30 year old boat springs leak help?

[coverup]

any one know anything to do with volvo penta engines for birchwood cruiser we have sprung a leak in the metal exhaust pipe and they do not supply any more. the problem being that a suggestion was made to replace with a complete armoured hose but i am abit wary of this as it might be dangerous as it heats up any suggestions please

[Pete Cooper]

Is the leaky pipe in a place where you can cut it out to replace with a straight section? If so get a piece from a local exhaust supplier that has the same inside diameter as your existing pipe. Cut a coule od slots into each end, then clamp that in place using standard exhaust clamps. If it is a bent piece of pipe, try and remove it in one piece, take it to an exhaust manufacturer(Yellow Pages) and see if thay can copy it. Failing that you can buy flexible hose designed for use as exhaust so that might do.
Other options are a firm called http://www.keypart.com" onclick="window.open(this.href);return false; - they do lots of Volvo spares, or have a look on eBay.
Good luck, Pete.

[coverup]

Is the leaky pipe in a place where you can cut it out to replace with a straight section? If so get a piece from a local exhaust supplier that has the same inside diameter as your existing pipe. Cut a coule od slots into each end, then clamp that in place using standard exhaust clamps. If it is a bent piece of pipe, try and remove it in one piece, take it to an exhaust manufacturer(Yellow Pages) and see if thay can copy it. Failing that you can buy flexible hose designed for use as exhaust so that might do.
Other options are a firm called http://www.keypart.com" onclick="window.open(this.href);return false; - they do lots of Volvo spares, or have a look on eBay.
Good luck, Pete.

the exhaust is bent at the top my worry is that if i use a hose the heat might compromise it as it is the longest part of the exhaust right at the bottom and the heat might cause it to sag but if you say that flexi hose for exhaust might work on boat thanks for your suggestions let you know how i get on anne

[Pete Cooper]

If using flexible exhaust hose you will need to ensure that it is well supported - if it can flap around too much it will not last.

[sahona]

Assume yours is similar to mine, with the water being injected some distance away from the engine.
Just to set your mind at rest, I've had a couple of installations using "dry" metal exhaust up to the "U" bend where the mixing takes place.
On the VP, it took the form of plaited wire armour in layers, similar to that used in some cars between the manifold and first solid section of exhaust (eg. rover 825D).
On the current 4108, it is iron spiral flexible pipe covered in asbestossy bandage. Both have been installed for years (possibly 30?) and are still good, the secret being (I think) that the salt water is introduced later in the circuit and only wets rubber hose between the Utube and skin fitting.
Should last for years, being internally coated with nice oily fumes.....
(Am I allowed to talk to a mobo on here?)

[coverup]

Assume yours is similar to mine, with the water being injected some distance away from the engine.
Just to set your mind at rest, I've had a couple of installations using "dry" metal exhaust up to the "U" bend where the mixing takes place.
On the VP, it took the form of plaited wire armour in layers, similar to that used in some cars between the manifold and first solid section of exhaust (eg. rover 825D).
On the current 4108, it is iron spiral flexible pipe covered in asbestossy bandage. Both have been installed for years (possibly 30?) and are still good, the secret being (I think) that the salt water is introduced later in the circuit and only wets rubber hose between the Utube and skin fitting.
Should last for years, being internally coated with nice oily fumes.....
(Am I allowed to talk to a mobo on here?)

what is a mobo

[Pete Cooper]

Mobo is a term for a motor boat owner - Sahona is 70% Mobo, and 20% Raggie(a similar term for a sailing yacht) - the other 10% is conservatory!

[Booby Trapper]

Mobo is a term for a motor boat owner - Sahona is 70% Mobo, and 20% Raggie(a similar term for a sailing yacht) - the other 10% is conservatory!

He's not going to like that

[sahona]

Well Pete, not any more...
The flex coupling flew apart when I picked up a rope on the prop on launch day so no mobo.
I think the prob is rammed into the rudder and the shaft bent.
Couldn't afford the fuel anyway.
The conservatory windows disintegrated when I fitted the spreader for the crane, so that's gone as well.
We're a yot, so there.

[coverup]

ok i get it i forgiv you,s yotys then thanks for all your help if i do not get mt exhaust repaired i will attach a sail and be one of the gang eh

[Bodach na mara]

The flex coupling flew apart when I picked up a rope on the prop on launch day so no mobo.
I think the prob is rammed into the rudder and the shaft bent.
Couldn't afford the fuel anyway.
The conservatory windows disintegrated when I fitted the spreader for the crane, so that's gone as well.

I think that qualifies as a right bummer of a start for the season Bill.