Aluminium mufflers.
Thread Starter
On The Tree
Joined: Jul 2005
Posts: 111
Likes: 0
From: Houston TEXAS
Aluminium mufflers. Is an aluminium mufflers feasable I know I can easily fab some up.
?exhauste corrosion a problem when dealing with aluminium.?
?I think aluminium might have bad resonating qualities.
maybe atleast the tubes ( or would i run into problems with different expansion rates. bettween the steel and aluminium parts)
I know this would save a lot of weight.
?exhauste corrosion a problem when dealing with aluminium.?
?I think aluminium might have bad resonating qualities.
maybe atleast the tubes ( or would i run into problems with different expansion rates. bettween the steel and aluminium parts)
I know this would save a lot of weight.
Thread Starter
On The Tree
Joined: Jul 2005
Posts: 111
Likes: 0
From: Houston TEXAS
dents won't be a problem they are going to be tucked up between the frame rails, this is going in the LS1 powered 66 nova.
Heat,
I think anything 36 inches back or more would be far enough away that it wouldn't experience 1200 degree.
Heat,
I think anything 36 inches back or more would be far enough away that it wouldn't experience 1200 degree.
Thread Starter
On The Tree
Joined: Jul 2005
Posts: 111
Likes: 0
From: Houston TEXAS
technical I'm not talking about melting, I'm talking about warping.
how could a free floating object only solidly attached at one end warp.
I could see that if the temperture through out the pipe length was at near melting at one end and 180 degree at the other.
but alumnium spreads it heat out very quickly.
The temp should not get very high as long as the fuel ratio's are not to rich.
This will be staight back, to the mufflers then dumped before the axel not a bunch of bends an h pipe or xpipe. will be the only detours.
Last edited by ls1chevy2; Aug 26, 2005 at 09:45 AM.
Trending Topics
TECH Addict
Joined: Mar 2004
Posts: 2,336
Likes: 0
From: Fat Chance Hotel
Warp, twist, rotate...
What gauge are you planning to use? If you don't want the mufflers to deform at all you'll need a much heavier material to resist the warping, then you're right at the same weight as a lighter gauge stainless.
If you've worked with aluminum enough you'd already know this.
What gauge are you planning to use? If you don't want the mufflers to deform at all you'll need a much heavier material to resist the warping, then you're right at the same weight as a lighter gauge stainless.
If you've worked with aluminum enough you'd already know this.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo TECH Addict
Joined: Mar 2004
Posts: 2,336
Likes: 0
From: Fat Chance Hotel
I did have another thought. You could build the inner baffles using stainless and use aluminum for the case. It would resist twisting and still be lighter than an all steel muffler, but it would present a challenge mating the two materials.
Thread Starter
On The Tree
Joined: Jul 2005
Posts: 111
Likes: 0
From: Houston TEXAS
So I guess no one has or know anyone who has tried this.
Last week I welded a 3/8 inch thick plate to my A-arms to mount the airbags.
Month before I took 1.5" out of my IRS camber arms and welded those back together.
That far down the exhaust path warping won't be a problem the temp is just not great enough.
Besides warping is caused by uneven heating. IE welding in one place for to long. not hot even gas spread out over the entire area.
Now headers being solidly mounted and red hot at the start would warp
Rivits on the outside of the case would work temporarily, the aluminium case would expand slightly greater than the Steel baffels this might cause the rivets to work loose and cause some major rocks in a coke can sound effects.
If you've worked with aluminum enough you'd already know this.
Last week I welded a 3/8 inch thick plate to my A-arms to mount the airbags.
Month before I took 1.5" out of my IRS camber arms and welded those back together.
That far down the exhaust path warping won't be a problem the temp is just not great enough.
Besides warping is caused by uneven heating. IE welding in one place for to long. not hot even gas spread out over the entire area.
Now headers being solidly mounted and red hot at the start would warp
Rivits on the outside of the case would work temporarily, the aluminium case would expand slightly greater than the Steel baffels this might cause the rivets to work loose and cause some major rocks in a coke can sound effects.
TECH Addict
Joined: Mar 2004
Posts: 2,336
Likes: 0
From: Fat Chance Hotel
Originally Posted by ls1chevy2
So I guess no one has or know anyone who has tried this.
Originally Posted by ls1chevy2
Last week I welded a 3/8 inch thick plate to my A-arms to mount the airbags.
Month before I took 1.5" out of my IRS camber arms and welded those back together.
Month before I took 1.5" out of my IRS camber arms and welded those back together.
You also have to deal with pressure. If the Al is too thin it will bellow and reverberate with exhaust pulses. I can't imagine that would sound good. There's also the problem of cracking. I've seen plenty of steel mufflers crack...Al would be much worse. There still is enough heat in the exhaust, even that far back, that would cause the Al to fail.
Seriously, go the Ti route or just use 20 gauge stainless. Still very light, but more durable than Al.
