RE: Gas engine parts interchange data
I find all this fascinating. Here's what I can share regarding exhaust.
Near as I can tell, early RCGF 45, CRRC 45/50 w/side intake, Zenoah 45, TGY/Turnigy (HobbyKing) 52, all use variants of the same angled exhaust port cylinder, appear to share exhaust dimensions?
How many use the same as the CRRC 26 (34mm bolt hole spacing)? RCGF/Aerovate 26 very close w/32mm spacing, DLE 30, Zenoah 20/23/26?