Joining two lengths of 51mm ID exhaust hose

Georgio

Georgio

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I have to replace the exhaust through-hull fitting and swan-neck and the existing hose (in good condition) is a bit too short.

Ideally I want to extend it a short length (ASAP do cheaper offcuts) but I can't find a joining piece to do this, the largest on from ASAP is 40mm.

Is it a bad idea to join to lengths of hose? any idea where I can get a connector?
 
I might have preferred a metal joining piece, but that one seems to have been made for this specific purpose so I guess it's ok.

Pete
 
At the risk of thread drift...

The last time I had to replace some exhaust hose, I could not believe what an exhausting (sic) process it was to get the new hose onto the exhaust through-hull fitting. Hanging upside-down in a cockpit locker with a flickering light, trying to force the new hose onto the fitting, was not much fun. Heating the end of the hose in hot water made it a little less painful.

At the time, I thought there must be an easier way to do this.
If anyone does knows of an easier way, PLEASE can you share it with us?
 
Boreades said:
At the time, I thought there must be an easier way to do this.
If anyone does knows of an easier way, PLEASE can you share it with us?
Click to expand...

A hot-air gun allows you to warm up the fitting as well, so that the hose isn't instantly cooled and re-stiffened when it touches freezing metal.

Also, Wickes sell silicone lubricant fluid intended for assembling rubber-jointed soil pipes, which can ease insertion (fnarr fnarr).

But it's still not a fun job.

Pete
 
I had a tiny pinhole a few years ago and had to mend it whilst away from home.

I was surprised by the pressure in there, it took a great deal of mending, with multiple layers of heavy tape interleaved with silicone. In an ideal world I should consider replacing the whole run. Any leak will fill the bilge more quickly than you might imagine, it impressed me anyway.
 
You can get metal joiners via the motor sport trade, e.g. Merlin at Castle Combe.
You can get them made any length with a proper bead formed on.
Opportunity to add overheat alarm?
 
When I replaced the engine on my previous boat I made my own from a 4" off-cut length of rigid plastic water pipe with a wall thickness of around 6mm. (not sure whether it was 1-1/2 or 1-3/4 BSP). Turning the outside diameter to size took less than 10 minutes. If there are some model engineers in your area they could easily do it for you on even a light lathe.
No problem with plastic; the water trap is also plastic anyway.
 
doug748 said:
I had a tiny pinhole a few years ago and had to mend it whilst away from home.

I was surprised by the pressure in there, it took a great deal of mending, with multiple layers of heavy tape interleaved with silicone. In an ideal world I should consider replacing the whole run. Any leak will fill the bilge more quickly than you might imagine, it impressed me anyway.
Click to expand...
Yes filling the bilge with exhaust gas is not a fun thing and if as in many boats it runs near sleeping area leathal
 
Connectors are available from Vetus in all common sizes from 40-150mm. Code SLVBR. See page 89 of catalogue.
 
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