lean

[nightshee]

Hello guys new to this site. I needed help with my jetting i am in pa about 800 to 1000 ft above sea level and my bike runs pretty good it is a 99 .40 over, srp ram air cage with boyseen reeds,k&n with lid on with holes drilled in it and snorkel removed,it had fmf fatty pipes with 260 main jets on the middle clip position. The bike ran awesome with this set up I switched to rocket pipes and it still starts perfect and runs ok but since this is a more top end pipe it seems like it needs more fuel without doing a plug chop do u guys think I need 290 or 300 mains with the clip on the 2nd from top position and also should I remove the air box lid. The bike didnt seem to pick up any power with the change to rockets that is why I am concerned , also I am at 14/41 gearing and man I hardly ever get this thing in 6th gear and when I do it just seems like the motor has just enough pull to barely pull it I have 20 inch tires do u think a change to a 43 tooth sprocket would help this. Thanks guys for any help

[BaNsHeeJuNkEy]

Hello guys new to this site. I needed help with my jetting i am in pa about 800 to 1000 ft above sea level and my bike runs pretty good it is a 99 .40 over, srp ram air cage with boyseen reeds,k&n with lid on with holes drilled in it and snorkel removed,it had fmf fatty pipes with 260 main jets on the middle clip position. The bike ran awesome with this set up I switched to rocket pipes and it still starts perfect and runs ok but since this is a more top end pipe it seems like it needs more fuel without doing a plug chop do u guys think I need 290 or 300 mains with the clip on the 2nd from top position and also should I remove the air box lid. The bike didnt seem to pick up any power with the change to rockets that is why I am concerned , also I am at 14/41 gearing and man I hardly ever get this thing in 6th gear and when I do it just seems like the motor has just enough pull to barely pull it I have 20 inch tires do u think a change to a 43 tooth sprocket would help this. Thanks guys for any help

 

 

you do got to go bigger on the main but still need a plug chop or at least need to look at it realy good don't have to cut it. i would get rid of the lid if you know you wont be going to a water hole any time soon. also if you put a 43 in the back your taken aways from your top end and the bike wont go faster you will just slow it down. fix the jettign first then play with the gears. as far as your main i would try 280 for main maybe 285. but someone on here i am sure will post more to what i have told ya.

[nightshee]

I put the 300main jets in an man did it wake up alot on the top end plus I also removed the air box lid and I think that also help bigtime I am thinking about going to 320 mains do u guys think this will be ok. Also I love the pipes huge top end and big mid but is there anything I can do to help bottom I know these pipes arent suppose to have alot of bottom but could I gear down a little like 2 more teeth up in back to keep first or second shorter to hit power band sooner.

[lonestar]

I put the 300main jets in an man did it wake up alot on the top end plus I also removed the air box lid and I think that also help bigtime I am thinking about going to 320 mains do u guys think this will be ok. Also I love the pipes huge top end and big mid but is there anything I can do to help bottom I know these pipes arent suppose to have alot of bottom but could I gear down a little like 2 more teeth up in back to keep first or second shorter to hit power band sooner.

Don't be shy