Originally Posted by
Glowgeek
The proprietary Saito gas carbs, sans the early FG-20 version, run spectacularly. I have three FG-21 and an FG14. One of the FG-21 has about 3 gallons run through and the oil comes out almost completely clear with no visible smoke except upon acceleration from a prolonged idle.
If that is true, then indeed I would consider that "spectacular", after all carbs are analog devices and cannot be tailored to every specific running condition.
But so far, I have not yet seen that, all the ones I have seen produced some black crud from the exhaust. Not much, but still...
The smoking on acceleration after prolonged idle is something that cannot be avoided when using mix-lubrication. You would need separate oil injection for that. My conversions do that as well.