A mate has what I think is a Zenoah 26 (or a look alike) that has a Zama Carb fitted. The carb reed block bolts to the head first using flush head screws and the carb then bolts to the reed block. The pulse hole exits from the side of the reed block to the carb by way of a fuel type tube. We are having heaps of problems getting the engine to idle properly and think the zama is the problem. We were given a Walbro carb to try but the reed block for the zama is completely different. I can work the head and tap some holes to get the walbro carb to fit and the pulse holes to line up - but my biggest concern is I don’t have a block to mount between the engine and carb. Is a reed block necessary or can I just mount the walbro directly to the head with the same results? I'm calling it a reed block - but its really just a huge spacer or insulator like this:
http://www.himodel.com/engines/Carbu...ol_Engine.html
Thanks for the help.