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S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
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How to replace exhaust?Views : 803 Replies : 7Users Viewing This Thread : |
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Mar 3rd, 2015, 00:56 | #1 |
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How to replace exhaust?
Has anyone done a diy job on the exhaust? I'm considering replacing everything behind the cat but really don't feel like getting into a world of hurt. I see a funny looking clip on the exhaust pipe right behind the cat. I'm assuming this to be the connection between cat and pipe. Does anyone know how this connection is put together? Assuming I can take it apart is there welding involved to put it back together?
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Mar 3rd, 2015, 06:36 | #2 |
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I have not done the exhaust on a Volvo but have on other cars in the past and all are quite similar. Taking apart and old one can be difficult where one pipe slots into another as rust and heat expantion makes the join very tight so sometimes a hacksaw or similar is needed. Some have used cutting wheels on a grinder but you have to think about sparks and the fuel tank so I don't do that. Cutting and/or sheering off bolts don't matter for the parts coming off anyway. Fitting the new parts is not so bad but if you are doing it on the ground with the car not very high it will be difficult anyway and another person is advised for help but it can be done alone. If you don't get injured by something slipping etc.. then the next day you will achw as you tend to use muscles you didn't know you had! If you have access to a car lift it will be easier. I'm sure there will be some youtube videos for some guidence tips also.
If you like doing your own jobs on the car then go for it, it is a PITA job but you will be happy when done knowing you didn't have to pay someone else to do it. |
Mar 3rd, 2015, 07:47 | #3 |
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You will need to remove the osr wheel to access the join and mount. The rear section passes over the axle before meeting the rear box. You have a post cat probe in the mid section which will need removing. Basically you have to assemble it under the car rather than offer it up in one piece. Did mine on a driveway on my old T4.
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Mar 3rd, 2015, 09:27 | #4 | |
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Quote:
When refitting offer up the intermediate pipe first and hang on the two hangers, then bolt the rear box to the intermediate pipe, there is no adjustment. Line the whole lot up and finally tighten the clamp at the rear of the cat. Although I changed the exhaust on my phase1 on a lift, I would happily lie on a cold concrete floor to do it if I had to. |
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Mar 3rd, 2015, 11:03 | #5 |
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Ive got a proper exhaust cutter worth getting its a chain with teeth on.also chisel helps aswell as a blowtorch they come off fairly easily.jus watch fuel tank and undercarriage when using the blowtorch .
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Mar 4th, 2015, 03:13 | #6 |
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Thanks for the replies guys. I think I'm going to try fixing the flange at junction of tailpipe and muffler one last time before ripping any pieces out. My challenge here is that the muffler itself is in great condition as is the tailpipe that it connects to. However the flanges where the two connect are rusted out. I tried unsuccessfully to pull the two pieces apart earlier in his week but I'm now ready for round 2! There is only one bolt left holding the two pieces together but it is in a bear of a tight spot. I think I'm going to take the sawsall to it and see how I fair. Assuming I can get it off I'm going to attempt putting two split flanges in on either side of the crappy rusted flanges along with the gasket and tons of muffler paste between the two pieces. I'm hoping that gives me a couple of years of use before a larger job is required. Is this wishful thinking?
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2003 V40 1.9T B4204T4, 197,000miles (sold but alive!), 2004 S60 2.5T, 160,000miles, 2010 V70 3.2, 125,000miles, 2002 V70XC 2.4, 175,000miles Click here for my x40 and V70 P3 repair guides |
Mar 4th, 2015, 06:22 | #7 |
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Loosen everything before disconnecting or cutting anything completely through
so you can still get purchase before everything starts flopping around.
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Mar 5th, 2015, 09:20 | #8 |
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As a tyre and exhaust fitter, I would certainly recommend taking it to a local tyre & exhaust centre as from experience, cars of this age require a ramp, a gas axe and a large selection of hammers to remove the old system. Fitting a new exhaust is relatively easy but removing the old one... that's what'll get 'ya!
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