BUKH DV24 ME - Can they be rebuilt once they have run away?

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I have a Bukh DV24 ME in my Westerly Konsort. It ran away and did a lot of damage internally. The engine was new in the year 2000 and had relatively few hours on it. Can I rebuild it using second hand parts, such as a new head, rocker assembly, push rods, piston etc? If so, does anyone know where i can get second hand parts for a Bukh and on a budget, rather than Bukh prices? I've done the obvious ones like ebay but hoping a little bit of luck and word of mouth might help. I'd be grateful for your help!:o
 
http://www.ebay.co.uk/itm/bukh-dv20...tEquipment_Accessories_SM&hash=item2ecf19175f

Don't know if you would want to go for salvage parts on the bottom end but replacement head and valve gear would be viable. Champagne Murphy of this parish rebuilt a DV20 and posted about it on here. Maybe PM him for further advice.

Rob

Edit: The following post may be worth a read in full

http://www.ybw.com/forums/showthread.php?337813-Engine-re-spray&highlight=Rebuilt+dv20


Also another possible contact

http://www.boatsandoutboards.co.uk/...-dv24-and-dv36-marine-diesel-engines-PAA86261
 
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Unfortunately the dv20 head is different from the dv24 as the 20 is indirect injection while the 24 is direct. I don't think there is much difference other than this and the mounting arrangement is identical as is the exhaust and shaft rotation.
 
Why did it run away? - Broken rings? worn bores? (unlikely), Oil leak through head gasket?....???
I would call Bukh UK and speak with Al Pearson / Norman Griffiths on 01202 668840 - they may be sympathetic and point you in the direction of "cheap spares"
At 13 tears old the engine is probably not even run in yet hence my question as to why she ran away in the first place.
 
Wandering Star said:
Excuse my ignorance - what does "it ran away" mean? I've a Bukhara DV24 in my V27 so I'm keen to know what we're discussing here!!
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A diesel runs away when it starts consuming it's own oil as fuel.It' won't stop until all the oil has been burnt.It is caused by wear in the bores/rings or valve guides that allows the oil to enter the combustion chambers.

 
30boat said:
A diesel runs away when it starts consuming it's own oil as fuel.It' won't stop until all the oil has been burnt.It is caused by wear in the bores/rings or valve guides that allows the oil to enter the combustion chambers.

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Many years ago I fitted a hydraulic pump to a Lister Diesel - unfortunately we had been supplied with an incorrect pump rotation so the seal blew as soon as the pump was operated which pumped hydraulic oil into the engine which then 'ran away' - very frightening as the workshop was filled with white smoke and I only stopped the engine by yanking off the airfilter and putting my hand over the inlet.
 
PetiteFleur said:
Many years ago I fitted a hydraulic pump to a Lister Diesel - unfortunately we had been supplied with an incorrect pump rotation so the seal blew as soon as the pump was operated which pumped hydraulic oil into the engine which then 'ran away' - very frightening as the workshop was filled with white smoke and I only stopped the engine by yanking off the airfilter and putting my hand over the inlet.
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Engine wise I am fairly ignorant - cant this kind of happen when a governer sticks/jams as well or is that something different. Was told the way to stop this was to 'crack off the injectors' which I assumed meant unbolting the pipes to them so they lost fuel.
 
Swanrad2 said:
Engine wise I am fairly ignorant - cant this kind of happen when a governer sticks/jams as well or is that something different. Was told the way to stop this was to 'crack off the injectors' which I assumed meant unbolting the pipes to them so they lost fuel.
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I wouldn't be putting my head down the side of an engine that was doing that.
 
alahol2 said:
I wouldn't be putting my head down the side of an engine that was doing that.
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Fly wheel/high revving + head not a good mix then?
How else to stop it, I don't want to take the governor apart if I don't have to as they can be sensitive by all accounts.
There's a lot of diesel in the filter housing so turning the stop tap off would take a while to kill the engine (although its safer at that end).
Maybe stand by the drain on the main diesel filter and stop tap.
How long would the engine run on only the diesel in the secondary filter?
 
Isn't the issue that it's running on engine oil and not diesel from the tank?

I would think the air filter is the only way, but I'm not mechanic so I'll be interested to see.
 
Scarboroughsloop said:
Isn't the issue that it's running on engine oil and not diesel from the tank?

I would think the air filter is the only way, but I'm not mechanic so I'll be interested to see.
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Sorry - yes, I had drifted, from how to stop a 'run away engine' to how to stop an engine that you can't stop in the usual way.
 
Yes, the difference is that the impressive video shows the engine running on the crankcase oil that is somehow passing the pistons, whereas if the governor stuck by some means it would running on fuel. The good news(?) is that blocking the air inlet would be effective in either case. I wouldn't like to risk my hand though, a piece of plywood would be far more comfortable. Rags have been known to be sucked into the engine.
 
Surely all you have to do with a runaway BUKH is to lift the decompressor?

You can not stop a runaway just by turning the fuel off, because its not running on fuel anymore. Theres not a lot you can do safely, other than stopping the air supply. Trouble is most engines also have the engine breather running in to the air intake, and that can supply enough air to keep it going.

In answer to another question, the danger with a runaway is that if (when) something breaks, it may come off the engine altogether at very high speed with potentially lethal effect on anybody in the way. ALWAYS stand well clear - when it goes it goes - violently, possibly spraying shrapnel over anything within 50 feet or so. Not always, but dont chance it :http://www.youtube.com/watch?v=aUkXriHjQeI
 
oldharry said:
Surely all you have to do with a runaway BUKH is to lift the decompressor?

You can not stop a runaway just by turning the fuel off, because its not running on fuel anymore. Theres not a lot you can do safely, other than stopping the air supply. Trouble is most engines also have the engine breather running in to the air intake, and that can supply enough air to keep it going.

In answer to another question, the danger with a runaway is that if (when) something breaks, it may come off the engine altogether at very high speed with potentially lethal effect on anybody in the way. ALWAYS stand well clear - when it goes it goes - violently, possibly spraying shrapnel over anything within 50 feet or so. Not always, but dont chance it :http://www.youtube.com/watch?v=aUkXriHjQeI
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That's right.An outboard was being run on the yacht club ramp in Tavira when one of the rods flew out through the crankase and landed some 10 meters away.
 
My Bukh didn't have a decompressor, although I was talking generically. The crankcase breather is usually pretty small, in fact on the Bukh DV20 it is only about 5 mm diameter, so unlikely to support much combustion.
 
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