Triumphrat

jm06bonnie

just wondering why I read that some bikes are running such big jets with the same mods as I have done. I have an 06 bonnie black AI gone and Staintunes. Thats it. I run 112 mains stock pilot. This is what the specs from the dynojet kit state with these mods. Bike runs well. Very rarely will I get a pop from the exhaust on decel. Any feedback would be appreciated. Wondering if I should bump up in jet size? Just a thought. Thanks.

webonnielad

Dyno have their own standard for jet sizes.
The sizes you read about hear are for the standard Khien jets.
Jet sizes are not universally standard between carburettor manufacturers.

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790cc 2003 T100 Bonneville. 18T Front Sprocket, AI Removed, 125 Mains, 40 Pilots, Thruxton Needles, 1 Shim,3mm Air Hole, Mixture screws 3 1/4 turns out left carb, 3 turns out right carb, Unifilter, NH Belmouth, NH Classic Togas with no mutes inserted, Stock Ignitor Unit. Hagon 320mm rear shocks & progressive fork springs. Last measured. 61.60 hp, , Max torque 48.40 in 5th gear at the rear wheel at 7200 rpm, 105 mph in 5th at 6500 rpm.

Gohm

yep, and many people also tend to overjet

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dkreidel

This seems reasonable given the nearly stock condition of your bike - see my signature below - I had 125's in mine, but today's dyno runs suggested I was a bit fat - hence the 122s.

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3 T120 Bonneville's: 2 '66s; 1 '68 =>mine since new
07 T100 tang/wht in SoCal-Togas, NH bellmouth, K&N filter, 19 tooth, gaiters, Hagons, 122 main/42 pilot
07 T100 tang/wht in Montana- similar to Cali bike, but 118 jets due to altitude

road_dog

In general... the less you restrict the flow of air, the bigger the jets required. See page 10 of Jenks Tuning Notes.

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Phil (road dog)

jm06bonnie

thanks everybody for the input. everyone is very helpful on this site. I always seem to learn something new when I'm here.