08Honda400EX
07-04-2011, 03:45 PM
I just ordered some new keihin jets. I hear that quads come stock a little lean, which for me is a #148 main jet, so I bought a #152. I also ordered a #42 pilot jet, which I hear will ease cold starts and make it where you don't even need the choke (which I have considered removing for better airflow but that's another day). Stock pilot jet was a #38. Am I on the right track? Also keep in mind I've never even taken apart a carb before so I could use some tips and advice.
One last thing. I ordered a 13 tooth front sprocket. Stock gearing is 14/39 on 20" tires. I know this will improve low end grunt at the loss of high end speed. I figure this would be better for trail riding, but I want to know if it will also make slow riding easier, like when riding with my wife on her 250 utility? Also I know it's reccommended but must I change both sprockets and the chain at the same time or is it ok to swap just the front sprocket? Not sure how hard this install is either, I figure I'll have to remove the chain but not sure how?
One last thing. I ordered a 13 tooth front sprocket. Stock gearing is 14/39 on 20" tires. I know this will improve low end grunt at the loss of high end speed. I figure this would be better for trail riding, but I want to know if it will also make slow riding easier, like when riding with my wife on her 250 utility? Also I know it's reccommended but must I change both sprockets and the chain at the same time or is it ok to swap just the front sprocket? Not sure how hard this install is either, I figure I'll have to remove the chain but not sure how?