Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > BMW Tech
LEADED FUEL ON A R1200GS LEADED FUEL ON A R1200GS
Register FAQ Calendar Today's Posts
BMW Tech BMW Tech Forum - For Questions specific and of interest to BMW riders only.
Photo by Hendi Kaf, in Cambodia

I haven't been everywhere...
but it's on my list!


Photo by Hendi Kaf,
in Cambodia



Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 5 Sep 2005
Registered Users
New on the HUBB
  
Join Date: Jun 2005
Location: UK
Posts: 8
LEADED FUEL ON A R1200GS
IF I CHANGE THE STANDARD EXHAUST AND PUT A AKPOVIC SYSTEM ON IS THERE ANY CHANCE I CAN USE LEADED FUEL IF I HAVE NO OTHER CHOICE OF FUEL (NO UNLEADED AVALIABLE) THE CAT WILL BE OUT OF THE SYSTEM SO THAT WONT CAUSE A PROBLEM BUT IS THERE ANY THING ELSE I MUST WORRY ABOUT
Reply With Quote
  #2  
Old 6 Sep 2005
Tim Cullis's Avatar
Super Moderator
Veteran HUBBer
  
Join Date: Dec 2004
Location: London and Granada Altiplano
Posts: 3,124
Looks like you are OK. Here's a discussion link: http://www.bmw-motorrad.co.za/lifest...play.asp?Id=37

Tim
__________________
"For sheer delight there is nothing like altitude; it gives one the thrill of adventure
and enlarges the world in which you live," Irving Mather (1892-1966)
Reply With Quote
  #3  
Old 6 Sep 2005
Registered Users
Veteran HUBBer
  
Join Date: Sep 2003
Location: Estonia
Posts: 787
Just came from Iran, where's mostly leaded fuel (on some bigger cities you may get the "super" option=unleaded, but quite rare) i have R1100GS with Cathalythic converter and Lambda (O2) sensor.

Some people say Lambda sensor will be poisoned by leaded fuel very quickly, also the cathalythic converter will die.

But after riding thousands of kilometres in Iran with a friend having R1200GS with Lamda and Cat bot too, i say you'll have no problems. Bikes work fine, just a bit more valve noise on low rpms (poor quality fuel and low octan), a bit more fuel consumption and i first time experienced this so called BMW boxer's "surging effect" on some around 3000 revs when accelerating on cold engine in the morning, but in very minor way. I think surging is because Lamda sensor is poisoned but lamda sensor is only for making engine perfectly smooth on all conditions and revs, if lambda is not working, then engine still works OK, just few more "quirks" on some situations (as mine surges when engine is cold).

So don't worry, you'll be OK in eighter case - wether it's stock exhaust or aftermarket without Cat!

Cheers, Margus
Reply With Quote
  #4  
Old 6 Sep 2005
Contributing Member
Veteran HUBBer
  
Join Date: Jul 2002
Location: Sydney, NSW, Australia
Posts: 1,362
Once the lambda sensor is poisoned the system goes to a default map. This may increase the fuel consumption.

Replacing the lambda sensor (say $100 for a nonbm part) will get you back to 'normal'.

Removing the lambda sensor before you poison the sensor will save you $100 and still give you the default map. A plain bolt can be used to fill in the hole left behind.

Your choice.
__________________
---
Regards Frank Warner
motorcycles BMW R80 G/S 1981, BMW K11LT 1993, BMW K75 G/S
Reply With Quote
  #5  
Old 6 Sep 2005
Contributing Member
Veteran HUBBer
  
Join Date: Jul 2002
Location: Sydney, NSW, Australia
Posts: 1,362
Errr on the R12 I think you will find there are two lamdba sensors - one for each cyclinder ... so total costs would be doubled.
__________________
---
Regards Frank Warner
motorcycles BMW R80 G/S 1981, BMW K11LT 1993, BMW K75 G/S
Reply With Quote
  #6  
Old 6 Sep 2005
Registered Users
New on the HUBB
  
Join Date: Jun 2005
Location: UK
Posts: 8
SO WHAT YOU SAYING IS REMOVE THE SENCOR FROM THE BEGINNING BEFORE FITTING A NEW PIPE AND I WONT HAVE A PROBLEM SO DO I DISCONNECT THE SENSOR FROM THE ENGINE OR LEAVE IT CONNECTED AND SECURE IT TO THE BIKE AND THE LOW DOWN ENGINE NOISE IS THAT NOT THE VALVE SEATS BEEN EATEN AWAY
Reply With Quote
Reply

« Previous Thread | Next Thread »

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
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
 

Announcements

Thinking about traveling? Not sure about the whole thing? Watch the HU Achievable Dream Video Trailers and then get ALL the information you need to get inspired and learn how to travel anywhere in the world!

Have YOU ever wondered who has ridden around the world? We did too - and now here's the list of Circumnavigators!
Check it out now, and add your information if we didn't find you.

Next HU Eventscalendar

25 years of HU Events
Be sure to join us for this huge milestone!

ALL Dates subject to change.

2025 Confirmed Events:

Virginia: April 24-27
Queensland is back! May 2-5
Ecuador June 13-15
Germany Summer: May 29-June 1
CanWest: July 10-13
Switzerland: Date TBC
Ecuador: Date TBC
Romania: Date TBC
Austria: Sept. 11-14
California: September 18-21
France: September 19-21
Germany Autumn: Oct 30-Nov 2

Add yourself to the Updates List for each event!

Questions about an event? Ask here

See all event details

 
World's most listened to Adventure Motorbike Show!
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...

Adventurous Bikers – We've got all your Hygiene & Protection needs SORTED! Powdered Hair & Body Wash, Moisturising Cream Insect Repellent, and Moisturising Cream Sunscreen SPF50. ESSENTIAL | CONVENIENT | FUNCTIONAL.

2020 Edition of Chris Scott's Adventure Motorcycling Handbook.

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.

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!



Five books by Graham Field!

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!

Your ad could be here, on EVERY page of the HUBB, or the whole website, or as many as you like!

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.

Susan and Grant Johnson 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.



All times are GMT +1. The time now is 00:26.

Contact Us - Horizons Unlimited Motorcycle Travellers Website - Archive - Privacy Statement - Top