|
8 Oct 2007
|
HUBB regular
|
|
Join Date: Jan 2007
Location: Cape Town
Posts: 16
|
|
Running 640 on poor fuel
I'm doing a trip up west africa in December and have been told to expect very bad quality fuel.
What can i do to best prepare my 640 adventure for poor fuel? One guy told me we're likely to burn holes in the pistons????
luke
Fuel filter
Octane booster
|
8 Oct 2007
|
Registered Users
HUBB regular
|
|
Join Date: Nov 2002
Posts: 55
|
|
Don't worry about it
I wouldn't be too concerned. I did West & East Africa on 640 Adv and LC4 400 2002/3 and had no bad fuel issues. Try to fill up at the main brand stations (Shell, BP etc). I'd heard that smaller "uncle Joe's" corner stations often dilute their fuel to be able to sell more so I avaoided these.
I did fit a big(ish) inline fuel filter in between the fuel tap and fuel pump. As a precaution I took a small bottle of Octane booster to use if I heard the engine starting to ping because of low octane fuels ... I only used this once after filling up at a dodgy little station in Nigeria. If I knew that I would be pushing the fuel range I carried an extra 5 ltrs strapped to my pannier rack & topped up into my tank asap.
It's unlikely you'll find any unleaded fuel south of Morocco (at least that was the case 3 yrs ago) which over a long time can clog your catalytic converter. Still got my 640 and it still runs fine after running on leaded fuel for 9 mths.
|
8 Oct 2007
|
Registered Users
New on the HUBB
|
|
Join Date: Aug 2005
Location: London
Posts: 11
|
|
Poor Fuel
When you notice the pinging or think you have a batch of doggy petrol do the following.Open the cover on the right hand side of the bike (one opposite airfilter cover), you will notice a little plastic box with a load of electrical wires going into it (dont fiddle with it as this is your cdi unit).
When looking straight at it on the left hand side of the little plastic box(cdi) there should be male/female connection switch (The so called switchable cdi, well thats the switch). By undoing this connection you will change the compression setting of the bike. There will be loss of power and the bike will also sound a bit like a diesel motor, but the engine will be fine and capable of getting you where you need to be.
Also dont gun the engine when the pinging starts, thinking it will go away.
If the above is a bit to much, email me and i will send you the KTM notice with pictures for changing it.
I also second the inline fuel filter and also put lady stokings over your tank inlet to act as an extra filter when you stop at "Johnny No Names Petrol Station"
Happy Trails
GC
Last edited by gwc; 8 Oct 2007 at 20:12.
Reason: My English is Shite
|
8 Oct 2007
|
Registered Users
HUBB regular
|
|
Join Date: Apr 2006
Location: Frankfurt/Germany
Posts: 44
|
|
Quote:
Originally Posted by gwc
Hello
When you notice the pinging or think you have a batch of doggy petrol do the following.Open the cover on the right hand side of the bike (one opposite airfilter cover), you will notice a little plastic box with a load of electrical wires going into it (dont fiddle with it as this is your cdi unit).
On the left hand side of the little plastic box(cdi) there is a male/female connection switch (The so called switchable cdi, well thats the switch). By undoing this connection you will change the compression setting of the bike. There will be loss of power and the bike will also sound a bit like your dads diesel Izuzu bakkie, but the engine will be fine.
GC
|
o.k., good advice, but let's be more precise... The KTM Adventure 640 was only from 2003 onwards equipped with that CDI unit with the 2 different Octane curves... If your model was built after 2003, then you can follow that advice. If not, do not touch the CDI.
You will need a new CDI to upgrade your model to use the 2 curves.
If you do not do this, then you then have only 2 ways of improving the ignition process:
1. Add an octane booster
2. Slightly loosen your generator srews and move it to the left (as the screws allow) This will give you a little earlier ignition and eliminate most of the "klonck".
Although I did both, the 70 octane gas in Bolivia killed my piston while I had over 2500 km with that bad gas then later in Chile. Thats life.
So plan your trip carefully and look for branded fuel.
Cheers
Ras
|
9 Oct 2007
|
HUBB regular
|
|
Join Date: Jan 2007
Location: Cape Town
Posts: 16
|
|
Great Advice
Thanks guys for the brilliant advice.
|
9 Oct 2007
|
Registered Users
Veteran HUBBer
|
|
Join Date: Sep 2002
Location: Tomahawk,Wisconsin
Posts: 223
|
|
Luke,
Ran 80 in Mongolia and although I have the dual curve ignition I never changed it.
The bike ran fine and I never heard detonation.
In fact I often run regular gas or mid range. I goes fine.
I had the head off due to a head gasket failure and saw no signs of lean running or detonation despite the gas and stock jetting with the competition pipe. I removed the snorkel and enlarged the hole.
