was good so I snatched it up. It only had a single mixture screw on the carb so I asked him if there was a better carb and he told me yes, and he would send it to me. And so he did, and I put it in a bag until last week, but now it's in a plane. It wouldn't draw fuel so I checked the tank, lines, etc. then pulled the carb and checked the screen and pump diaphragm. What I found was the the transfer port for the pump wasn't drilled though and that this carb was designed for an external pressure hose for pump pressure pulse. Sooooo, I have the wrong type of carb apparently.
My question is.....what are my options? The original carb is in storage in the USA and I can't get it because I'm overseas. If I have to replace it, what carb should I buy and from who?
This carb is a WT-340 with a 14mm throat at the butterfly. From what I have read, 11mm is best.
Can an external pressure tap be added on the plastic adapter at the rear of the engine?
Any help will be greatly appreciated!
Brad