What jets do I have?

[ottoguy]

Is there an easy way to tell how your carbs are jetted? I just picked up a 1993 Katana 600 as my first bike. The previous owner put on K&N filters and a Vance & Hines SSR2 exhaust. I would like to take off the K&N and replace it with a stock airbox and air filter. However I'm not sure if the carbs are jetted to compensate for the exhaust/intake? If so will the stock filter/intake box cause an issue? I don't really want to get into jetting carbs just yet since the bike is currently running.

[Kfreak]

Can't hurt. It will probably run better. You are not going to know the jetting until you take the carb's apart or just ask the previous owner what he did to it.

[scottynoface]

Can't hurt. It will probably run better. You are not going to know the jetting until you take the carb's apart or just ask the previous owner what he did to it.

+1 to all of this. However, unless the previous owner was decently knowledagable about motorcycles, I bet the jetting is still stock. If it IS still stock, then putting the stock airbox and filter back on should have the bike running a lot better.

EDIT: K&N filters and a full exhaust, that bad boy definitely SHOULD be jetted.

[Kfreak]

Here is an idea of what the p.o. of my bike did. Yoshi exhaust. Uni filter.
Main fuel jets, 2 were 105's and 2 were 102's. Why in the world would you make the bike leaner than it already is after doing the changes? Go talk to the P.O.

[ottoguy]

I will probably try the stock box and filter. I doubt the previous owner knows much. He didn't seem like the maintenance type and said he had gotten the bike from a friend a year ago.

[scottynoface]

Pop the top of the carbs and see if your needles are stock?