Re: Strange one this
Posted: Wed Jun 12, 2019 11:00 am
The difference between an X4 and X7 is 0.2mm in diameter of the main body. The X4 needle is very slightly richer. Cam Lam recommend a X4 for some set ups, but they also recommend a bigger main for a Mugello. Whenever I've built Mugello motors I've found the Cam Lam jetting to be pretty much spot on and just fine tune the main and needle clip depending on what type of pipe is fitted.
There is a page on MB website detailing the Delorto needles and which are richer leaner etc.
There is a page on MB website detailing the Delorto needles and which are richer leaner etc.