Dellorto Carb What is the right size?

Hi, I am interested in buying a Dellorto. I have heard that the Dellorto SHA 16/16 is a good carb for the 66/80cc. Is this the best one or would the 15/15 or even the 14/14 be correct/best? I am about 400 ft above sea level and have only external mods. Do you guys think I will need to alter the jet size? If so what would be some good sizes to try? I know you can do the solder and drill thing, but I figure I will order a few jets when I order the carb. To those of you that have the Dellorto--how is it? Thanks

bare bones howz it going I have a delloto style carby on my 48cc motor I had to play around with jet sizes standard is about .75 much too big .68mm better Im running .63mm with works well BUT cant tell any differance from the standard carby PS they look good Thanks mick29

Thanks for the reply mick29! No real performance increase? Bummer. Do you have any modifications or is your motor stock? Do you know what size Dellorto you have?
Thanks again

Buy a 18mm Mikuni...

Myself and a couple fellows I did bikes for tried the 16mm Dellorto and, like Mick, noticed no increase in performance over the stock one. I'm a great fan of solder and drill on an NT.

excellent improvement over original equipment Buyer:
danm8554 ( 17 [Feedback score is 10 to 49] )
Sep-14-09 08:34
BICYCLE ENGINE KIT MODIFIED CARBURETOR.....I taper bore stock carbs for $15.00..Here's a feedback from one of my ebay customers..email..motorhead48@gmail and I can provide pics

Thanks for the responses! There have been mixed reviews on the Dellorto in other threads (more bad than good). My NT leaks along with some other minor problems. I have used some of the threads for info on how to fix some of the carb problems (all kinda minor). Since I planned on buying a new one, I figured I would try and upgrade if possible.