Yellowing of chrome

[Z1B Alan]

As per title the chrome on the headers on my Z1B have yellowed slightly mostly on no1 cylinder. Is it possible to polish this off without affecting the finish {dont want to be left with scratch marks in the chrome}.

[Garn 1]

Alan, that yellowing is usually the first stage of "bluing" of the pipes and usually caused from excessive heat of that cylinder pipe, which is attributed from mal-tuning. If you have checked that all cylinders are "in tune" then I would look at a topic somewhere in this forum that deals with a special polish that does remove bluing. If it is not too advance it can be done.

I always think a slight discolouring is ok, however, all pipes should look the same!
Regardz.

[kev edwards]

All pipes discolour as long as it's the same across the four it's normal, as for polishing it off everytime' if you do that the chrome gets thinner so my advice is to leave them to go thier own colour .

[Garn 1]

Alan , further to my previous post, here is something recent on one of the products I was talking about. There are many more posts on "Blueing" on our own forum... Just hard to find! Perhaps a moderator could help.
<http://www.kzrider.com/forum/2-engine>
RegardZ.

[jimmock]

I always practised this theory......


A cylinder burning oil will run a LOT hotter and thus cause the blueing effect.

Anything that can cause over heat in exhaust gasses will blue the headers.


Jimmock.

[Garn 1]

Alan, have a wade thru these...
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Regardz

[wilsonsjw11]

There is a product called Blue job and it will supposedly remove blueing from pipes.
Regards
Steve

[Garry.L]

Should be interesting when you go into the shop and ask the sales assistant for a 'Blue Job'.......

[jimmock]

Should be interesting when you go into the shop and ask the sales assistant for a 'Blue Job'.......

COME ON......


This is supposed to be a specialist bike site?????


I'm shocked.

Jimmock.

[Garry.L]

Should be interesting when you go into the shop and ask the sales assistant for a 'Blue Job'.......

COME ON......


This is supposed to be a specialist bike site?????


I'm shocked.

Jimmock.

[GEZ635]

Got to disagree that all pipes discolour. It is normally because the bike is running too lean and getting too hot so check your mixtue settings. As you know, original pipes have thicker down tubes than the copies and never seemed to blue. We have fitted lots of copy exhausts and never had then discolour but I know how annoying it must be when they do. Blue job polish will work but unless you address the problem the discolouring will just come back.

[kev edwards]

Double skinned pipes do not suffer, were the early originals double skinned? pipes will always discolour unless your bike is just an ornament, it's the nature of the internal combustion engine.

[Steve Cooke]

I have done about 3000mls. on my new original pipes and there is not even a hint of discolouration as yet, it is nearly always down to improper running of the engine ie. too hot. Some cheaper pipes will obviously be a bit more prone to it than some others.

[paulstrees]

Got to disagree that all pipes discolour. It is normally because the bike is running too lean and getting too hot so check your mixtue settings. As you know, original pipes have thicker down tubes than the copies and never seemed to blue. We have fitted lots of copy exhausts and never had then discolour but I know how annoying it must be when they do. Blue job polish will work but unless you address the problem the discolouring will just come back.

Agree with Ges,I,ve fitted a lot of new replica systems over the last few years and never had a problem,its down to a poor set up and not warming the pipes up a few times before riding

[RAYZ1]

I fitted replica pipes and before fitting I was advised to soak the insides with used engine oil, the oil burns off quick and leaves an insulating layer which helps prevent blueing - the tip came from a mate who has single skin chrome pipes on his 67 Camaro - apparently its done a lot in the custom car scene

Anyway no blueing as yet

I have also seen blueing on double skin pipes - theyre not beyond discolouration either