nota

saving bits off a semi-sunk diesel 2 cly

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never deep but tidal flooded beached boat on a 2 cyl

1 or 2 foot max no pressure ?

is any thing worth saving ?

block or head ?

will pumps or other bits still work ?

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These are all guesses on my part because I don't have any idea of condition. How rusty is it? How long immersed?

Machined bits like pistons/crank/camshaft probably not.

Valves maybe

Manifolds, exhaust elbow are generally rough castings so yes

Heat exchanger - yes

raw water pump - yes

fw pump - maybe

injection pump - BIG NO

 

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SURFACE RUST ONLY

3 years  down a foot the head block manifolds look not to bad no pits

most paint is intact and not bubbled

unpainted surfaces lite to moderate rust surface cover

the alloy trans looks far worse with lots of white corrosion it was a bit deeper do to bank slant

was on a tidal creek off a river [peace] fairly far up brackish with rain added

I guess it needs to be opened up to tell the story

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Resist any desire to turn the crank until the head’s off.

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I guess the big questions are how long it was submerged and was it running when it took a bath? ie, ingested salt water as opposed to simple flooding.

On  the advice of an extremely experienced diesel mechanic I once bought unseen a 4-cyl Ford diesel for 200 bucks. He said it was worth if for the price of the injector pump alone.

Did rebuild with new wet cyl liners, injectors, bearings, different ratio gearbox. 

Started right up and purred like a kitten for years after.

Tech experience was what made it possible.

 

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not running docked when the hurricane took out the dock and beached the boat in the mud

never really sunk but tides flooded in and out but low tides far up a river so brackish

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Depends how much work you want to put into it. We salvaged and rebuilt 2 engines for teaching purposes - so they run but I would never trust it on my boat.

It can be done! But what use do you have for it?

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Which engine is it? If it's an old Detroit Diesel two-stroke, I would attempt to rebuild it if the cylinders are clean inside, that's a dead simple engine. If it's a newer Yanmar or Kubota four-stroke it still might be rebiildable. 

I'm with KiwiJoker on this one, some heavily abused and submerged engines need a little love and they'll run. Bonus that you then know the engine intimately and can fix it easier down all the days.

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If you already have it - disassemble and inspect - that's the only way you're going to be able to make an informed decision.  Machined surfaces can often be re-machined, and then fit back together with different sized bushings.  ( ie crank journals can be ground down and then assembled with thicker crank bearings, rod big ends can be resized. 

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