copper exhaust tech? info wanted.

[rn-85]

i want to know details about copper exhaust ive heard it's a old school mod and is now illigal however, when ive been looking around i can find no details on the net.

i've spoken to people about it and it is suposed to be better than steel and have a sweet note. but with the high price of copper it isn't realy an option for most people, unless you already have the copper .

[RONA]

i want to know details about copper exhaust ive heard it's a old school mod and is now illigal however, when ive been looking around i can find no details on the net.

i've spoken to people about it and it is suposed to be better than steel and have a sweet note. but with the high price of copper it isn't realy an option for most people, unless you already have the copper .

Egads she be burning green captain, I wouldn't use copper for an exhaust its way too soft

[rn-85]

im familar with the melting point of copper being a plumber and all. and it'll be a cat back system so there wont be too much heat. the copper which has become available to me is relitively thick walled.

[SL666]

i think the high rate of expansion will cause you problems.. and also work hardening and cracking.. (unless its really thick walled) and eventhen.. its heavy.. why.. i don't think the metal will really have much effect on the actual exhaust note..

[hemi twofifteen turbo]

yeah the material does effect the note, just ask any musician!!!
My uncle did this years ago (60's) as he was a plumber, one day had the pipes out the passenger side door, wasn't loud enough, so moved them to the drivers door lol.
you could get away with it back then.. Just give it a try?

[SL666]

yeah the material does effect the note, just ask any musician!!!

please explain.. i lack a musical bone in my body.. my understanding was that instruments were made from the soft metals they are for ease of manufacture?

[Ben Wilson]

You'll get some resonance through the materiel. I'd assume softer metals would resonate more easily giving a different note.

A bit like the amount of sound which comes out through the side of a speaker box vs the speaker itself.

[Norbie]

Fark me, 2 or 3 metres of thick-walled 3" copper tube would have to weigh a metric shiteload!

[river]

Hi,

What a rude young man you are, Norbie!

It's probably got something to do with the resonance of the material. The design and material used helps to amplify and resonate - like an acoustic guitar or violin body.

But, as so elequently put by our impish queensland friend, copper would be pretty heavy - and I don't know if you'll get the resultant sound you are looking for, especially when one considers the weight penalty.

Besides, you'll be out there each week giving it a buff with brasso 'cos it's gonna go green and yukky looking.

seeyuzz
river

[JustCallMeOrlando]

I thought part of the reason steel was used was because it isn't a very good conductor of heat, the air is going to slow down as it moves along and is scrubbed of heat, and I would've thought a good conductor like copper would've made this problem worse?

[SL666]

the idea of soldering on flanges to then bolt in a muffler cracks me up

[rn-85]

the copper wont go a yucky green coulor to badly, and i dont realy care cause i dont spend much time under my car. river i'm not sure on your age but the old hod rod fellas used to use it, maybe ray would have a good idea.
weight is a bit of and issuse but im just trying to find more out about this

[kingmick]

Lol, well you sure doing find some diffrent ideas on the forums!
mild steel, its cheaper

[rn-85]

na cause i have to buy mild steel and tools to bend it

[kingmick]

Seriously, i wouldnt bother, but you could always do something completely diffrent, the choice is yours