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Options for replacing rear muffler on 1978

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Old 05-02-2007, 02:00 PM
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Fabio421
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Default Options for replacing rear muffler on 1978

My rear muffler on my 78 has some rust holes in it and is to far gone to repair. This is the year where Porsche felt it was necessary to bolt the battery box to the transaxle, and the muffler to the battery box. This means that I will either have to buy a good used 78 muffler which I really don't want to do because it's very heavy. Or buy an aftermarket muffler and weld my bracket for the battery box to it. This is what I am planning to do but the configuration of the muffler is a little odd. The inlet location and the outlet locations and angle are most likely not common. Has anyone here already been through this process? If so, what type of muffler did you use.

Thanks
Old 05-02-2007, 02:06 PM
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hacker-pschorr
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Just take it off - my 81 sounded great with just he CAT.

My 79 sounds even better with open pipes after the headers
Old 05-02-2007, 02:07 PM
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AO
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+1 (open pipes is 'da BOMB! )
Old 05-02-2007, 02:08 PM
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I already tried that. I have headers, a Y pipe and a mid mounted teeny tiny muffler. I think it sounds too Nascar this way. I know, I'm probably in the minority but my 84 sounds better to me. Its all stock except the cat is gutted.
Old 05-02-2007, 02:13 PM
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Vilhuer
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Odd muffler design is understatement. I would just put straight pipe at rear and add larger muffler after Y.
Old 05-02-2007, 02:24 PM
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killingmoon65
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I put a $29.95 Cherry Bomb on my 78 and it sounds great. Cheaper than the stock replacement and even came with this cool little sticker.
Old 05-02-2007, 03:10 PM
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Take it down to your local custom exhaust shop. When I had my 79, for $500 I had new cats put on, and muffler and all stainless plumbing and nice chrome tips. It sounded great.

You have to find a custom shop... not a chain.
Old 05-02-2007, 03:45 PM
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Fabio421
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Originally Posted by Shark Attack
Take it down to your local custom exhaust shop. When I had my 79, for $500 I had new cats put on, and muffler and all stainless plumbing and nice chrome tips. It sounded great.

You have to find a custom shop... not a chain.
I thought about that but I was worried that they would hassle me about not having cats.
Old 05-02-2007, 03:47 PM
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Originally Posted by Fabio421
I think it sounds too Nascar this way.
You have a small block high reving V8 - that is what they sound like

If you want to drive something that sounds like a sweing machine, there are plenty of 911's for sale
Old 05-02-2007, 04:40 PM
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i felt i lost some power without it?
Old 05-02-2007, 05:29 PM
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Originally Posted by dan davies
i felt i lost some power without it?
You felt that you lost power with what?
Old 05-02-2007, 05:33 PM
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the rear muffler,



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