Entschuldigung, dass ich diese Nachricht auf Englisch schreibe: Ich bin Brite...
1988 PD06 Transalp carb jetting (Vergaserduese) for altitude?
Hi guys
This summer I’m riding my 88 Trannie in Central Asia. In places like Tajikistan/ Kyrgyzstan I could be up at 4000m above sea level. Has anyone ridden at altitude and adjusted/changed their carb jets (Vergaserduesen?)? Currently the bike has standard jetting as it came out of the factory. Would you replace the jets? If so, to which size?
Many thanks for any advice.
Best wishes,
Chris
http:www.thebrightstuff.com
Technik: 1988 PD06 Transalp carb jetting (Vergaserduese) for altitude?
- i think you should change the airsystem to get more oxygen into the fuel, not the carb jetting. try to remove the air filter for a test. but i think it will be very difficult to get the transalp running very well in such altitudes.
changing the charb jets will only save fuel. - Hi Chris,
I did Ethiopia on a 92 PD06. The bike was running quite poor at 3500-3800m a.s.l. with high fuel consumption.
Rejetting could help for sure. Try smaller main and idle jets. Sorry for not have the right values.
Be aware, that back on lower altitudes the bike can get too hot with the lean jetting.
The Transalp carbs (and Africa Twin as well) are on the richer side.
Cheers, Damian - Hi Man,
I have just been riding a 125ccm bike up to 4800 meters altitude in Bolivia. There the engine lost a lot of power so i could onely ride up to 30 km/h insted of 100 but the Transalp is much stronger and for a "short" distance i would not start fideling around with the carborator. It also needs adajustmend afterwards scince the transalp has two cylinders. Just take it slower there and enjoy the landscape. I met people on a Africatwin and they told me they did not feel the difference
The maximum i would do is screw the german "Leerlaufgemischregulierschraube" kompletly in. Normal its 2.5 windings out...this helps if you ride at low rpm.
http://www.adventure-travel-experience.de/index.php?report=honda_transalp
Greetings, Tobi - better than changing the jets is some part (sorry i don't know the englich name 'Blende ') with which you can change the inlet-diameter of your air-intake-system!
something like a second hole in your air-filter-box, wich you can open or close perhaps with a cable from the handlebars.....
The old german motorbikes of the 50ies, had something like this in their carbs, called 'TT-Carbs'
it was something like a little aluminium-piece, which you could lift or lower per cable, in your carburettor to reduce the diameter!
greetings - Hi guys
Many thanks for your detailed replies. I'm likely to ride the bike as it is and if necessary adjust the idle screw and allow it to get more air.
I'll let you know how I get on.
Best Wishes
Chris