Guest ugp Posted January 13, 2012 Share Posted January 13, 2012 Exhaust manifold mate, by the sounds of it, right near the top too. As for oil around the dizzy, thats a seal leaking, I wouldn't worry too much about it, mine leaked for 20k. Quote Link to comment Share on other sites More sharing options...
neo2810 Posted January 13, 2012 Author Share Posted January 13, 2012 Lol... Apologies, the piston title was just to generate interest, although I did think it was something worse than an exhaust seal. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 13, 2012 Share Posted January 13, 2012 One of the two pipes from the manifold flange into the first cat has cracked. It'll probably be the one with the flexi bellows in it. If you remove the cat you can get a good stainless welder to clean the crack out and TIG or MIG it up and it will be fine. If you can't find anyone local I can do it, I've done loads of them. Elementary my dear fellow. Oh, and I have the O rings in stock to repair the disi leak. Quote Link to comment Share on other sites More sharing options...
Tyson Posted January 13, 2012 Share Posted January 13, 2012 (edited) Lol... Apologies, the piston title was just to generate interest, although I did think it was something worse than an exhaust seal. You should have just titled it new female member Edited January 14, 2012 by Tyson (see edit history) Quote Link to comment Share on other sites More sharing options...
neo2810 Posted January 14, 2012 Author Share Posted January 14, 2012 Chris, cheers bud,I'll have a gander tomorrow. The exhaust is only about 12 months old but I guess they would blame it on impact and I'd have no recourse? Quote Link to comment Share on other sites More sharing options...
Morpheus Posted January 14, 2012 Share Posted January 14, 2012 Chris, cheers bud,I'll have a gander tomorrow. The exhaust is only about 12 months old but I guess they would blame it on impact and I'd have no recourse? Have you grounded the exhaust on anything lately then? I had a similar noise from my Granada 2.8i years ago from scraping a baffle box on a concrete ramp and it split the sheet metal bit. Needless to say, applying packing tape to it didn't last long but it got me home without waking half of Aldershot! Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 14, 2012 Share Posted January 14, 2012 A split in the cat is nothing to do with the exhaust, the new exhaust will be after both cats. The cats will be as old as the car, so it's just old age and poverty that's caused it. Quote Link to comment Share on other sites More sharing options...
Dnk Posted January 14, 2012 Share Posted January 14, 2012 Kamal had a similar problem and it was a bung that had come out of a hole in the manifold which used to have an egt sensor in it. Sounded just like your video (blowing exhaust noise) Quote Link to comment Share on other sites More sharing options...
supraGZaerotop Posted January 14, 2012 Share Posted January 14, 2012 2nd that , exhaust mateIts the exhaust dude, trust me. Quote Link to comment Share on other sites More sharing options...
Guest ugp Posted January 14, 2012 Share Posted January 14, 2012 Have you still got the full AAS exhaust on it Tony? I thought they made a custom manifold, de catted it etc? Might be worth checking the o2 sensor as mentioned above, I've seen a sensor blown out of the bung (albeit on an MGF). Ben Quote Link to comment Share on other sites More sharing options...
neo2810 Posted January 14, 2012 Author Share Posted January 14, 2012 I'll be having a proper look shortly (once I've motivated my butt to get a shower)... Chris, mine's a straight through custom exhaust and manifold so I can't see it being a split since I've not hit anything recently. It's possible one of the senser bungs has popped or the manifold gasket blown. I'll know more shortly. Quote Link to comment Share on other sites More sharing options...
neo2810 Posted January 14, 2012 Author Share Posted January 14, 2012 (edited) Here we go... I've had a good look and can't see anything obviously wrong with either the exhaust or the O2 sensors (the rubber sheath around the wire slips up and down it but the sensor is secure in the input hole). The sound is worst at the bit I've circled, near the left side of the manifold join to the block but the bolts are all solid (on hand test), the seal looks good and the manifold has no play. However, there are 2 areas on the block where a bolt may have worked loose. The first is below (although looks like it's been like that for ages) The 2nd (which is shiney inside so looks to be a newly exposed thread) on the transmission bell housing although that may belong to the original exhaust setup: Any further ideas? Edited January 14, 2012 by neo2810 (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 14, 2012 Share Posted January 14, 2012 OK, scrub all I said, I assumed it was on a stock manifold with the first cat in place. Now I see it's a tubular manifold with the support bracket to the bellhousing missing, it may still be a crack, somewhere in the manifold, or a blow at the manifold to head flange gasket, or the manifold to rest of the system flange gasket. It's dead easy to find the blow, just get a 3 foot length of rubber hose pipe and hold one end to you ear and poke about with the other end until you hear the leak. The holes in the block and bellhousing are nothing to do with your problem. Quote Link to comment Share on other sites More sharing options...
neo2810 Posted January 14, 2012 Author Share Posted January 14, 2012 Thanks Chris, I'll try the hose trick and see if I can pinpoint the source. The damn manifold gets hot within 30 secs though so will not have much time Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 14, 2012 Share Posted January 14, 2012 I have never heard a rubber hose scream "You've burnt me", go for it mate. Quote Link to comment Share on other sites More sharing options...
Morpheus Posted January 14, 2012 Share Posted January 14, 2012 When I was a small boy my father taught me how to find inner tube punctures by putting them in a bowl of water to see where the bubbles came out. Seriously, start the engine from cold and use a spray bottle of water to soak the manifold area before it gets hot. Quote Link to comment Share on other sites More sharing options...
neo2810 Posted January 14, 2012 Author Share Posted January 14, 2012 Both good ideas. I'll attack the bugger armed with hose and spraygun. Quote Link to comment Share on other sites More sharing options...
Morpheus Posted January 14, 2012 Share Posted January 14, 2012 I have never heard a rubber hose scream "You've burnt me", go for it mate. You have to open your third eye and become one with the hose Chris. I read that in 'Zen and The Art of Hosepipe Maintenance'. So began my long and arduous journey of spiritual enlightenment through the foothills of the Himalayas, in search of The Truth. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted January 14, 2012 Share Posted January 14, 2012 As Chris said its almost certainly a cracked weld on the manifold. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 14, 2012 Share Posted January 14, 2012 Or a warped flange, probably head to manifold flange as it's long, undivided and possibly too thin for the thread to plain shank length of the stock head studs without thick washers. I suspect that even torqued up the nuts are not clamping that manifold properly.. Quote Link to comment Share on other sites More sharing options...
Kirk Posted January 14, 2012 Share Posted January 14, 2012 I have never heard a rubber hose scream "You've burnt me", go for it mate. Quote Link to comment Share on other sites More sharing options...
neo2810 Posted January 14, 2012 Author Share Posted January 14, 2012 Or a warped flange, probably head to manifold flange as it's long, undivided and possibly too thin for the thread to plain shank length of the stock head studs without thick washers. I suspect that even torqued up the nuts are not clamping that manifold properly.. Chris, if that is the case, what can be done? Quote Link to comment Share on other sites More sharing options...
Guest ugp Posted January 14, 2012 Share Posted January 14, 2012 Get it skimmed? Quote Link to comment Share on other sites More sharing options...
adnanshah247 Posted January 14, 2012 Share Posted January 14, 2012 Its the exhaust dude, trust me. Jamies right, that's the exhaust or a cracked manifold. Quote Link to comment Share on other sites More sharing options...
Dnk Posted January 14, 2012 Share Posted January 14, 2012 Get it skimmed? Not a good idea if its already a bit on the thin side Quote Link to comment Share on other sites More sharing options...
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