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TDM 850, 91-93 (all with Mikuni BDST38 carb)
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Factory Pro's world renowned Carb Jetting Kits |
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Factory Pro's own ProShift kit |
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Factory Pro's world
renowned Nickel plated Emulsion Tubes |
 CRB-Y85-1.1-ti Ti ProKit $99.95 |
The internet's #1 choice.
This is "the" #1 jet kit choice of TDM riders.
Make float height setting easier! Pick up a Float Cage Holder for Mikuni 38mm carbs - Click here Note Hi, I had a Ti-Pro Kit installed on my TDM by xxxxxxx Motorsports in Rohnert Park recently. Much improved performance! Was wondering if you had stickers that I could put on my bike so I could proudly display this modification? Thanks, JB jb-el@sbcglobal.net Jan 28, 2005 |
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CRB-Y85-1.1-TNJ with 2 emulsion tubes |
The Ti carb kit - and.... includes 2 new emulsion tubes Factory Pro patented HDJ Style emulsion tubes (needle jets) for better than stock fuel droplet atomization! The Recommended Purchase. |
(also called emulsion tube) pn: CRZ-EMU-100120k $56 set of 2 See desc. |
Factory
Pro TRX 850, 96 and all other years with Mikuni carbs XTZ 750, all years with Mikuni carbs
Factory Pro manufactures stock replacement needle jets / emulsion
tubes) to better than original factory specs. The needle jet orifice
will wear
oblong in as little as 10,000 miles and is particularly aggravated by
"in town", low rpm operation. The result is excessive richness at low
rpm that can only be partially compensated for by lowering the fuel level. This the THE famous nickel plated Factory Pro replacement.
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Factory
Pro BMC Air filter FIB-YAM-16907 $59.95
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Increase airflow over stock and if any air filter could really last 1,000,000 miles, these quality, cleanable filters would be right there! |
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Ignition Advance
Kit NA |
Not available for the TDM, TRX series. The ignition trigger coil is triggered by holes milled into the crankshaft and not easily modifiable. |
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Trans Detent Arm Kit 2. |
Want your 30,000km bike to shift better than it did when it was new? Put your gearbox on a diet.? No - you can't loose unsightly gear weight, but you CAN snappen up the somewhat lazy TDM gearbox with the new Pro Shift Kit. Look at it this way - your foot "initiates the shift" and the shift mechanism completes the shift. The Pro Shift kit improves the shift mechanism's function and takes away the clunk between the gears when riding and virtually eliminates missed shifts. It's even easier to move the lever and the minimum amount of lever travel required to make a shift is decreased. Installation requires clutch basket removal - no case splitting required. Perfect to do when replacing clutch plates. Suggested that an air or electric impact wrench be used (for the large clutch basket nut) This kit does not include a TDM clutch cover gasket You will need to supply your own. The instructions are for an fzr1000, which has the same shift mechanism as the TDM / TRX / XTZ.
Makes shifting MUCH quicker and virtually eliminate missed shifts. This
is exactly the same spring kit that USA's Yamaha Racing used
"back in the day" in the 750. |
Tool page
TL-float height gauge |
The best tool to accurately
measure float heights. Works on nearly every carburetor. Required to set the 38mm Mikuni carb sets. |
Info about the"
"Slide Step / Notch / Ledge"
The 1/3 width step, built into the slide, where the
needle sits, is designed to lessen the "rattling" that the needle does in the needle
jet (you, know.... the hole that eventually wears out in every carburetor
with a slide and causes the bike to run rich over time).
It tries to keep the needle leaning up against one side of the hole , instead of
letting it rattle and beat both sides of the orifice oval.....
That step is in most Yamaha Mikuni carbs for the last decade or two -
The needle jet still wears, but at a slightly slower rate.
Factory Pro makes a tougher than stock, nickel plated stock type replacement needle
jet (commonly called an "emulsion tube"). It's easy to replace and if you can do
a "jet kit", you can replace the "tubes".
See above to buy a new set!
Fuel level, importance of..
Emulsion tubes / needle jets, Mikuni, worn, cause of low rpm richness.
Links
| TDM Gallery | |||
 TRX streetfighter from steve stuttard ohlins rear shock, r1 forks and brakes r1 rear bodywork and factory pro carb bits 2009 Feb 27 |
 TRX850 Mick White of API Impreza in UK 06 12 06 |
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 Dennis Tasmania Australia
Hi Marc, I recently bought the CRB-Y85-1.1-TNJ carbie
kit off you for my Yamaha TRX850. After putting a lot of
time into getting the correct float heights and also
needle clip position the bike is going the best it ever
has since I bought it ( had to pull the carbies off
three times! ). The black sludge that was in the
mufflers has gone and is now running clean.Went for a
ride up into the mountains on Sunday,great ride with
plenty of power over the whole rev range.
Thanks, Dennis Tasmania Australia
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 Darcy Murphine, San Diego, CA June 2006 |
 Darcy Murphine, San Diego, CA June 2006 |
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Have a picture or two of your TDM? Send us a copy,
your name and city and we might get it up in the gallery! |
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| Float Height Setting Trick for 38mm "Mik's" | |
| One of the problems with setting
the float height on the 38mm downdraft Mikuni's that come on Ducati's,
yzf 750's, tdm 850's and fzr1000's, is that the golldern white plastic
"float cage" keeps popping out of the carb body unless you hold it in. When you hold it in with your fingers, you always flex the cage frame and distort the reading that you are setting the float height at..... Aaarrggghhh!! :-) After spending 45 minutes setting some yzf750 carbs in the sweltering Mid Ohio heat of summer (there's a funny egocentric dynojet story to tell, here, btw), I decided to make a float cage holder and sell 'em! I'd make a million $$!! |
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| When I got back to work, I
set up and made a pile of cute little flat braces. As I was sitting there, admiring my cleverness...... one of my parts guys wandered by and asked what was I making? I showed him that you could just take my clever little piece of aluminum and hold those float cages right tightly up into their seated position - so you could get consistent float height readings. |
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| He says..... It looks like you could just put the float bowl on with the front holes on the bowl lined up with the rear holes on the carb body and slap some screws in and it would do the same thing........... |
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| I bought him lunch with the
million $$ I didn't make....
Marc |
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Hello. Here’s the pics you asked for! Thanks for the help, the bike runs BEAUTIFULLY now, lots more power! The front end now comes up on the throttle – whereas it didn’t before! There’s another pic in there too where I used a bar code to measure the bowls. I found this a lot easier than using a ruler. I measured the bar next to the number “8” on my barcode to be the recommended height on my bike – 14mm. -Mike Beary
Thanks Mike, for the pics! |
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LINKS People ask me how I select the below links - as they aren't all mc related. The below links are people and companies that are consistently impressive with their continual uniqueness and dedication to providing traditionally valued, quality products and services. Marc |
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EFI and Carb Tuning by Wheelsmith Racing | ||||||
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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! |
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Factory Pro Spring 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 spring and get a free souvenir t shirt! 707 938 2444 |
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| 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. |
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Maybe in next rewrite, he'll fix the ignition timing and dyno chapters... Otherwise great book with great starting ideas. |
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My bible |
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The little blue bible for quick references and little known facts. |
