Ok I know those two things don't normally get mentioned in the same sentence but I am in need of some help so here goes........

First I am going to remove the airbox lid completely as the sound doesn't bother me I rather like loud things hence the wife.... Anyways I am ordering a dynojet 2152 to do the jetting of the carb unless someone reccomends a different kit perhaps one with main jets..... Anyways what size needle would you go with for stock exhaust and open airbox?

Second I have the S model with 21" front and 18" rear wheels and I am wanting to mortard this thing and am thinking of running avon distanzia's 90/90-21 front and 120/80-18 rear until I get a set of 17" wheels, anyways my question is will I have more grip on the streets with the avons will it be better in the corners with those tires vs stockers?

 

You may have your terms screwed up. There is only 1 needle... you mean what size jet. I didnt buy a dynojet kit so im no good there. i bought kawaski jets.

If you want to do more street the avons will be way better on the street.

 

I am going to borrow this thread while you have it started

Just to open the discussion up on other DS tires for the bike as options.

For now the bike will see limited dirt. Dirt roads but not trails really. I want to maximize road grip, comfort and MPG. The OP's choice look interesting. Never a true AVON fan so what other tires would be considered for the application. Sizes as well.

 

Kenda 761 was a decent tire... i think they make it in KLX sizes.


Im running the kenda 270 on my KLR right now. Great tire, even for mild off roading.

 

I brought Kawasaki #138 main jet, #40 pilot & N1TC needle. The clip set on first groove. I originally set on third groove for starters but it was too rich. My mileage decreased from 140km per tank (pre-reserve) to 120km.

After two tankfuls of petrol/gas, I have just gone back to the stock needle but installed two shims under the needle (part # 922022-1003) to richen up slightly. The stock needle (N1RX) is noticably thicker than the N1TC so hopefully I claw back some fuel economy. Stock jets for Australian bikes are #132 main & #35 pilot.

Before filling up tonight, I gave it a bit of hurt & there was no pinging which is the reason why I rejetted. Even prior to installing a TBR slip-on exhaust, the engine would ping under full throttle.

One footnote; my speedo/odometer was reading 10% fast so I installed a Speedo Healer. Prior to this my pre-reserve mileage was 150km - 160km.

 

Im running the 351 kit and i have the 38 pilot in, 40 pilot is way too big for 250, as i had tried that too. I would recommend putting the stock pilot back in.

 

I found this Kawasaki Australia service bulletin that explains to dealers the procedure for removing the ADR (Aust Design Rule) slide to derestrict the engine. Aust bikes run higher ignition advance (10 deg more >5000 r/min) so I guess they can run a bit richer to prevent pinging/detonation.

 

Ok, all i know is the #40 kawi pilot jet was way too rich for my bike as a 250. You could try the #38. If you really are gettin poor economy.

 

I would go with the DynoJet kit for one main reason... support! I live at a higher alitiude than most people ever even visit, so I emailed DynoJet for advice. They replied in a day with a custom setup just for me (4,700-10,000 feet above sea level). I installed per their instructions, and it seems to be spot-on!

As for tires... I don't know...

P.S. I hope you heal up quickly. (I assume you MUST have hit your head on something, since you want to motard your S.)

 

K671 is what i'm running on my bike while i transform it to a sumo -






Hey now... easy there.