15 replies to this topic

[jime17]

Hi all,

As above really. Needs replacing as its rotten where the inlet joins the rear silencer.

Seems straight forward - 2 rubber hangers and a 2 piece clamp at the union with the middle section, but if experience has taught me anything, its even the simplest jobs usually end up being a nightmare.

Got ramps and axle stands but never done an exhaust before strangely enough even though I've been driving heaps for 25 years.

Any tips from those in the know?

Jim.

[Ben_O]

When i did mine, i undid the nuts on the 2 piece clamp which both sheared, took the hangers off and that was it. 

 

When refitting the new one, i hung it in place with the rubber hangers, pulled the joins together and slipped on a new clamp with some exhaust sealant in the join, tightened and that was it.

 

make sure you check the join end of the centre section as mine was very crusty and pin holed so i ended up removing the centre section from where it joins the cat and cleaned it all right up. Welded up a few pinholes as i was too tight to replace it and then put it back on.

 

I think it took me under an hour to do the whole lot including removing repairing and refitting the centre section.

 

If you are just doing the backbox then 15 mins should be plenty

[jime17]

I had a quick look and the clamp looks like its a single piece affair with one long bolt and a nut.

I think I may have the same issue as you. It all looks rather rusty.

Are the clamps universal things that I can buy just in case when I pick up the back box from the factors?

Mot tomorrow and it decides to give out on me today. Typical.

[Ben_O]

Motor factors will stock a clamp for it. Mine was 2 piece, basically 2 halves, one with threaded rod and the other without. Just slide the two together over the join and do up the nuts.

 

Yours sounds like the type i have on my scenic which are awful to put back on. Like this one http://www.ebay.co.u...=item3ccb42ab68

 

I had this one http://www.ebay.co.u...=item3f25ff9a73

 

Much easier

[Dale_]

It is honestly one of the easiest jobs to do on that car! 106 and saxos are the easiest cars to work on full stop :) where abouts are you based?

[jime17]

Yep that's the one Ben. Single piece thing. I'll see if I can get a two piece.

im hoping so dale.

I'm in lancs. These days.

[rusty789]

I would advise doing it in 'normal business' hours as other parts maybe rotten as well, the centre pipe for instance.

 

At least then if anything does break you can buy it straight away and you won't be car less until you get a new part.

[Ben_O]

Last time i looked, a centre pipe was about £25 so worth replacing if it is damaged in any way.

 

Parts are very cheap for these though. I bought a pair of brand new fully built up driveshafts for mine, £50 for the pair!

[jime17]

I'm hoping I'll get away with the centre section. The area around the union is pretty corroded but looks to be solid.

The failure is in the weld that seals the pipe inlet to the back box and its pulling out of the silencer.

Time will tell I guess as with most things.

[The Matt]

The problem is, they invariably snap off at the join on Pugs given a bit of time.  You'll replace the backbox now, the flange will be corroded and weakened on the centre pipe where the backbox seals against.  You'll clamp it down, seal it, then within a few months you'll end up with the centre pipe snapping just in front of the clamp.  Happens SO many times on Poogeots.  

 

When I used to work at an exhaust/tyre place we always used to advise that the centre pipe be replaced with the backbox, people would ignore it, then they'd be back within a month or two blaming us because the backbox had "fallen off".  It was always because the centre pipe had snapped, but they still assumed it was our fault and tried to get us to fix it for free,

[jime17]

Too late matt. Did it Thursday. as said by everyone it was a piece o cake. I can see where you're coming from though. The flange was reasonably corroded, but it seems simple enough to change the centre section as long as those weird shouldered pin/bolts at the Down pipe end don't shear....

by the way failed mot on CO emissions.

Going in for a new cat Monday. Mechanic says that should sort it.

[Ben_O]

 as long as those weird shouldered pin/bolts at the Down pipe end don't shear....
 

I thought that those bolts on mine would shear but they didn't. The reason i had mine off is because it was blowing at the join. I couldn't tighten the bolts anymore and the join was physically loose.

 

I made up some 1/4" spacers out of some small steel tube and fitted them before the little springs to take up the slack so the joint tightens before you run out of thread.

 

Ben

[Ben_O]

oh, and you might need a new gauze gasket. You will see what i mean when you get it off

[jime17]

Cheers guys. Always sensible advice here.

How's the scenic Ben?

Are you enjoying those 1900cc of dci goodness?

[Ben_O]

Cheers guys. Always sensible advice here.

How's the scenic Ben?

Are you enjoying those 1900cc of dci goodness?

Scenics good thanks mate. Done 250 miles in it now with no problems. Just need to slacken off the exhaust clamp, spin it round about a 1/3rd and then re-tighten as when going round tight left handers, the excess thread on the clamp knocks against the tunnel slightly.

 

And yes, the 1.9DCI seems to pull very well. get it into third and then plant your foot and it just keeps going and going and going and your doing a ton before 4th if your not careful! 

 

Cheers

 

Ben