Thanks to all those who helped me I.D. this motor, now that I know what it is, I need some help getting it running. (original post here: http://www.rcuniverse.com/forum/m_11...m.htm#11138067)
In a nutshell, webra bully 35, now with a JTEC pitts muffler, original carb=HDA 48 (21-245), new carb =WT 610, CH ignition (older unit) The best I could get out of the motor so far is 6500 on a 18/10, but to get it to transition I need to fatten up the high end which drops it to 6100, this is with the original HDA 48. I believe the high and low needles are missing either 1 or 2 washers and the o-rings, but I cannot find these to replace them. I put the WT610 on hoping to solve the transition problem as it is pumped. Now the engine will only run through its prime and die. I was able at one point to get it to idle(ish) but only with it choked. I have rebuilt and cleaned the carb, and also tried raising the needle lever to almost flush with the case. It has good compression and spark (*also replaced plug and both gaskets on carb/mount). I dont know whats left to try, and am fairly new, but not in the dark, to gassers. It seems to be an issue with the idle and high circuit as the start side seems to do what its supposed to. Any help at this point with either a source for the illusive needle kit for the 48 or how to cure the 610 would be greatly appreciated,
Jim