messcortmk6

well its not a hole its a leak, i now have a new back box on my car, was made to fit as has a 3" tail pipe and a stainless cat back. but on the seal between the centre pipe and the rear box a small leak keeps breaking through the seelant, i been using fire gum to seal it and have had it apart and together about 5 times. just so annoying as i can hear it fizzing when i pass parked cars or buildings.
not loud just can hear it and MOT soon.

i have sealed the inside then put the clamp real hard, but still finds a way to leak out of the same dam bit!!!!!

can i please have some advice or shall i use a better seelant? thanks for your help.

Lee_R21Turbo

iTrader: (1)

Can you not use a proper gasket between the two faces instead of sealant!!!?

messcortmk6

centre pipe and rear box, there is no gasket that goes there the gasket goes on the manifolds to head or the cat to centre pipe.

messcortmk6

the centre to reax box is where the is a smaller pipe with another same sized pipe that has a 'flared' end on it so they slode tgether.

Lee_R21Turbo

iTrader: (1)

....and I take it you've clamped the two together using an exhaust clamp???

messcortmk6

yep with the seelant stuff inside so the bond together nicely. but the same place finds its way through

cossie04

iTrader: (1)

Exhaust Wrap???

messcortmk6

and what will exhaust wrap do to help?

bai1ey

use chemical metal mate shud do the job and look prezentable sorry about spelling i am not good at it.

RichieST

iTrader: (2)

thing is tho with anything like chemical metal, it will work, but you will never get the thing off again!!! It should be a pretty tight fit with no sealant on it anyway. If it isnt, then as v6edc says, get a bit of exhaust wrap to put round the smaller pipe to beef it up a bit, then plenty of paste, nice and tight on the exhaust clamp, and that thould have it sealed up good

messcortmk6

would it be best to put paste on then put the wrap round that? or the other way? or does it not matter. ill give it a go tomorrow, got mu halfords trade card today so get it a bit cheaper. happy!!!!!