New to dirt got a ktm 250 sx

[kadexl600r]

Im new the forum I mainly read others and waste time while im at work but I had a 1985 Honda xl600r that I traded a couple of days ago for a 02 ktm 250sx I have been riding for a while never been to a track just trails.

 

my questions are is there a really quiet exhaust system for it I just repacked the silencer on it  its a fmf power core 2 I think and it seems to be running rich and it smokes a lot!!!!  

also just rebuilt the top end on it with a wiesco its a tiny bit higher compression should I change the fuel up any today when I get home im going to try and tune the carb to get it running better

 

and one last one it seems like I have to give it ALOT of gas and ride the clutch to get it moving and its not at all like my xl where I could just use the clutch with no gas is there any modifications I can make to change this I don't know much about 2 strokes except that im never going back to 4

 

ps: no pictures yet but I will upload some later when I get home

[CPT_Milky]

I have a 2000 KTM 250 SX and i have the pro circuit platinum 2 pipe with the type 296 silencer and its not as loud as the stock exhaust that was on it when i bought it. as for the smoke i usual get white smoke when i first start it up but thats it so im not sure on that. What gas are you running in it right now? I know im cheap and do not get the racing fuel but run whatever the highest octane at the pump. I know the manual for my year says nothing less then 98 Shell. As far as using the gas and the clutch sounds like the carb needs to be adjusted. Whenever i rode and its does anything weird like that i could just make minor changes to the air screw and it fixes it.

[kadexl600r]

thanks I just run premium and 2 stroke oil premix and it smokes a lot on start up but not so much while riding but always smokes and its a steady stream of smoke white smoke

and I read on a different post that you can change the fly wheel weight do you know what that does

[CPT_Milky]

Too be completely honest not really. Also once i thought about it what premix ratio are you using?

[kadexl600r]

40:1 or 50:1 it was my buudies bike and I cant remember what its running now but it runs better on this one then the other one we tried both

[CPT_Milky]

I changed my bike to 52:1 and an iradium plug and that cleaned it up a lot.

[kadexl600r]

i will try that when i run out of gas lol its expensive

 

do you know how the power valve works and where the adjustments screw is?

[CPT_Milky]

LOL yes it is. Its on the right hand side next to the oil level screw i have never had to mess with when i bought my bike it was all tuned by Z-Racing out in California and i have not changed anything to require me to mess around with it.