triumph, 800, bonneville, adventurer, tuning, factory pro, carb tuning, eddy current dynamometer

Finger and screwdriver adjustable fuel mixture screw kit

Long Boy Extended Fuel Screw
$39.95 for 2
pn: 3518k2TD16
with new extended screws, springs, washers and o-rings

"Long Boy"
Finger and screwdriver adjustable extended Fuel Screw assembly

Frustrated with trying to find an "almost 90 degree" screwdriver to fine adjust your fuel screw for best idle and cruise?
Use Factory Pro's new "finger adjustable" fuel screw to adjust fuel screw for best throttle response. Traveling to high altitude? It's easy to lean out the lowend temporarily.

Make your life easier.

Installation:
Remove old short stock fuel screw, old o-ring, old washer and old spring. The o-ring might be stuck in the carb, so take a light and make sure it's really out (or you can't find it after you took out the screw)
Use a small bent wire to pull it out if it doesn't drop out. Keep the old parts for "spares".

Screw assembly kit comes with:
new extended screws
new springs
new washers
new o-rings

carburetor tuning kit

CRB-TD16-1.1-TI $99.95

36mm KEIHIN carbs

Config 10 jet kit
For when you run the stock airbox and stock or stock replacement air filter.

The 800cc Triumphs are wonderful, modern renditions of the early "unit" and "pre-unit" "Bonnies" and "America's" - always known as the best handling bikes in the 50's, 60's and 70's.
Smoother (!!) and more reliable bikes than the early golden days of motorcycling - a recommended bit of updated twin nostalgia -

Best (only?) "drop-in" kit available. Nice even power improvement.

Not really fussy about main jet selection (other than the bike loses 1 hp on either side of the perfect, best main jet). Needle height is pretty cut and dried, with little fiddling required, from what we've seen and heard.

Nice kit and easy to install - a genuine pleasure to work on a bike that was easy to tune.

As usual, boosts power a bit at full throttle, improves throttle response and wheelie ability. Definitely pulls harder out of 2nd and 3rd gear corners. Gets rid of that pesky flat spot at low rpm, when properly setup.

CRB-TD16-3.1-TI - $99.95
36mm KEIHIN carbs
for use with RC-2900 and RC-2890 filters

Oh my, oh my!
They call it "freak" when you remove the airbox??? Oh, well, "kids, these days!"

Config 30 jet kit
For when you remove the airbox and run individual K&N air filters.

Nice kit and easy to install - a genuine pleasure to work on a bike that was easy to tune!

As usual, removing the airbox boosts power at full throttle, improves throttle response and wheelie ability. Definitely pulls harder out of 2nd and 3rd gear corners. Gets rid of that pesky flat spot at low rpm, when properly setup.

Tech notes:
Fuel level controls carburetion richness at full throttle / 3000 rpm and below and at cruise.
Before you say "I don't give it full throttle at 3000 rpm", it also controls overall richness at cruise..... (aka... mileage.....). If your mileage is poor, you should probably try doing a full throttle roll-on from 2500 to 3000 rpm.
The bike should pull, cleanly from 2500 rpm or so, in at least in 3rd gear. The higher the gear, the more correct the mixture has to be.
Using an EC997 dyne System, as are at Factory Pro Tuning Centers, that would have been tested in the usual Step Test range.
CO% should be DEF. less than 6% and likely in the 4% to 5% range for that low of an rpm.
If the bike bucks and stumbles, it's probably too rich and you should lower the fuel level (adjust floats leaner) in 1mm increments to attain best full throttle / 3000 rpm operation.
Magically, your mileage will improve and you'll retain the best midrange acceleration.

General Technical Support

CV Carb Tuning Exposed
Marc Salvisberg

General Technical Support

CV Carb Tuning Exposed Marc Salvisberg

CV Carb Tuning Exposed
Marc Salvisberg