cb360 no power past 55mph

[78whiteorbs]

Got a 76 that I am running unis and wrapped headers on.
Found two ripped diaphrams and replaced them .Carbs have been uktrasonically cleaned. Running 120 mains....

Acts like ifts has a rich bog at about 4.5-5k rpms.... cannot ride past that... besides this bike runs great. I know the unis and open exhaust are not helping my cause here which is to ride but dont have stock air filters or mufflers.
So close....help if you can!

 

[Sonreir]

120 secondary mains are pretty big. Drop to 110 and see if it gets better.

I run 115s on my 360 and I'm running +2mm bore and a hot cam.

Double-check your timing and compression, before you mess with the carbs though.

 

[danker16]

what do you have for stock carbs, they must be CVs? what are the stock jets? and what do you have on it now.
and 120 main is toooo big for a 360

do the above, check timing and compression..

 

[coyote13]

Check that your choke is functioning properly, and is off