Ness Big Sucker install on Sportster

[christopherchubby]

I am going to install an Arlen Ness stage 1 big sucker on my 2001 sportster. I currently have the screaming eagle stage 1 kit. Last year i had the 1200 kit installed and it was rejetted, will i need to rejet again or install and ride it and see?

 

[glider]

You'll probably be OK with that change. Here's a way to check it out.


Run the bike through the gears into third gear and run third up to 60-70 MPH full throttle, then chop the throttle about 1/8 to 1/4 back and see if the bike either surges ahead or stumbles then recovers.

If it surges ahead, your jetting is lean
If it stumbles and recovers , your jetting is rich
If it makes no difference, you're pretty close.