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940 Daily Driver -- Walker Exhaust Lasts Only 2 Years?

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940 Daily Driver -- Walker Exhaust Lasts Only 2 Years?

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  #1  
Old 06-22-2016, 10:57 PM
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Join Date: Mar 2010
Location: The Motor City
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Default 940 Daily Driver -- Walker Exhaust Lasts Only 2 Years?

Is there something wrong with Walker aftermarket exhaust parts? After just two years, I have cracking & leaking around the converter flange, and the over-axle pipe is perforated with rust. Or is there some trick to installing them?

They do salt the roads here. Oy, Vey! Do they salt the roads here -- sometimes it's applied with such enthusiasm that the roads are crunchy. To counteract this, I hose down the underside a few times each winter, when it's (relatively) warm. There's otherwise not a lot of rust under there.

I'm not opposed to an aftermarket exhaust so long as it doesn't cost a fortune or sound like a fart can.

1993 940 wagon, 99% factory stock, B230F naturally-aspirated inline-4 engine. All the factory brackets on the Y-pipe.
 
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  #2  
Old 09-17-2018, 06:54 PM
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Installed a new exhaust system this week. Starla, this time. I'll report back on its longevity occasionally.

Initial impressions:
The Starla exhaust seems to be a lot quieter than the Walker ever was. I realize I was driving around with a holy exhaust system before, but when I first started the car, the impression was "Wow! That's quiet.". When I installed a new Walker exhaust in the past, it didn't make any impression at all; it was merely adequate.
The Starla mufflers seem heavier than the Walkers.
The Starla was easier to install. Everything seemed to fit better.

I thought I was meticulous about collecting all the little parts before beginning, but still missed one and had to make a middle-of-the-project run to the auto parts store. I suppose that's just about inevitable.
I forgot that the (Walker) converter pipe had rusted & broken off at the discharge end and that I had added a generic adapter to make up for the lost length. I think I'm going to buy a second one and put it on the shelf for the next time.

Does anybody have any idea why pipes break off at the joints? Does the swaging process create a ring of stress concentration that doesn't get relieved?

It was an easy one-day shade-tree job. Partly because I've done it before. Not just on this car but zillions of others -- I worked in a Sears garage while I was an undergrad and installed several exhaust systems every day. And partly because I used a generous coat of aluminum anti-seize compound the last time. I did the same this time, putting anti-seize compound everywhere two pipes came together. And on the manifold studs and hanger bolts. And on the driveway, my pants, my hands, my elbows, my shirt and even a smear on my forehead for good measure. (not sure how that last one got there)

Despite the short amount of time they've been installed, this job wasn't premature.

 
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Old 09-17-2018, 10:42 PM
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Location: Birmingham AL
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We used to install a lot of Starla brand exhaust systems on 240s. They whole system was less than $100 and took about an hour to install. Good quality.
 
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Old 09-21-2018, 03:03 AM
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Seems to have the same power & acceleration it had with an open pipe after the converter, suggesting that the Starla exhaust imposes an unimportant amount of back pressure.
 
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