Prolific Poster Award
Join Date: Jul 2010
Location: Grass Lake, Mi, USA
I almost never go on interstates with my SS, so I have found 15/41 perfect for back roads, including all the small town stop and go.
As far as making the bike run smoothly below 3000 , it can be done. You’ve already replaced the jet needles and emulsion tubes, they are the big wear items in the carb. Synchronize your carbs as best you can. Make sure your pilot jet is big enough. You might be able to use what you have, adjust the mixture screws ccw about 3 1/2 - 4 turns to start, adjust when we’ll warmed. With warm engine, air filter out, watch the diaphragm slides rise. They must rise together at lower rpm’s if the bike is going to run smoothly. If they don’t, check the diaphragms for leaks or damage, replace the o rings in the caps, and make sure the slides move freely. New plug wires and caps and plugs help the bike run smoothly. It’s old.
'96 Ducati SS900CR, '07 S4RS, '06 Busa, '77 Bonny,
'00 Superglide, '85 Sportster, '78 SR500