rubber exhaust repair?

[trowell]

is there something I can use to repair my newish Vetus rubber exhaust. The boat yard engineers tha tinstalled the engine have failed to noticed a protruding screw which has, over the season, worn a small hole into the rubber. It doesn't appear to have gone all the way through so far.

Surley there must be some kind of vulcanising goo and a suitable patch that would solve the problem or is this, perhaps, asking for trouble, in which case should I confront the boat yard responsible? any replies much appreciated.

 

[MoodySabre]

I'd mention it anyway. If they offer a repair then get them to guarantee it. If it is just on the outside layer then a repair could be OK - if it has gone deeper then I'd look for a replacement.

 

[V1701]

I'd have thought a car exhaust bandage would do it (Holts)...

 

[prv]

I'd have thought a car exhaust bandage would do it (Holts)...

Isn't that meant for metal exhaust pipes?

Pete

 

[Tradewinds]

Salty John of this parish sells Bandit silicone repair tape which is down as being suitable for exhaust hose repairs.

 

[V1701]

Isn't that meant for metal exhaust pipes?

Pete

Well yes but it will (presumably) be heat proof and as there isn't actually a hole in the exhaust (yet) and as long as something's done about the offending screw then I would have thought that it would do the job...

 

[Leonidas]

is there something I can use to repair my newish Vetus rubber exhaust. The boat yard engineers tha tinstalled the engine have failed to noticed a protruding screw which has, over the season, worn a small hole into the rubber. It doesn't appear to have gone all the way through so far.

Surley there must be some kind of vulcanising goo and a suitable patch that would solve the problem or is this, perhaps, asking for trouble, in which case should I confront the boat yard responsible? any replies much appreciated.

Maybe worth talking to a tyre repair shop. Some time ago, I had a slow puncture in a tubeless tyre caused by a rogue nail . The repairer used a tool that resembled a carpet needle to pull a rubber conical plug through the hole and finished it off with some rubber glue. This repair is still holding well. In your case obviously you will need to insert from the outside. But as there is no pressure to worry it may be worth considering it if the repairers are not prepared to renew the rubber pipe which of course is a better job.

 

[ianat182]

You could try self-amalgamating tape that I believe is sometimes used for repair to car radiator hoses; if water- cooled the temperature should be reasonably low enough to adhere, but not sure about neoprene rubber if that is the exhaust material here.

ianat182

 

[Chris_Robb]

Maybe worth talking to a tyre repair shop. Some time ago, I had a slow puncture in a tubeless tyre caused by a rogue nail . The repairer used a tool that resembled a carpet needle to pull a rubber conical plug through the hole and finished it off with some rubber glue. This repair is still holding well. In your case obviously you will need to insert from the outside. But as there is no pressure to worry it may be worth considering it if the repairers are not prepared to renew the rubber pipe which of course is a better job.

A bicycle puncture repair kit????

 

[Ardenfour]

A car exhaust repair bandage relies on the heat of the exhaust to harden and set. A rubber exhaust will never get hot enough, and if wet will merely turn the compound into a mushy paste.

 

[david_bagshaw]

If the installer wont replace it I would put a good quantity of sikkaflex on a plastic bag, so it stays in place as it cures and place over the damaged area, so if it does eventually wear through from the inside it will meet rubber.

 

[Spyro]

You could get another 3 or 4 inch section of exhaust hose slice it long ways and place over the worn part and clamp on with a couple of jubilee clips. For even more piece of mind stick it down with some vulcanising glue from a bicycle tyre repair kit.

Or you could just wrap it it self amalgamating tape. It should not get too hot or it wouldn't be rubber.

 

[PCUK]

Alternatively a piece of metal pipe. Cut the hose and rejoin it in the normal manner.

 

[KINGFISHER 8]

That Bandit tape from Salty John will do it ... or buy a new pipe - tight bugger!

 

[Leonidas]

A bicycle puncture repair kit????

No, it was a car tyre repair kit.
I suspect that if one was to screw in the hole a self tapping screw (of slightrer larger gauge than the one that caused the perforation) covered in rubber glue, it should do the trick.

 

[Billjratt]

If it's just a wee scratch, you could try inpregnating cloth tape (like old-fashioned insulating tape) with something like sikaflex to reinforce the existing fabric armour.
If it's gone through past the steel wire to the actual rubber hose then PCUK has the right idea I think. You could even use an inline silencer for added peace while motoring.
You certainly don't want to do anything that is less than 100percent, as a boat full of exhaust water and fumes is disorientating, frightening and an avoidable nuisance.

 

[Hoolie]

You could use silicone liquid gasket compound - I can't remember the name but you can get it at Halfords. I think it will stand up to 250 degrees and it's quite adhesive so will fill the hole in your exhaust.
I've used it on the engine camshaft retainer and the calorifier with no probs at all.