Originally posted by geebeeez
I tried the engine with the carb settings that AFM suggested and they seem to work perfectly. I got the engine used but it seems it was only started once. I did not have a manual so I set the needles to what would be normal for an RB carb or nova. Which is 3.5 turns out on the high end and 5 turns out for the low end. Well it ran like crap with those settings! The sirio carb seems to like settings that are almost the reverse of a nova carb. I have leaned the engine out from the 5 turns on the high end to about 4 turns out to about 200 deg. F. I think it will end up at about 3.75 turns out when done. Iam using an RB 9886 one piece pipe but I think a sirio one would be best. This is also the hand modified version by M. Collari with the orange head. Very fast engine! I was suprised to see that the sleeve in this engine did not look hand modded at all. Only the crank on the turbo slot(not much,just polished) and alot on the inside of the case itself. Everything is engraved with his initials. Thanks alot for the help AFM, it would be even more helpful if sirio would put that kind of information on their website
GLAD YOU HAVE IT WORKING CORRECTLY, NOW ENJOY THE POWER.
YES IT IS A COMMON MISTAKE WITH NEW SIRIO OWNERS TO SET CARB AS IT WAS A NOVA BASED ENGINE. ALSO BREAK-IN TIME IS SHORTER THAN NOVA ENGINES. YOU WATCH THESE TWO THINGS AND YOU'LL ENJOY YOUR SIRIO.
AFM