Mikuni And Keihin Jet Size Difference???

[Semo Tri Z]

Does Anybody Know How To Compare Mikuni And Keihin Jets?? I Have A 320 Main In My Mikuni And Wanna Go To A Keihin, What Is The Equal Size In A Keihin??? The Main Jets Are Numbered So Different Its Hard To Tell. Can Ya Help???
320 Mikuni = ?? Keihin

[deathman53]

mikunu are about 1 1/2 the size of keihin, I'd start with a 165-170 on your bike, thats about what most 250r's with a pipe and porting use.