jimmyslr Posted October 25, 2003 Share Posted October 25, 2003 My exhaust is leaking a bit where the primaries join the 4-2-1 collector thingy just outside the body. Tried some exhaust sealant from local autofactors, but gave up after a week or so. Someone mentioned copper bases silicone RTV (I think that was the stuff) as being the solution as it's more flexible. Anyone know where to get it? I get blank looks from Halfords et al. Link to comment Share on other sites More sharing options...
Swiss_Tony Posted October 25, 2003 Share Posted October 25, 2003 Normal automotive silicone sealant works a treat. James Su77on Se7ens Link to comment Share on other sites More sharing options...
Allan Haighton Posted October 26, 2003 Share Posted October 26, 2003 Or high temperature silicone. See the Screwfix catagolue Link to comment Share on other sites More sharing options...
Grim Reaper Posted October 27, 2003 Share Posted October 27, 2003 I have some Copper based RTV, the unfortunate thing is that I got it in Canada. I'll dig it out when I get home and give you some details off it. Link to comment Share on other sites More sharing options...
Big Brother Posted October 27, 2003 Share Posted October 27, 2003 Out of interest - what does RTV stand for? Steve Se7en-Up! Magnolia - its the new BRG/Yellow! 😬 Link to comment Share on other sites More sharing options...
oilyhands Posted October 27, 2003 Share Posted October 27, 2003 Room Temperature Vulcanising Oily Link to comment Share on other sites More sharing options...
Frying Pan Posted October 27, 2003 Share Posted October 27, 2003 RTV : An abbreviation of Room Temperature Vulcanizing means vulcanizing at room temperature and is a common designation of liquid silicone rubbers. So now we know Oily beat me to it! Edited by - 7heavensoon on 27 Oct 2003 16:07:53 Link to comment Share on other sites More sharing options...
Slomove Posted October 27, 2003 Share Posted October 27, 2003 I had some pretty wide gaps in the header joint and tried at least 5 different methods to get it sealed (short of welding) including regular and copper silicone. So far no sealant held up. Maybe it would if I had sanded the surfaces down to bare and shiny metal but the remaining thin carbon deposit made the sealant not stick and blow out. I ended up with external packing (glass-fiber "tadpole" tape), wrapped in aluminium adhesive flue tape, and held in place on the joints by hose clamps. Gert Link to comment Share on other sites More sharing options...
Big Brother Posted October 27, 2003 Share Posted October 27, 2003 Room Temperature Vulcanising Cheers guys Steve Se7en-Up! Magnolia - its the new BRG/Yellow! 😬 Link to comment Share on other sites More sharing options...
Grim Reaper Posted October 28, 2003 Share Posted October 28, 2003 The Stuff I have is Permatex Ultra Copper,good for 700F (371C),safe for use with sensors,sticks very well.recommended for inlet and exhaust manifolds. Link to comment Share on other sites More sharing options...
Captain Beaky Posted October 28, 2003 Share Posted October 28, 2003 Try " Dow Corning Plumba Flue" i use it for commercial boiler flues and casings , about £5 a tube from any Plumb Centre. Link to comment Share on other sites More sharing options...
CHRIS CLARK Posted October 28, 2003 Share Posted October 28, 2003 I can second Capt Beaky's recommendation. Mathew Aves pointed me in that direction sometime back. It works a treat and has a higher than normal 'top' temp.! Clamshell Club Founder Member. Link to comment Share on other sites More sharing options...
jimmyslr Posted October 28, 2003 Author Share Posted October 28, 2003 I still fancy the copper based high temperature stuff as it seems the product designed for the job rather than one that manages ok. Question remains as to where???? Link to comment Share on other sites More sharing options...
jimmyslr Posted October 28, 2003 Author Share Posted October 28, 2003 Chris - which one are you seconding? Link to comment Share on other sites More sharing options...
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