|Finger and screwdriver adjustable fuel mixture screw kit|
Long Boy Extended Fuel Screw
Factory "Pro Thunder" Carb Recal Kit
Easy to install and tune - NO slide drilling!
Factory Pro's Carb Recalibration
kit will add more low-end / midrange, if the proper main jet is selected,
more top-end power.
Excellent street manners and specifically
designed to improve fuel atomization without resorting to any flim flam
Some of the aftermarket jet kits actually decrease fuel atomization and that hurts power and mileage.
This kit is nothing like a "Thunderslide" dynojet kit - If you have one of those, getting a new stock slide and slide spring and installing the Factory Pro kit will bring back that smoothness, refinement and lowend power back into your $20,000 machine -
This kit includes Factory Pro "Ti" needle, 2 pilot jets and a large selection of main jets to cover both models.
All kit R&D was done on Factory
Pro's EC997 Dyne System
Tuning Tech Notes:
K&N air filter:
TL-float height gauge
Float Height Limintaions:
When trying to lean out the full throttle / low rpm area.
13mm is too low to use.
The pilot jet gets exposed
to air at high rpm / full throttle at 13mm.
There are other issues, but they are beyond the scope of most readers.
If you have an EC997 dyno, you can see what they are.
11mm works. 10mm works.
12mm "might" work - but if you experience misfire at high rpm / full throttle, the fuel level has dropped just a little bit too much and exposed the pilot jet.
The float bowl does NOT run out of fuel if the float height / fuel level is lowered - When the engine is pulling max fuel, the fuel level in the carb drops, usually, 1mm-2mm and then stabilizes.
If the float bowl were to actually "run out" of fuel - it would mean that ANY float height setting would eventually run out of fuel if you held the throttle on long enough.
The best way to test that is to use an EC997 dyno and do a LONG full throttle / high rpm test for 6-10 seconds (usual is 2-4 seconds) and watch the 4 gas EGA trace and see if it leans out or not.
Stock: 43 True hp, after pipe, Hypercharger and
dyno tuning at a Factory Pro Tuning Center = 56 True hp.
Big Boyz' HD Cam Specs and other HD related online calculators - click here
Big Boyz uses the Factory Pro EC997 dynamometer for highest quality tuning results!
EFI and Carb Tuning - Most all FI and carb tuning
by Wheelsmith Racing
Flight Training - train with AMA race winner Todd Harrington.
The Harringtons own American Flyers, one of the most established flight training facilities in the USA.
The Rich Oliver
Mystery School will help you discover your hidden inner strength.
It will challenge you. It will teach you a new way of thinking, and a new way of riding. You can take your riding to an exciting new level!
We use a variety of proven drills and training techniques.
Practicing these techniques with our Yamaha dirt track trainers will enhance your abilities both on the track or the street.
It doesn't matter what you ride or race, the Rich Oliver Mystery School improves everyone's skill level and mindset!
WW2 vintage flying Special
Book a sightseeing flight over the Wine Country
or a Kamikaze aerobatic flight or a biplane flight over famous
the Golden Gate Bridge and the San Francisco Bay for one or two during
the spring and get a free souvenir t shirt!
707 938 2444
The extension of the laboratory
for engines of the Swiss Federal Institute of Technology was completed
in about 1935. Its architect was Rudolf Otto Salvisberg (1882-1940).
He had a successful career in Berlin but returned to Switzerland after
the advent of the Nazis. His architectural style was somewhat similar
to that of Erich Mendelsohn. The staircase of the laboratory is in normal
use but well preserved.
Edited to the tunes of Chemical Residue by Herbie Hancock.