1984 250r help please I need this fast

[gaukel350x]

What is the stock jet size and I have a dg full system on it with a uni air filter and the air box lid has a couple of drilled holes on the lid what jet size should I use just please make a guess or if you really know

[rally4x4racer]

I think the stock is a 158 try jumping in 10's first then move in smaller numbers - go 165

[Wi200x]

an 84 with stock PE30 carb is going to have a 130 jet as stock. I haven't got a clue whether the pipe is gonig to require a rejet. From the info I can gather a lot of times the stock jet will work just fine. You don't want to run lean though as you can burn a piston like I did.