Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > BMW Tech
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 25 Jul 2003
Registered Users
HUBB regular
 
Join Date: Dec 2001
Posts: 71
cylinder head temperature- R80/R100 twins

what is the "normal" working temperature for the cylinder head on the old airhead twins ?
i appreciate this will vary with the ambient temperature of the surrounding air,
any ideas ?
thanks
Reply With Quote
  #2  
Old 25 Sep 2008
Registered Users
Veteran HUBBer
 
Join Date: Oct 2002
Location: Stockholm - Sweden
Posts: 317
A very good question!
And not even one reply since 2003 ?!

Has anyone used IR-heatgun(?) and measured the heads temp ?
The original question has no answer since BMW have not published any data on head temps.

References to VW heads ?

What optional coolings of the heads have you tested ?
CC-Racing or was it Luftmeister made valve-covers with o-ring sealing instead of the gasket => enhancing cooling of the heads they claimed (no temp data was published - was it only a sales gimmick?...). There is an R90W in EU - neat build! Still - what head temps could be considered normal ?
__________________
Drive Safely,
Albert

Last edited by dc lindberg; 29 Mar 2009 at 10:41. Reason: watercooled links
Reply With Quote
  #3  
Old 29 Mar 2009
Registered Users
Veteran HUBBer
 
Join Date: Oct 2002
Location: Stockholm - Sweden
Posts: 317
R90W:
http://blitztest.tripod.com/ChiHeads/Photos_R90W.html

Chiang Jiang:
- the only WaterCooled 2-cylinder boxer in production:
http://www.chang-jiang.com/bmw/m1cool.html
__________________
Drive Safely,
Albert
Reply With Quote
  #4  
Old 11 Apr 2009
Registered Users
Veteran HUBBer
 
Join Date: Apr 2001
Location: Canada and the Alps
Posts: 134
Quote:
Originally Posted by bryan View Post
what is the "normal" working temperature for the cylinder head on the old airhead twins?
What do you mean by "normal working"? Run two up loaded with gear and it'll be higher.

In general, I would guess somewhere around 350°F to 375°F with a maximum at 425°F. These numbers based on aircooled aircraft engines.
__________________
All the best,
Alex

Alex's BMW Motorcycle & Global Touring Page
SmugMug Site
Alps Motorcycle Tours - Priced Right


- If motorcyclists claim to be individuals, why then do so many of them ride in packs?
Reply With Quote
  #5  
Old 9 May 2009
Registered Users
HUBB regular
 
Join Date: May 2008
Location: London, England
Posts: 42
Took theses today after a hours ride, 1992 R100GSPD stock setup with plugged air injection system.

Cylinder head temp is around 300 degrees


__________________
Morocco 2012
Morocco 2010
Reply With Quote
  #6  
Old 9 May 2009
Registered Users
Veteran HUBBer
 
Join Date: Apr 2001
Location: Canada and the Alps
Posts: 134
Quote:
Originally Posted by tatters View Post
Took theses today after a hours ride, 1992 R100GSPD stock setup with plugged air injection system.

Cylinder head temp is around 300 degrees.
So that was taken when you were parked and not under load at 60 MPH.
__________________
All the best,
Alex

Alex's BMW Motorcycle & Global Touring Page
SmugMug Site
Alps Motorcycle Tours - Priced Right


- If motorcyclists claim to be individuals, why then do so many of them ride in packs?
Reply With Quote
  #7  
Old 9 May 2009
Registered Users
HUBB regular
 
Join Date: May 2008
Location: London, England
Posts: 42
Theres not going to be much temp diffrence from riding under load around london to stopping straight way and taking a couple of shots from a hand held imager.
__________________
Morocco 2012
Morocco 2010
Reply With Quote
  #8  
Old 9 May 2009
Registered Users
Veteran HUBBer
 
Join Date: Apr 2001
Location: Canada and the Alps
Posts: 134
Quote:
Originally Posted by tatters View Post
Theres not going to be much temp diffrence from riding under load around london to stopping straight way and taking a couple of shots from a hand held imager.
Well temperatures drop off quickly at first...sort of like a discharging capacitor.

It would be interesting to see what the cylinder head temperatures would be at a steady cruise of 60 MPH or higher.

I remember the cylinder head temperatures in an air cooled aircraft engine.
__________________
All the best,
Alex

Alex's BMW Motorcycle & Global Touring Page
SmugMug Site
Alps Motorcycle Tours - Priced Right


- If motorcyclists claim to be individuals, why then do so many of them ride in packs?
Reply With Quote
  #9  
Old 10 May 2009
Registered Users
Veteran HUBBer
 
Join Date: Oct 2002
Location: Stockholm - Sweden
Posts: 317
Tatters,
Your pics were most interesting.

They have settled one issue - an indication on how hot the cylinders and heads may be at stop-lights and in city-jam.

Alex's point on how hot the heads may be at normal cruising speed is also interesting - far more tricky to get photos of though -

Could this be a gadget that may be a useful aid to get pics in speed?
Panavise Test
__________________
Drive Safely,
Albert
Reply With Quote
Reply


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 2025
Queensland is back! May 2-4 2025
Germany Summer: May 29-June 1 2025
CanWest: July 10-13 2025
Switzerland: Date TBC
Ecuador: Date TBC
Romania: Date TBC
Austria: Sept. 11-14
California: September 18-21
France: September 19-21 2025
Germany Autumn: Oct 30-Nov 2 2025

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!

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 14:40.