How Do They make The muffler Tip Burnt Style

[TYPE-ONE]

hey guys.

Just wondering if anyone has insider information into how exhaust companys make the stainless steel tips burnt, titanium look.

Thanks

[h22a accord]

good question, ive never thought about it but i would like to know too. Im thinking it would be some sort of high heat treatment and then sudden cooling etc.

[Tobster]

Probably blowtorch. You just need to burn the metal (have a look at an overheated drill bit).

The only problem with burning metal is it gets soft...

[spoonsir2]

was told with an "oxy burner,.... "

[philBo]

im sticking my neck out there and saying that its either the way they cut it..or as tobster mentioned, heating it some how.

[integral90]

Could it just be staining of the metal?

[bigjo5]

was told with an "oxy burner,.... "

yup i second that.. try using a oxy welder... that works... just burn ther outer tip of the exhaust and let it cool then u get that titaninum tip effect.

[jdm_kid]

for the gold effect, steam dream it hahha

[TYPE-ONE]

Ok. I'll ask my exhaust fitter to give it a go.

[m3ntAL_l2]

do u mean that the tip of it turns blue??:confused:
if thats wot u mean then its the metrial of teh exhaust, it changes colour when its heated

[vteccoupe]

hey guys.

Just wondering if anyone has insider information into how exhaust companys make the stainless steel tips burnt, titanium look.

Thanks

ricer! haha :thumbsup:

[TYPE-ONE]

When you buy a s/s header it turns purple after a while so heating the inside pipe is prolly what has to be done.

[Q_ball]

I would believe that its caused by the heating of the metal then cooling it quickly.
The quick changes in heat allows for the colour change in metal.

[Tobster]

Nothing to do with how quickly you heat or cool it (you're not hardening and tempering for those who remember any metalwork from school), or whether it's done inside or out.

It's not what metal it is, although the type of metal will be affected by more by different temperatures.

Just heat it (a lot -- oxy-acetelene torch (blowtorch) is the most controllable, but you could stick the end in a campfire if you wanted -- ever stuck an empty tin in a fire?) and you are literally burning the metal -- that's what causes the discolouration.

It was probably done first by accident and now it's trendy...

[NightKids]

this is a good question & it definately doesn't belong in the 'noob' section. if anyone knows how to do this then we don't have to fork out so much money for the Spoon titanium gear knobs

[TYPE-ONE]

you mite get the look of spoon titanium but you wont get the same feel. I got one. Loving it!!!!!!!!!!1

[Twincam16]

you mite get the look of spoon titanium but you wont get the same feel. I got one. Loving it!!!!!!!!!!1

... and you dont need to sell your ass or soul for it either... unlike spoon gear... :p

The colour change is caused by heating certain metals. Dont bother googling either, as the compounds used in your exhaust would only be known by a metallurgist, and I doubt your gonna take a chunk off and get it tested. All stainless steel metals (all manufactured metals/alloys actually) are made up of a few different compounts, and as such, different percentages of different steel - this affects the grade of stainless steel, and the colour it burns.

Just stick it in heated coals overnight, or oxy-acetelene it (around the tip!)... Better yet, go and buy one from liverpool exhaust, they are getting cheaper all the time.

[Boban]

So has anyone done it yet to their exaust, i'm interested to see how it turns out

[Onrmnd]

yeah ditto!

[Limbo]

when they welded on the tip i notice that the effect on where the welds are are a blue burnt look like the blue flamed tip. I assume if you zap the inside with weld then it will do the same thing (can always grind off the weld). Or similarly heat it till it glows then let it cool.

[panda[cRx]]

So has anyone done it yet to their exaust, i'm interested to see how it turns out

we did it on my mates evo3 as the blue on the tip had faded over time. just used a blowtorch he had in his garage, turned out great. looked like it did as new :thumbsup:

[string]

you mite get the look of spoon titanium but you wont get the same feel. I got one. Loving it!!!!!!!!!!1
Yeah I love the smooth touch of titanium... I PITY THE FOOL WITH STAINLESS!

[SKREMN]

at my mates 21st we went to the industrial area and stole a 40 gallon drum
we had a fire going in it all night the next day the drum had the coloured finnish on it not long after that turned brown from rust

[CUL8R]

my exhaust tips have got this nice black layer around the ends(rich fuel mix and launch controll spurting fuel), once the exhaust polished a bit with a wet towel they look tops!

[yourfather]

was told with an "oxy burner,.... "

ding ding ding we have a winner.

[aimre]

its oxidation of the metal at high temps.

a quote from my metalurgy work from uni,
"Surface finish is inferior to cold work because of oxidation (http://vista.elearning.unsw.edu.au/webct/mediadb/viewEntryFrameset.jsp?id=24694107) of the metal"