Corrosion in Laguna exhaust

Joe Kelleher · 2004-08-08T18:59:42+00:00

I've just changed the silencer box on my 1.8 8V Renault Laguna. While I wasunder there I renewed the front pipe to intermediate pipe clamping ring,which is a U-shaped ring with a bar that compresses the front pipe onto theintermediate pipe inside it. A liquid more viscous than water(sulphuricacid?) used to drip from this joint after short runs. Is it possible that by'fixing' this joint I may be retaining water, or worse, in the exhaust,thereby accelerating corrosion? Should I drill a small hole to allow it todrain away?Also, I noticed that the box won't hang in the correct position by itself,and I needed to get someone to hold it while I tightened the joint with theintermediate pipe (two C-shaped half-rings that hold a flange to a ridge).Thus, once assembled there is a torsional load on the joint keeping the boxin place. In fact, the corrosion failure happened near this joint, on thesilencer side, meaning the box rotated on its hangers when the old boxfailed here. Is it normal for the box to be supported in this way, or have Iput the rubber hangers on incorrectly? Could the corrosion be a form ofstress-corrosion-cracking, where the exhaust pipe is under torsional load?Joe

Aug 08, 2004 24 Replies

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Peter Hucker 21 years ago

For fun. If you don't like sigs, dont read them.

I don't quote sigs. My newsreader works. Someone else must have done.

You screwed up, I ain't a top poster. I hate top posters.

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David Taylor 21 years ago

Peter Hucker wrote on Fri, 20 Aug 2004 09:31:25 +0100:

Someone else did.. But you left it in there.

OK, you middle posted. You put your reply in the right place, and if you'd just deleted the rest of the crap (mainly your twice quoted sig), I'd never have complained in the first place :)

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Peter Hucker 21 years ago

That's an ancient rule. You can't get much in 4 lines. My websites take 3!

It ain't an average.

30 sigs at the bottom! Got fed up in the end and added a "sig-quoted" filter to my killfile :-)

Probably didn't notice it. My newsreader (and all of them I think) only remove unquoted sigs.

You're too pedantic. I frequently complain about lack of snipping, but only when it gets rediculous.

And no you won't be the first to say I made a spelling mistake.

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David Taylor 21 years ago

Peter Hucker wrote on Fri, 20 Aug 2004 22:30:50 +0100:

wrote: [snip]

Perhaps. Then again, 60 lines of sigs and 20+ lines of quoted text, all for a one word is perhaps verging on the ridiculous.

Indeed I won't. Since I don't beleive I've ever said you made a spelling mistake.

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Dave Plowman (News) 21 years ago

If it's the same Peter Hucker who continuously crossposts untrimmed trolls to irrelevant newsgroups it's par for the course.

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