Quote:

The America/Speedy headers are double walled, so the outer visible pipe shouldn't show bluing. Next time you look at a standard Bonnie notice the difference in size of the headers compared to your BA's. The Bonnie's head is the same as the BA's, but the headers are smaller OD and not double walled and will blue past the first curve.



So if mine are blue to orange down 8 to 9 inches the exhaust is too hot? And too lean? Is the only carb adjustment the idle mixture and re-jetting is needed if it runs too hot/lean?

Is it possible to check CO content in the exhaust (manual says 0.45 to 3.0% at idle) at anything besides idle or does my 04 have the catalyst mentioned in the manual that precludes CO check at the tailpipes? (My British Car Club has an exhaust analyzer I can use if it is possible to check)

And finally, the PO said this bike was cold natured, and sometimes it is and sometimes not. Would changing the mufflers have any effect on starting? Would the idle adjustment affect "cold" starting? Or is the 790 just cold natured as he said?

I bought the tubing to make a manometer to check carb sync and hope to have that done this week.

Phil in Northwest Arkansas 04 America, Black, Corbin seat, TORs, no AI, 34K