Yes, Im running 89 non-ethanol. I replaced the rod, piston and rings with stock ones.And I assumed you are using gasoline, as you did not give details.
Like Kart43 suggested, I'd start with a .039 - .040" on gas.
That's assuming no other mods (besides the pipe and air filter) have been done.
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Thanks and God bless,
Brian Carlson
Carlson Racing Engines
Vector Cutz
www.CarlsonMotorsports.com
Carlson Motorsports on Facebook
29 years of service to the karting industry
Linden, IN
765-339-4407
bcarlson@CarlsonMotorsports.com
I have a pod filter and header on my 390, with a stock carb. I jetted it to 1/16 but its super rich. What size do yall recommend jetting the carb to?