Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > Yamaha Tech

Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
Contact Overland Solutions for all your custom modifications and setup for overland travel.

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 14 Jul 2013
Registered Users
HUBB regular
 
Join Date: Jun 2012
Location: UK
Posts: 59
Avoiding heat-discolouration on a stainless steel exhaust pipe: possible?

Hi, folks

I have Motad stainless steel exhaust header pipes to put onto my 4PT, and a stainless steel tailpipe in the post.

Does anyone have any idea how I can prevent heat-discolouration or blueing, when I've got them onto the bike? Is this something that can actually be prevented or lessened - perhaps by somehow tempering the metal with heat during the first few runs of the engine - or is this heat-discolouration simply inevitable?

Would be grateful for any enlightened/experienced opinion/advice on this.


Salut.
Reply With Quote
  #2  
Old 14 Jul 2013
Registered Users
Veteran HUBBer
 
Join Date: May 2013
Location: Wisconsin, USA
Posts: 313
The only way to stop it is to not start the bike unfortunately. I work in a stainless shop and there is no way to not have it blue. If the exhaust temp never exceeds a certain temp(350-450F ish) it will stay bright, but once the ehat goes up, first comes a straw color, the gold, the purple/blue, then deep blue. You could have a shop make "covers" that standoff from the pipe about 1/4"-3/8" with enough openings for air movement, it would stay bright. Lots of extra cost though.
You canuse a metal polish to reshine the pipes up from time to time but the coloring will always be back.
Reply With Quote
  #3  
Old 14 Jul 2013
Redboots's Avatar
Contributing Member
Veteran HUBBer
 
Join Date: Feb 2006
Location: On the border - NE FR
Posts: 841
Quote:
Originally Posted by Bigfoot 2 View Post
...or is this heat-discolouration simply inevitable?
Its inevitable. However, you can take them off periodically and have them re-polished. Look better than new.




J
__________________
Nostradamus Ate My Hamster
Reply With Quote
  #4  
Old 14 Jul 2013
Registered Users
Veteran HUBBer
 
Join Date: May 2013
Location: Norway
Posts: 446
I didnt get any blue on mine, they are goldish. You can see on picture of my bike here : http://www.horizonsunlimited.com/hub...ension-60728-4
Reply With Quote
  #5  
Old 14 Jul 2013
kentfallen's Avatar
Registered Users
Veteran HUBBer
 
Join Date: Jan 2008
Location: Isle of Sheppey, Kent, England, UK
Posts: 668
Although both my bikes are mint, the pipes / manifold are a horrible brownish grey colour. I have tried to polish them but without much effect. I think both were used for a short time off-road and the brown colour seems to stem from mud. The polishing improved them but they still look odd compared to the rest of the bike.

If anyone knows how to polish them, I would like to hear.
__________________
Triumph Bonneville 800 (2004), Yamaha XT600E (1999), Honda XBR500 (1986).

Reply With Quote
  #6  
Old 14 Jul 2013
Registered Users
Veteran HUBBer
 
Join Date: May 2013
Location: Norway
Posts: 446
I use this one and its like new after polishing with my drill. Polersett, 5 deler - Biltema

You find same on ebay or in your local store.
Reply With Quote
  #7  
Old 14 Jul 2013
kentfallen's Avatar
Registered Users
Veteran HUBBer
 
Join Date: Jan 2008
Location: Isle of Sheppey, Kent, England, UK
Posts: 668
XTROCK,

Ordered!

Thanks for that matey.

Neil
__________________
Triumph Bonneville 800 (2004), Yamaha XT600E (1999), Honda XBR500 (1986).

Reply With Quote
  #8  
Old 14 Jul 2013
Registered Users
Veteran HUBBer
 
Join Date: May 2013
Location: Wisconsin, USA
Posts: 313
I have some "Metal Bright" and "Heavy Metal" polish for the mirror stuff. Others I get scotchbright polishing belts and unitized wheels from work that do the initial polishing.
Reply With Quote
  #9  
Old 15 Jul 2013
bacardi23's Avatar
Registered Users
Veteran HUBBer
 
Join Date: Sep 2007
Location: XXX<-Portugal->Azores->Santa Maria (island)
Posts: 1,523
I'm a TIG welder and when working outside discoloration usually happens because the shielding gas often is blown away even if you use a large gas lens..

Easiest way (without chemicals) is to use the scotch brite "green pads"!
Proper way to use the pads is to rub them side to side on the pipes! IF you do it lenghtwise it will leave scratch marks on your pipes!

One easy to make a "cleaning paste" is with lemon juice(squeezed) lol and baking soda!
with this paste and the scotch brite, the pipes will be clean in no-time flat!


Vando
Reply With Quote
  #10  
Old 16 Jul 2013
Registered Users
HUBB regular
 
Join Date: Jun 2012
Location: UK
Posts: 59
Oh, well...

