Can someone tell me what turns the header pipes blue. Is it hard running?, fuel mix too lean?,
Seems to be a lot of aftermarket systems that get this bluing.
Forum whore
Can someone tell me what turns the header pipes blue. Is it hard running?, fuel mix too lean?,
Seems to be a lot of aftermarket systems that get this bluing.
" Rule books are for the Guidance of the Wise, and the Obedience of Fools"
Tearing Choppa a new A'Hole
Stainless and titanium both go blue from heat. Pipes get hot. Funnily 'nuff, closest to the cylinder is the hottest bit. Mixture means shit.
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Smarty pants... since ages ago
It's caused by/with the heat treatment of the metals ... to do with Metallurgy ....
When life throws you a curve ... Lean into it ...
Forum whore
Many factory header pipes are double skinned (ie one pipe inside another), so the outer chromed surface stays nice, while the inner pipe rusts away. Looks nice, weighs lots
Aftermarket pipes are usually single thickness.
it's not a bad thing till you throw a KLR into the mix.
those cheap ass bitches can do anything with ductape.
(PostalDave on ADVrider)
Tearing Choppa a new A'Hole
You dumb fuck, if Leonardo DiCaprio couldn't turn lead into gold, then neither can you.Originally Posted by FJRider
Vote David Bain for MNZ president
Smarty pants... since ages ago
Hold it at the RED line for long enough ... and GOLD will be produced ... but from your pocket ...
When life throws you a curve ... Lean into it ...
"channellling the Pleideans"
its caused by heat, and exhausts run REALLY FUCKING HOT these days so that they can meet emissions regs. On my Triumph it has an air injector thingy up by the sparkplug to inject fresh air into the exhaust to make it burn more. and hotter. Apparently to stop the bluing, the first thing to do is remove the air injector. I did that, but also changed the airfilter, and the whole exhaust system.
Those race single wall titanium ones go a whole rainbow of colours, they're beautiful....
I thought elections were decided by angry posts on social media. - F5 Dave
Forum whore
As before, heat.
Chrome turns a fairly vivid blue.
Stainless will yellow and depending on the mix in the stainless various shades of brown near the ports.
Titanium is impressive, blues, reds, golds depending on the amount of heat.
US Harley chaps hate the bluing so just about all systems for HD's are twin walled or often covered in a secondary set of chrome heat shields to hide any discoloration.
When I was a young chap starting riding blued headers were considered impressive as it showed you'd be giving it heaps and were (hopefully) a hard-arse rider.
If your ride has more than one cylinder and only one pipe has blued it could be a sign of something wrong in the mixture department and worth looking into.
Hardcore Biker
As folks have said it is heat related. They don't just turn blue however. The colouration is caused by the metals oxide layer
http://www.tpub.com/steelworker1/142...s/image013.jpg
For a full list of metal colours see below. Up to 427 degrees C the colour is caused by the oxide coating, about that the colour comes from the metal itself
http://m4040.com/Knifemaking/PICTURE...owChart-sm.gif
"I don't like it, and I'm sorry I ever had anything to do with it." -- Erwin Schrodinger talking about quantum mechanics.
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