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Silencer preservation suggestions

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wizz:
A hole about 10mm x 5mm has just appeared on the underside of my OEM honda silencer caused i presume water sitting internally  near the front weld seam which seem to be a low point in the silencer, when i started it the other day i notice a fair bit of water under the silencer, on having a closer look i could see water spraying out of a pin pricked sized hole, stuck my nail on it a before i knew it had a 10x15mm hole. obviously i want to try a stop things from getting worse as the rest of the pipe is really nice so any suggestions as to how i can do this and repair the hole
cheers       

LesterPiglet:
My only suggestion is to braze a plate over it if it isn't normally visible. Do those silencers have drains in them?

wizz:
just the one but its not where all the water leaked from so whatever i do i will make sure there is a small drain hole left, would brazing cause any discoloration to the chrome 

meerkat:

--- Quote from: wizz on April 22, 2012, 11:00:34 PM ---would brazing cause any discoloration to the chrome

--- End quote ---
Yes it will.
You could try placing pieces of copper (pipe or plate) on the silencer near the heating zone to transfer heat away from the area. Or I would opt for silver soldering (not lead solder) with the smallest gas flame possible to make the join. Tin the patch first away from the silencer then apply the patch to the hole and gently re-heat for the best chance of success. Don't direct the heat into the silencer at 90 degrees, angle the torch away from the chrome to keep the heat to the minimum required. Halfords sell a good chrome type paint (plasti-kote) to paint the patch with later.

Tomb:
+1 on the silver solder, that way you can use a stainless steel patch, and polish it up after.

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