Aluminium Exhaust

[speed]

So what's the plan now?


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[madjak]

I've ordered a standard 3" straight through muffler. I'll Keep the aluminium pipe from the headers to the back of the diff. The all aluminium exhaust had an excellent tone even if was a little loud with that tiny muffler. I had lots of comments on the track how good my car sounded when reving.

Looking in the muffler with a torch I can see a whole stack of the perforations missing. Might explain why the glass packing blew out!

[speed]

Am guessing too much heat rather than flow blew out the perforations.
I'm impressed that you are going against the norm for something better.
Any photos of your headers or did I miss that?


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[madjak]

Well my new muffler is a reflective style one. So it has multiple 'v' shapes inside the muffler to reflect and cancel sound. I believe the rotary guys use them and I figured given I have a car that sounds a bit like a rotary it might work for me. Another experiment!

The only issue it it's heavy... if it works, maybe I could make an aluminium version!

The car does throw some flames out the back... so maybe your right and the heat melted the perforations.

I'll PM you some photos.

[speed]

Rotors put out a lot of heat and force. Glass packing wouldn't last a day in my rx7 on the track.
I used SS packing and its fine.
That's the reason I suggested it.
Maybe if the alloy perforation tube had a thicker wall (like the rest of your system) it may survive but considering your blowing flames then I probably wouldn't waste time trying.

How bout a combination of alloy for muffler body and SS for perforation tube?

Curious to hear how you get on with the new muffler.

Now I better check out those photos


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