Mark Posted January 26, 2008 Share Posted January 26, 2008 Whilst at Nige's this afternoon, he commented that it sounded like the exhaust blowing. The car didn't sound any different to me, but five minutes away from there, it started blowing like it didn't have an exhaust attached. :( Had to continue home with it blowing, and started to investigate... On taking the splash tray off, I looked up, into the exhaust manifold The joint above where the pipe bolts to the Manifold had completely separated! It should look like this: But it looks like this The joint below the oxygen sensor boss has compeltely come apart: So I have a few questions.... Has anybody seen this before? I have never read about it... Does anybody think there would be any harm in just welding it back together? I really need the car back together for monday, and as far as I know no-one sells Freelander Exhaust Manifolds on sundays... So I will likley re-use the gaskets too, anyone see any harm in that??? Quote Link to comment Share on other sites More sharing options...
Les Henson Posted January 26, 2008 Share Posted January 26, 2008 It's common for exhausts to break at or close to a welded joint - I would weld it back together again. Les. Quote Link to comment Share on other sites More sharing options...
Mark Posted January 26, 2008 Author Share Posted January 26, 2008 An exhaust pipe i would expect to break, but this is the manifold as I can see... Does the welding look suspect to anyone? Cheers Mark Quote Link to comment Share on other sites More sharing options...
Les Henson Posted January 27, 2008 Share Posted January 27, 2008 Looks like the weld is to one side of the joint to me. Perhaps the exhaust was only held together by interferance fit and not the weld. With re-using the gaskets, as long as they aren't damaged, then a thin layer of Fire Gum or similar will be fine. Les. Quote Link to comment Share on other sites More sharing options...
Marc1187 Posted January 27, 2008 Share Posted January 27, 2008 I see that quite often (lr main delaer). We have welded them before to get the customer on their way but i dont know how long it lasts. Quote Link to comment Share on other sites More sharing options...
Jon White Posted January 28, 2008 Share Posted January 28, 2008 Weld it up. It'll be fine. I've re-used exhaust gaskets before now without a problem. However dont use any past or gun gum on anothing upstream of the cat cos you'll kill it! Jon Quote Link to comment Share on other sites More sharing options...
Mark Posted January 28, 2008 Author Share Posted January 28, 2008 Hmmm Welded it up and put it all back together yesterday. It's a relatively easy thing to get to and work on, which was a refreshing surpise... I used a thin smear of fire putty on the mainfold gasket though... we will have to see how long the cat lasts... I asked about the gaskets, as they are a 2 layer metal type gasket rather than a composite or paper based one. I suspect that without the fire cement it would not have sealed at all. Anyone got any idea what the manifold costs to replace? I suspect that with the integrated cat it is shockingly expensive???? Cheers Mark Quote Link to comment Share on other sites More sharing options...
Mark Posted January 28, 2008 Author Share Posted January 28, 2008 £142.86 +VAT ... not as bad as I thought. will wait for it to break again now though! Quote Link to comment Share on other sites More sharing options...
cosworth Posted February 5, 2008 Share Posted February 5, 2008 common fault on these manifolds mark, right across the k series range, rover, mg and lr. if you want a laugh, rev the car from under the bonnet until hot and watch the manifold welding them back up is perfect if you can weld i`m currently building a turbo`d k using the same manifold with the same `modified` broken off cat!! Quote Link to comment Share on other sites More sharing options...
Mark Posted February 5, 2008 Author Share Posted February 5, 2008 Ah, so they are supposed to go a nice orange glowing colour then??? Seems to have remained intact for a week so far with no problems, so I guess I just need to wait for it to go again, and then weld it back together again! Quote Link to comment Share on other sites More sharing options...
cosworth Posted February 5, 2008 Share Posted February 5, 2008 i couldn`t believe how hot they got! you`d expect a turbo to glowlike that after a right good caining, but not a standard family motor!! yeah i`ve seen em last forever mate. Quote Link to comment Share on other sites More sharing options...
smarty Posted December 18, 2009 Share Posted December 18, 2009 Looks like the weld is to one side of the joint to me. Perhaps the exhaust was only held together by interferance fit and not the weld. With re-using the gaskets, as long as they aren't damaged, then a thin layer of Fire Gum or similar will be fine. Les. I agree with Les as a welder of 15 years. Quote Link to comment Share on other sites More sharing options...
D-lander man Posted December 18, 2009 Share Posted December 18, 2009 I've replaced four manifolds in the last month. They are always seperating! (Only replaced them as they were under warranty). If it was my own i would weld it! Quote Link to comment Share on other sites More sharing options...
defv890 Posted December 19, 2009 Share Posted December 19, 2009 hi the most common cause of repeat failure of the manifold us usualy the lower engine mount worn out and excessive engine movement & crackes the weakest point the weld joint. Quote Link to comment Share on other sites More sharing options...
Mark Posted December 19, 2009 Author Share Posted December 19, 2009 Well, since i posted originally, nearly 2 years ago, the repair has held, and never been an issue since. We sold the car a short while ago, so it will not be concern of ours, but I can't see it being an issue again. Quote Link to comment Share on other sites More sharing options...
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