Thanks, all. I had hoped it was preventable (in a reasonable way, rather than by 'throttle-abstinance'!). Elbow grease it is, then.
Reply With Quote
  #11  
Old 16 Jul 2013
Registered Users
Veteran HUBBer
 
Join Date: Dec 2008
Location: Denmark
Posts: 1,056
Quote:
Originally Posted by Bigfoot 2 View Post
Oh, well...

Thanks, all. I had hoped it was preventable (in a reasonable way, rather than by 'throttle-abstinance'!). Elbow grease it is, then.
Orrrr......A little bit of this:

http://tinyurl.com/yfjkvwq
Reply With Quote
  #12  
Old 17 Jul 2013
Registered Users
HUBB regular
 
Join Date: Jun 2012
Location: UK
Posts: 59
Er... Thanks, Jens. Have you forgotten to take your pills again?

Quote:
Originally Posted by Jens Eskildsen View Post
Orrrr......A little bit of this:
http://tinyurl.com/yfjkvwq
Reply With Quote
  #13  
Old 17 Jul 2013
Moderated Users
Veteran HUBBer
 
Join Date: Apr 2008
Posts: 502
A coil of copper wire wrapped around the exhaust will prevent the discoloration from developing, but then you gotta look at the coil of copper wire.....
Reply With Quote
  #14  
Old 17 Jul 2013
Registered Users
Veteran HUBBer
 
Join Date: Feb 2005
Location: uk
Posts: 146
info

hi just to add copper gives off poisonous fumes when heated ( one of the reasons we cant have copper down pipes) and when sitting in traffic or at traffic lights the fumes will rise and you could breath them in, steve
Reply With Quote
  #15  
Old 17 Jul 2013
Registered Users
Veteran HUBBer
 
Join Date: May 2013
Location: Wisconsin, USA
Posts: 313
Then use aluminum, it's just a heat sink.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
 
Thread Tools
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Scotts Stainless Steel Oil Filter bm150875 Yamaha Tech 13 21 Jun 2013 09:42

 
 


HU DVD Summer Special!

Now that summer is here, get On the Road! Take 30% off the Achievable Dream - On the Road! 2-DVD set until August 31 only. Get On the Road! Learn the tips to staying healthy, happy and secure on your motorcycle adventure!

Our veteran travellers share their tips (and great stories) for staying healthy, happy and secure on your motorcycle adventure.

"A fantastic, informative and inspirational DVD."

"It's brilliant - thank you very much!"

Check it out at the HU Store! Remember to use Coupon Code 'ONTHEROAD' on your order when you checkout.


Renedian Adventures


Renedian Adventures

What others say about HU...

"I just wanted to say thanks for doing this and sharing so much with the rest of us." Dave, USA

"Your website is a mecca of valuable information and the DVD series is informative, entertaining, and inspiring! The new look of the website is very impressive, updated and catchy. Thank you so very much!" Jennifer, Canada

"...Great site. Keep up the good work." Murray and Carmen, Australia

"We just finished a 7 month 22,000+ mile scouting trip from Alaska to the bottom of Chile and I can't tell you how many times we referred to your site for help. From how to adjust your valves, to where to stay in the back country of Peru. Horizons Unlimited was a key player in our success. Motorcycle enthusiasts from around the world are in debt to your services." Alaska Riders

contest pic

10th Annual HU Travellers Photo Contest is on now! This is an opportunity for YOU to show us your best photos and win prizes!

NEW! HU 2014 Adventure Travel T-shirts! are now available in several colors! Be the first kid on your block to have them! New lower prices on synths!

HU 2014 T-shirts now in!

Check out the new Gildan Performance cotton-feel t-shirt - 100% poly, feels like soft cotton!


What turns you on to motorcycle travel?


Global Rescue, WORLDwide evacuation services for EVERYONE

Global Rescue is the premier provider of medical, security and evacuation services worldwide and is the only company that will come to you, wherever you are, and evacuate you to your home hospital of choice. Additionally, Global Rescue places no restrictions on country of citizenship - all nationalities are eligible to sign-up!


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 R80 G/S motorcycle.

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 (22 this year!); 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, the HUBB or to receive the e-zine. 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.


Books & DVDs

amazon

All the best travel books and videos listed and often reviewed on HU's famous Books page. Check it out and get great travel books from all over the world.


Motorcycle Express for shipping and insurance!

Motorcycle Express

MC Air Shipping, (uncrated) USA / Canada / Europe and other areas. Be sure to say "Horizons Unlimited" to get your $25 discount on Shipping!
Insurance - see: For foreigners traveling in US and Canada and for Americans and Canadians traveling in other countries, then mail it to MC Express and get your HU $15 discount!




All times are GMT +1. The time now is 17:34.