3x3 and jetting

I have an 05 DRZ SM...got the dynojet sm specific kit and I'm jetting it as burnd said to the specs for stage two.....it never says anything about the pilot jet...am I missing something or do I need to change it?

The FMF/DJ kit stage 2 instructions assume a standard pilot jet is used, so no need to change the PJ. It makes the mixture adjustment with the 3.5 turns on the fuel screw.

However, id you fit a bigger PJ, you can get away with less turns out on the fuel screw and so less chance of it shaking loose or dropping out.

alright thanks!!

Hey guys! I did the Jet Kit mod way back in the day when Dyno Jet kit was for the S specific model. I am still under the idea i should be using a larger MJ than my 142.5 with a 3x3 hole and full yoshi system. Should i go up to a 147 - 150 MJ ?? It feels just a little light on top? :thumbsup:

Thanks a lot

Richie

I've got a 155 main in my SM but I'm pretty sure that the SM kit needle is tapered way different from the S jet kit needle. I think you need both the needle and the bigger jet so it runs right through all the RPM's...not just the bottom or top.

you need both the needle and the bigger jet

Right. I believe the bigger jet takes advantage of the different needle taper. It's a waste to step up to one without the other.

Man, reading this, I think I'll go try some fuel screw tweakage....

So i guess i should swap out the old jet kit for the new or can I just buy the Needle and MJ? I have the 25PJ already installed. Is the SM kit better than the S? More power? :thumbsup: Thanks

Richie

you canuse the same needle.just bump the main jet up to a 150.

I was in the same boat as ucantstunt. I had the S jetkit in mine because thats all they had. I sold it to buy the sm jetkit and left the 25 pilot in and it runs a little better. Its just peace of mind.

burned~ U mean the Same needle i have now or use the same needle off of the SM specific kit and bump my jet to 150?

Thanks

I bought both kits. Bought the s kit first not knowing about the sm kit. The 'sm' needle is on the left and 's' needle is on the right:

needles.jpg

Notice the SM is fatter at the end, shorter, and the actual clip notches are lower. I found a marked improvement in the SM needle.

WGW

burned~ U mean the Same needle i have now or use the same needle off of the SM specific kit and bump my jet to 150?

Thanks

you can use the S needle.do use the bigger main jet.

the SM needle is different for sure,but the S needle works ok.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now