i took the carb into the engineer's and he has bored it to 41mm as he did with scoots. i had a blanking plate made for the end of the TPS shaft and most importantly i had a belmouth fitted.
most of you will have heard of this through dale. i had the alloy belmouth machined (as opposed to...
here is one i hope dale will help me with:
bored out 'scoots' 37mm carb to 41mm and it went ok after i decided to use araldite to bond the two lower chambers.
i test rode my FE400e bike and to cut a long story short; the bike wanted to go leaner on the MJ. fine except i went through 150...