Doug Posted March 31, 2004 Share Posted March 31, 2004 I have just bought a Raceline 2.0ltr Zetec which I am steadily and very enjoyably getting to know. One problem appears to be the joints between where the exhaust comes out of the side of the car and joins onto the silencer. Four pipes come out of the side of the body and push fit into four female pipes, which then reduce to one pipe into the silencer. The whole lot is made in stainless steel. The blowing area is where the four pipes push together. The pipes quite literally push into each other and a bolt on a flange at 90 degrees to the pipes keeps them from pulling apart. It sounds odd but it works. Someone has suggested using silicone sealer on the male pipes and pushing them together to make the seal. I haven't done it yet for fear of making a mess of the stainless steel pipes if it doesn't work. Any suggestions are very gratefully received. Link to comment Share on other sites More sharing options...
Tony C Posted March 31, 2004 Share Posted March 31, 2004 Aahhh - silicone would make a BIG mess. If the leak is very bad, and they always leak from this joint slightly, try GunGum from any car parts place. It's made for the job and is easy to use 😬 BRG Summertime Brooklands SV 😬 It is only with the heart that one can see rightly; what is essential is invisible to the eye. (Antoine de Saint-Exupery) Link to comment Share on other sites More sharing options...
wonkey eyed barmaid Posted March 31, 2004 Share Posted March 31, 2004 ive sealed my 4-1 collector a few times. it doesnt seem to last long though, and it needs doing again. there must be a lot of movement transmitted through the exhaust because of the motion of the engine. anyway, high temp silicone will seal it fine, as will firegum or exhaust putty. if you get excess silicone on bits of the exhaust you dont want it on, just wait till it dries and it should peel off fairly easy. as for firegum; if you get that smeared on the exhaust, a high grade wet and dry paper will rub it off without making a mess. Link to comment Share on other sites More sharing options...
Super_Rich_Bernie Posted March 31, 2004 Share Posted March 31, 2004 Mine has some chopped up beer can wedged into one pipe to take up the gap between inner and outer pipes, plus silicone. Worked for a while but blowing again now. Jonathan Link to comment Share on other sites More sharing options...
prs Posted March 31, 2004 Share Posted March 31, 2004 I've always used silicone sealant on my powerspeed and have not noticed any blowing around the joints. Phil S7SVN Link to comment Share on other sites More sharing options...
caterhamnut Posted March 31, 2004 Share Posted March 31, 2004 Where can one get the high temp silicone sealant? I have always 'shimmed' the gaps in mine, but it is bever really satisfactory. NEW Nurburgring Pictures posted here 55,000miles in 2.5 years Link to comment Share on other sites More sharing options...
Tony Whitley Posted March 31, 2004 Share Posted March 31, 2004 You can get it from any plumbers merchant I think Angus - that's where I got mine from. Used for sealing flues IIRC. I shimmed mine with a coke tin following your suggestion AND applied silicone sealer (what a literally bloody and messy job that was - with red sealer all over my fingers I didn't realise I'd slashed a finger on the coke tin ) and STILL one of mine blows M1 7 SMW R200 (aka 1.4SS) Mem.No. 10376 Link to comment Share on other sites More sharing options...
CageyH Posted March 31, 2004 Share Posted March 31, 2004 What's wrong with exhaust assembly paste? Does it just blow out? Link to comment Share on other sites More sharing options...
David Morris Posted March 31, 2004 Share Posted March 31, 2004 I had the same problem on my eh hum...w*******d and the factory told me to use 'Plumba' flue sealant which is a high temp silicone. It only lasted a few hundred miles though before it was gone and needed redoing. I returned to the factory recently to be told that mine was the 'old' design and the new ones were welded. I have since had mine welded...brill!! no blowing. Link to comment Share on other sites More sharing options...
Big Brother Posted March 31, 2004 Share Posted March 31, 2004 Exhaust assembly paste dries and becomes brittle. It then powders away. High temp sealer stays pliable, so seems to last longer. Anyway, a bit of an air leak in the collector does allow for some nice flames on the over-run Steve Se7en-Up! Not going to you know where with you know who in 2004 😬 Link to comment Share on other sites More sharing options...
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