MOPED ARMY

I bored the whole thing out to 15mm. it works fine, so leaks or anything. I think youll be ok. As far a performance it will probably just give you better throttle response and will add to the performance of the bike all around, because your cramming more gas and air into the cylinder. having a smaller intake though only a few mm smaller does equal to a decent amount of volume, so it allows more air and gas.

Like i said on the other post, just clamp it, line the hole up vertically, and drill away. It goes quick.

I just picked up a dellorto 15/15 and would like to mount in on a Franco morini ..carb is to big for intake and I can't buy an intake to match..what do you use for a spacer to make up the difference

sorry about rambling on. For reboring the long hole, your best bet is a tapered reamer to get the cutting action going without totally beating the hell out of the machined edge, but a modified drill bit will work, but by the time you go through all of that I think you can buy one of those intakes. I don't recall mine as being too expensive. A heck of a lot less work. The angle of attack is a bit hairy, especially if you use a handdrill.

When you measured the bore you said you got 14mm. BTW, did you use set of calipers? Chances are, the hole is tapered because the rod that made the hole during the casting process was tapered, so it could be pulled from the casting once it cooled. The bore at the elbow might be 12mm.

The ideal intake would be slightly "s" shaped, but that would be cost prohibitive due to the unusual shape and drawing any cores.

77 mopeds