z wrench report 1986 jetting??? help!

[nipper]

hi this is driving me nuts as i have no idea where to start with jetting and my z keeps on getting an oily plug and cuts out!! i have the wrench report phase 1 done on it and i know the jetting for the 1985 z is stock 470 to 490-500 sea level but does anyone know where i should start with the 320 stock 86 z jetting?
is jetting the reason the z is getting an very oily plug when i rev it up for a few mins? i havent a clue on jetting ect... never had anything to do with it befor!!
cheers
nipps

[03 ORANGE SHEE]

i have the mods on one of my two 85 z's,but the one that has the mods uses a 86 trx 250r 34mm. carb,and i use a 48 pilot(stock) and a 175 main,sorry i cant help on an 86

[nipper]

thx. i have an 490 in it now so does an oily plug mean i need an smaller main jet or bigger main jet?
cheers
nipps

[nipper]

well to anyone thats interested the jetting turned out at about 350 in the end (drilled them myself as shop didn't have the right size!! (1.6mm drill bit lol)
cheers
nipps