The crf 450 carb recal kit was designed with as much care and
attention to detail as we give to our EC997 dynamometer and test
routines, our Shift STAR shift improvement kits, our Billet Engine Covers
and all of the other products that the quickest road racers in the USA
and World used to collect a total of 9 WERA and F-USA national Championships -
along with the Suzuki Cup World Champion, Rob Jensen.
We've now entered
the off-road arena to bring some new, exciting, well proven concepts, such as our
easily tuneable "HDJ" style jet kits and several other things that we've picked up along
the way.
One of the improvements was
EC997 dyne systems design
and test routine design - We have been saying for
years that inertia dynos were misleading and now, these new "HDJ" carb
kits show how much better the
EC997
load dynos are than
inertia dynos when it comes to developing any performance products.
Sounds a bit egotistical? Perhaps it sounds that way - but, I think that
we've got quite a few local Norcal racers that we've done fine tuning
work for that would agree with us.
We really aren't egotists - We are just passionate about fine
tuning.
The Factory Pro HDJ kits, designed by Marc Salvisberg, will run more
evenly over a wider temperature and altitude range than any other carb
kit and will produce 3% to 8% better power than another carb with the
"best main jet" in it, when properly tuned and tested under a real load.
This does not mean an inertia dyno - though, power will be better with a
dealership level dyno, also.
So - Here's the power - Buy it!
Thanks!
800 869-0497
Call:
Ty Davis / Zip Tie Racing / CA 1-760-244-7028
Tony at Naumes Oregon Motorsports / Oregon 1 541 282 8027
Ed or Micah at AF-1 Racing / Texas 1 877-626-3966
Billy Weiss at WRW / Texas 1 281 304-6767
Other performance goodies
Billet Clutch Cover
Awesome Billet Clutch Cover!!!! Like
our WR / YZF, DR and KLX Covers - Virtually Indestructible!
Designed and manufactured by the same people who make the toughest
roadracing engine covers in the world - They stay together and laugh off
140mph lowsides!!
Machined from a solid block of incredibly strong, fine grain,
extruded aluminum alloy in northern California on the latest in high
performance CNC machining centers.
Offroad and comp tested every weekend (and sometimes during the week!) -
crashed by the best of us and still looks like a million bucks.
Make your friends slow down to check out your SWEET "billet" cover!
Unlike the stock, cast aluminum cover - the Factory Pro cover
almost prevents the brake pedal from punching a hole - You'll make it home!!
and it looks bitchin'
Ignition Timing Kit
in progress
RTR-HON-73-xx
also: -2, +2 and +6 degrees
~$49.95 USD
Tech Tips
Factory
Pro's
patented HDJ MAJ installation for crf / wr / yfz
Keihin FCR carbs
Where's my main air jet and what do I do with that
drill bit and tap that came in my Factory Pro HDJ kit for my Keihin
FCR carb?
First step is to eliminate the fixed main
air jet restriction.
It's about 40mm down the MAJ hole (left picture).
Set your 3mm drill so that it has 45mm to 46mm of drill bit exposed
from your drill chuck.
(see right picture)
Remove the stock emulsion tube (that's what the main jet
screws into) so that you can clean out the carb well. By only having
45mm to 46mm of the drill bit exposed, it prevents you from drilling
too far.
Then, use the supplied tap from our HDJ carb kit, thread the
Main Air Jet (aka "MAJ") hole.
You only need to go far enough to be able to thread in the new
replaceable jet that we supply.
Clean the hole, of course.
After it's clean, complete the MAJ Modification by installing
the supplied Main Air Jet and installing the new Factory Pro HDJ
Emulsion Tube.
NOTE!!!
If you aren't confident in your ability or in your understanding of
what you are trying to accomplish - no worry - Call us up or talk to
someone locally who has more experience in these matters.
If you are still not sure, see if there's a
Factory Pro Tuning Center
locally or visit your favorite local dealership or shop and get some
help there -
We all have to learn, and "usually", having an experienced person
around makes everything "easy".
This modification is something similar to what we've done in
many different carb types over the years, though it might be new to
some who haven't used our "1.7-RK" carb kits before.
Available direct from:
To adjust float
height: Sooo....
You read the
carb kit instructions and they specify a 15mm float height.
Float height? What's a float height? 15mm? How much is
that in inches? (it's .590")
Does that mean
I must do it???
YES!
Gee whiz!
What do I measure with??
You can use a
set of vernier calipers, if you have them - they are great
for measuring all sorts of things, but you can make it even
easier with our...
Float Level
Setting Gauge
Measures from
0mm to more than you will ever need!
Easier to use than vernier calipers on carbs. The vertical
legs adjust in width and the thin post slides up and down so
you can slide the post to the required clearly marked float
height measurement.
Remove float bowl screws.
Factory Pro gives you replacement allen screws in most carb
kits to replace usual phillips screws.
Slide the lower movable leg
so that both legs will rest on what would be called the
gasket surface of the carb body (if there was a gasket,
anyway)
Tilt the carbs
so that the floats just flop over towards and into the carb
body.
Tilt just
enough to touch and close the float the float valve, but...
