Hey I was looking for some help I have an 87 LT250r bored .40
Should I change the jetting or leave it stock it seems to be
Smoking more than it did before the rebuild

Thanks I know it was smoking because of the rebuild from coating the piston and cylinder but I've been through about 3 or 4 tanks and its not as bad but still seems like more than it should

Plug looks fine and the smoking has died down a bit ill post another vid tomorrow I was looking at getting a v force reed cage and was wondering what the best ones are I heard a lot of people like the 2s and how about the rad valves?

Yeah found some 4s on ebay pretty cheap like 110 or something like that

Tudors and Hall still make the v2s for 87's. I made a few sets too. They just use cages off snomos, watercraft and some dirtbikes and quads. All you need is the plate to mount the cage to.

In my experience after putting aftermarket reeds on, like the dual layer cf/acrylic it seemed to make my 250R run rich. If you have the airbox lid off and aftermarket exhaust I'd start off with the air screw 1.5 turns out, 30 pilot, needle on 3rd clip and a 250 main jet.

Not sure what kind of carb you are running or what elevation you are at. I'd try and jet it on a 65 degree day, this way if you are riding in the upper 40's or lower 80's you should be good for temp fluctuations.

If it's too rich down low, put the air screw 1.75 turn out. If it's too rich in the middle put the needle on the 2nd clip. If it's too rich up top drop to a 240, 230 or even a 220 main.

If it's too lean down low, put the air screw 1.25 turns out. If it's too lean in the middle put the needle on the 4th clip. If it's too lean up top go up to a 260, 270 or 280 main.

I always ran AmSoil full synthetic 2 stroke oil at a 35:1 ratio.