Omega Owners Forum
Chat Area => General Car Chat => Topic started by: 4x4 on 23 August 2014, 19:00:04
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After finally getting exhaust sorted and changed today,the fitter commented i had a blowing joint on the cat to middle box,ive done this joint several times and it still didnt seal correctly,so the fitter told me to use a high temp rtv silicone,i finally decided to do it an hour ago as was bored,checked the rtv i had was useable upto the higher temps and it was,so redid joint using rtv and it worked a treat,exhaust leak free system now,top tip for the day :y :y
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Nice one :y
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Ordinary clear silicone works on exhausts if you're in a hurry. Or a bodger. Or just cheap.
It's got to be clear though, as the pigment in coloured silicone is what burns.
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After finally getting exhaust sorted and changed today,the fitter commented i had a blowing joint on the cat to middle box,ive done this joint several times and it still didnt seal correctly,so the fitter told me to use a high temp rtv silicone,i finally decided to do it an hour ago as was bored,checked the rtv i had was useable upto the higher temps and it was,so redid joint using rtv and it worked a treat,exhaust leak free system now,top tip for the day :y :y
o dear wait for the abuse and derishion, from some. Ive said about silicone for years,but been called names. :'(
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Silicone shouldn't be used BEFORE the cat cos silicone and o2 sensors don't get along.
After thecat though no problem.
I got the black RTV and will give this a try as I cant get mine to seal properly either :y
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Ordinary clear silicone works on exhausts if you're in a hurry. Or a bodger. Or just cheap.
It's got to be clear though, as the pigment in coloured silicone is what burns.
Black smoke from underneath the 4x4 for a while then :o :D
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I always make a mess with silicone..... :(
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I always make a mess with silicone..... :(
Anything long and soft you make a mess with. I find a moist finger helps. ;D
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I always make a mess with silicone..... :(
Anything long and soft you make a mess with. I find a moist finger helps. ;D
Wipe on, wipe off... ;D
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I've had a lot of luck with that exhaust repair paste (the stringy stuff, not fitting paste) that is dirt cheap on Halfords trade. It won't hold where a pipe has rusted off the box, but if its that bad, it needs a new exhaust anyway.
If its a poor fitting at a tapered joint, its either poor fitting, or incredibly poorly made exhaust. These should only need a small smear of fitting paste, but must be on the taper, not applied after fitting together.