Do NOT
compress the float valve spring when measuring (only
exception is 95-97 zx6r)
Test adjust the "L"
horizontal arm in the usual 1mm increments and test fit the
guage to see what the float is set at now. (or not).
(If we say 15mm and you
measure 4mm less than that - you might be compressing the
little float valve spring.)
At this time, you can set the
Float Height Guage to what you want to reset the floats to.
If you are tuning, you'd usually use 1mm increments
CV Carbs: Too
RICH at full throttle / low rpm (that's the
most common in CV carbs) Slide carbs (FCR's) - Float height controls 25%
throttle at ALL rpms.
If the float height
is too low (small float height measurement), bend the tab
slightly to increase the height
measurement. It's a 5:1 movement ratio.
CV: If the float sticks out further, down, into
the float bowl, the carb will deliver less fuel (leaner),
especially at low rpms and at cruise. Slide carbs: Float height controls 25% throttle at
all rpm's, even at redline.
You'd generally change the float height in 1mm increments
when tuning.
It will affect the topend slightly. Maybe
1.5mm leaner float height would require 1 size larger main
jet to keep equal main jet fuel delivery.
CV Carbs: Too
LEAN at full throttle / low rpm (not too
common in CV carbs) Slide carbs (FCR's) - Float height controls 25%
throttle at ALL rpms.
If the float height
is too LARGE, bend the tab slightly
OUT to decrease the height measurement.
If the float sticks out further, UP, into
the carb body, the carb will deliver MORE fuel (richer),
especially at CV low rpms and at cruise.
It will affect the topend slightly. Maybe 1.5mm richer
float height would require 1 size smaller main jet to
keep equal main jet fuel delivery.
You'd generally change the float height in 1mm increments
when tuning.
When you are done,
a multi-cylinder must be all within .5mm (1/2mm) or .020"
range of each other.
Nifty baffle plates in the 05
KLX300!
This carb type has been
around since the early 80's! It's had some updates over the
years. It's similar to the Ninja 900'a and ex250 styles.
A view from the engine side,
butterfly open.
Why adjust the float
height?
Changing the float height
changes the level of the fuel in the float bowl. The fuel height adjusts
the full throttle, 2k-3k rpm and part throttle cruise, as in cruising
around town, trying to be quiet... To give a scale of change, if the
bike runs well when cold, but gets a bit sloppy when fully warmed up,
lower the fuel level 1mm (i.e. go from 15mm to 16mm float height -
remember the float measurement is "backwards").
When do I adjust the float
height?
When installing a
Carb Recalibration Kit tm.
When rebuilding carbs.
To adjust low rpm / part throttle operation that isn't pilot jet, fuel
screw or needle height related.
When a bike starts running rich at low rpm after a mishap or
After an overwhelming gravity equalization process occurs.
How much is the nifty Float Valve Measuring Tool?How much is that nifty Float Valve Measuring Tool?
About $49.95, direct from Factory Pro
415 491-5920 voice
415 492-8803 fax
(for larger view, use your browser "view image".
This is a picture of a set of
38mm Mikuni CV carbs as supplied on the:
Note: Doing 38mm Mikuni downdrafts?
Get the nifty float cage holder to make your life easy! Click here
Note:
Measure the "rectangular", taller float (not the lower, "diamond /
parallelogram" shaped one) There is ~3mm difference between the 2
different floats!
Remember to measure the float height - tilt the carbs till the floats
just barely flop over and close the float valve, but don't compress
the float valve spring!
Just In!!
(shipping Oct 20, 2008)
New and improved Teka SFI 2
with new TPS display and "MMT" Memory Module Tuner
Finally - Quick, easy, cost effective Suzuki
tuning with no expensive "add-on boxes"
Suzuki cruisers and sportbikes
Factory Pro
179 Paul Drive
San Rafael, CA 94903
USA
And most importantly
Restart back at the HOME page and click on the red box in the
top left to find the bike that you want parts for...
restart at HOME page
This Tuning Site has been visited by
people.
Factory Pro Fall
Special!
Book a sightseeing
flight over the Wine Country or a Kamikaze aerobatic flight or a biplane
flight over Infineon Raceway, the Golden Gate Bridge and the San
Francisco Bay for one or two during the months
of October and November and get a free souvenir t shirt!
(and ask about the P-40 restoration project!)
707 938 2444
Just say that you saw this on the Factory
Pro website!
Marc
Northern California's most
unforgettable flying experience. No experience required.
Open weekends!
Artisan Crafted Fine Cheeses – Since 1865
Specializing in Handmade Brie & Camembert
Marin French Cheese Co., also known as The Cheese
Factory and Rouge et Noir is not just the oldest cheese manufacturer
in the country, but a vacationers and day trippers destination as
well as a unique part of American History. Located north of San
Francisco, east of Napa County, west of Pt. Reyes and Olema and
south of Sonoma County, Marin French has produced hand crafted
Artisan soft ripened cheese since 1865. Rouge et Noir cheeses are
similar to French and European varieties but reflect the
characteristics of Northern California, producing it's own regional
style.
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.
Maybe in next rewrite, he'll fix the ignition timing and
dyno chapters...
Otherwise great book with great starting ideas.
My bible
The little blue bible for quick references and little known
facts.
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