CBLOHR

Thank you for suggestions. I'm picking the bike up from storage over Christmas and will post pics and part measurements then.

My recently purchased 1975 Yamaha Ty250 appears to have an enlarged aftermarket reed valve intake. I had to cut a new carb to air cleaner boot by about 15mm to get it to fit without crimping. Does anyone know what brand of aftermarket "performance" reed valve upgrade blocks would have been common back in the day. Or does anyone know of someone who still provides a block and reeds that would fit? My current reeds are frayed and broken.