Om636 heat exchanger broken, flooded boat

[Ardenfour]

Arrived back on mooring today, went down into the main cabin to put the kettle on. Wondered why my feet were getting wet. The floorboards were floating! Ripped off the engine cover and its almost submerged. After pumping it out I fired the engine up and loads of seawater spraying out from around the raw water inlet on the manifold. Part of it had broken off. It appears to be some kind of alloy, is it possible to weld this? It's a Bowman heat exchanger.

 

[penberth3]

Arrived back on mooring today, went down into the main cabin to put the kettle on. Wondered why my feet were getting wet. The floorboards were floating! Ripped off the engine cover and its almost submerged. After pumping it out I fired the engine up and loads of seawater spraying out from around the raw water inlet on the manifold. Part of it had broken off. It appears to be some kind of alloy, is it possible to weld this? It's a Bowman heat exchanger.

So you've got something so badly corroded it's fallen apart? Welding won't work.

 

[Ardenfour]

So you've got something so badly corroded it's fallen apart? Welding won't work.

Mmmm. I'll need to get it off, see how bad it is.

 

[Boater Sam]

You can't weld rubbish and corrosion back together.

 

[Refueler]

I hope your engine survives .....

My Perkins 4-99 - boat flooded while on shore - about level with crankshaft pulley centre ... due drains blocked ...

We pumped out boat ... drained engine sump and refilled with fresh oil ... visually checked engine as far as possible .. all seemed good.

Engine started fine .. had a couple of runs to check .. but then weekend at Folly Inn (IoW) ... engine was seized ... never to run again.

 

[Ardenfour]

Update, manifold repaired using metal epoxy putty. Reinstalled and running fine with no leaks. Will keep an eye on it, but have sourced a replacement, combined manifold, which i plan to fit over the winter. Will require some pipework alterations.

 

[Refueler]

Update, manifold repaired using metal epoxy putty. Reinstalled and running fine with no leaks. Will keep an eye on it, but have sourced a replacement, combined manifold, which i plan to fit over the winter. Will require some pipework alterations.

Plastic Metal ..... been a saviour more than once for me !

Start of a 10 day Baltic cruise (2011) .. core plugs (2) in my Perkins decided to give out while motoring down river to harbour ... Tied up to town quay .. nip to car shop .. couple of tubes of plastic metal ...
Decent sized lump kneeded and then pressed into each of the blown plugs ... Waited a bit .. started engine ... all good.

After the cruise - bag of core plugs arrived of eBay ... job done.

Years later one plug corroded and failed ... having lost the bag of plugs !! I took a disc of foam sheet and fitted to the 'blown' plug ... then a decent lump of plastic metal kneeded and pressed in. That's was there for about 2 yrs ... and it showed no signs of failing. Eventually I replaced it ..

Needless to say - I carry a couple of tubes of plastic metal !