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Home Forums Shifter Karts CR80 Jetting help Reply To: CR80 Jetting help


Gary Smith

Hi Bob,

Are you running an airbox or a K&N style air filter?

What altitude are most of your tracks?

Most of my tracks are about 1,000 feet above sea level, I run a K&N style air filter, I am running a 195 main.

If you are running an airbox, I would try 190 or 185, I’ve heard go down 2 jet sizes for an airbox.

What ever you do, check your plug every time you make a jetting change. You are looking for the center insulator being brown to light tan, if it is white or gray, you are too lean.

Hope this helps.


#55 Honda CR80