I have a 98 scram 500. It is very slow. I raced a sportsman 500 and got beat. Then i rode a 2001 scram 500, and it runs so much better. I really notice a big difference off the line. Is the newer scram just faster than the 98? Mine is a high output too.
I even tried the hsp 500 performance kit. It came with the clutch kit, 160 main jet, pipe, baffle, and k&n filter.
What should i try? The plug is black, so it running rich right? But it was like that before the mods too.
Any ideas?

 

no dude its running slow because the plug is black get a new one and you'll see some inprovement

 

might be some problems with your choke linkage

 

I believe the problem lies with you believing you have an HO... it wasnt available then...(i might be wrong... but i dont remember HO's in 98)... however, with the 140-170 lbs diff between a sp and a scrammy you should be able to kick *** on the sp at least in certain areas... is rider weight an issue?.. change quads and try again. if the SP still kicks ya,... it's time to figger out what's wrong.

 

Actually '98 was the first year for the H.O. in the scram. The only one that did not get the H.O. was the '97 model which also did not have concentric drive or shaft drive in the front. Polaris realized that the 400 scram was whooping the non H.O. 500 scram that is when they put the H.O. motor in '98

 

This is just a thought, but how is the condition of your belt and clutches? That could definately make it take off liek crap.

 

I have a new belt and just installed a clutch kit. As far as weight on the sp. He is about 75lbs more than me. But he just pulled about 4 or 5 bikes instantly.
How can i lean it out?

 

change your spark plug!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!! because if its black its not a good thing trust me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

i changed it and its still slow off the line. Could it be something in the clucthing?

 

If you just put a clutch kit in then I would say it is wound wrong or need to try different spring position if it takes off too slow. Try a different setting on the secondary.