I use my ultrasonic cleaner on a very regular basis, it works great on alloy and carbies including brass jets. I have had excellent results on all the carbs I have put through it. A general purpose degreaser (waterbased) and about 60 degrees temp, just vary the time till it's clean. Normally 1hr. Can do 4 carbies at a time (must be dismantled) and that's with the small parts in a glass jar.