My bike runs great with the stock BST carb.
b.
Last edited by Bill Shockley; 10 Oct 2007 at 10:34.
|
10 Oct 2007
|
Registered Users
Veteran HUBBer
|
|
Join Date: Nov 2006
Location: NorthVancouver Island
Posts: 137
|
|
I would think that changing the timing so the engine fires earlier would add to the detonation problem.... Retarding the ignition should reduce stress and cylinder pressure.....
|
10 Oct 2007
|
|
I added a 2003 CDI to my 2002 640 and placed a switch on the dash so I could switch between high and low octane fuel.
I ran it on 80 octane with no problems, but big throttle openings on 76 octane fuel would make it ping.
with the CDI on the high octane setting the lowest fuel I could run without inducing pinging was 92 octane.
Petrol/gas does vary from place to place. My Honda transalp seems to run on anything down to 85 octane without any problems, apart from loss of power.
The KTM part number for the CDI box was.. 58439031300 I think it cost around 200 euros.
Steve
|
27 Nov 2007
|
Registered Users
HUBB regular
|
|
Join Date: Jul 2005
Location: London,UK
Posts: 40
|
|
Hi luke
Me and 2 other friends is currently in burkina faso,we are doing west africa the opposite way
stqrted in london and coming down to SA
ons kom almal huistoe na n paar jaar in london
We are all riding with 640 adventure and have not had any problems with bad fuel sofar.
we can keep in contact and we should pass each other along the way,we are planning to be in sa end of january,gabon during christmas.
anything else,just give a shout
|
Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
Check the RAW segments; Grant, your HU host is on every month!
Episodes below to listen to while you, err, pretend to do something or other...
2020 Edition of Chris Scott's Adventure Motorcycling Handbook.
"Ultimate global guide for red-blooded bikers planning overseas exploration. Covers choice & preparation of best bike, shipping overseas, baggage design, riding techniques, travel health, visas, documentation, safety and useful addresses." Recommended. (Grant)
Ripcord Rescue Travel Insurance™ combines into a single integrated program the best evacuation and rescue with the premier travel insurance coverages designed for adventurers.
Led by special operations veterans, Stanford Medicine affiliated physicians, paramedics and other travel experts, Ripcord is perfect for adventure seekers, climbers, skiers, sports enthusiasts, hunters, international travelers, humanitarian efforts, expeditions and more.
Ripcord travel protection is now available for ALL nationalities, and travel is covered on motorcycles of all sizes!
What others say about HU...
"This site is the BIBLE for international bike travelers." Greg, Australia
"Thank you! The web site, The travels, The insight, The inspiration, Everything, just thanks." Colin, UK
"My friend and I are planning a trip from Singapore to England... We found (the HU) site invaluable as an aid to planning and have based a lot of our purchases (bikes, riding gear, etc.) on what we have learned from this site." Phil, Australia
"I for one always had an adventurous spirit, but you and Susan lit the fire for my trip and I'll be forever grateful for what you two do to inspire others to just do it." Brent, USA
"Your website is a mecca of valuable information and the (video) series is informative, entertaining, and inspiring!" Jennifer, Canada
"Your worldwide organisation and events are the Go To places to for all serious touring and aspiring touring bikers." Trevor, South Africa
"This is the answer to all my questions." Haydn, Australia
"Keep going the excellent work you are doing for Horizons Unlimited - I love it!" Thomas, Germany
Lots more comments here!
Diaries of a compulsive traveller
by Graham Field
Book, eBook, Audiobook
"A compelling, honest, inspiring and entertaining writing style with a built-in feel-good factor" Get them NOW from the authors' website and Amazon.com, Amazon.ca, Amazon.co.uk.
Back Road Map Books and Backroad GPS Maps for all of Canada - a must have!
New to Horizons Unlimited?
New to motorcycle travelling? New to the HU site? Confused? Too many options? It's really very simple - just 4 easy steps!
Horizons Unlimited was founded in 1997 by Grant and Susan Johnson following their journey around the world on a BMW R80G/S.
Read more about Grant & Susan's story
Membership - help keep us going!
Horizons Unlimited is not a big multi-national company, just two people who love motorcycle travel and have grown what started as a hobby in 1997 into a full time job (usually 8-10 hours per day and 7 days a week) and a labour of love. To keep it going and a roof over our heads, we run events all over the world with the help of volunteers; we sell inspirational and informative DVDs; we have a few selected advertisers; and we make a small amount from memberships.
You don't have to be a Member to come to an HU meeting, access the website, or ask questions on the HUBB. What you get for your membership contribution is our sincere gratitude, good karma and knowing that you're helping to keep the motorcycle travel dream alive. Contributing Members and Gold Members do get additional features on the HUBB. Here's a list of all the Member benefits on the HUBB.
|
|
|