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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
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  #21  
Old 07-11-2010
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I have NEVER seen an engine fail because the block/ head rusted from the inside out. A build-up of crud, corrosion, gunk and crap in the cooling passages causing an overheat, sure, but I have never seen a CAST block rust out. I'm not saying it can't happen, but it would take an extraordinary set of circumstances.
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  #22  
Old 07-12-2010
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I think I know what you are asking, if wrong disregard. An inboard engine is better than an outboard hanging off the transom, hands down, no way no how, done deal. I have had both and will never have a boat with an outboard again. If you sail in flat waters with no surf or current than an outboard will do the job. On the other hand get into some chop or heaven forbid real ocean then the thing is almost useless. Now, on to the question on the motor if it works then paint it do what needs done, oil, filters, impellers, exhaust etc and you have a boat that can take you home. An engine for me is a safety thing not just a convincence. I have had to use it to get out of the way of real big ships that don't move and the wind is not enough, get down the channel when, if you get off the path you are aground. Sounds like you have a good head on your shoulders so the decision comes down to you for your boat. But, don't spend 10 grand on a new engine unless, you have the money then go for it guys like me make a living doing this kind of stuff.
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  #23  
Old 07-13-2010
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Jobi, I second bluwateronly's suggestion about inboard vs. outboard... it is too easy for an outboard to be torn off the stern in rough water. The only semi-workable arrangement for cruising offshore with an outboard (presuming that's still your plan) is if it is mounted in a well inside the cockpit. I don't think your boat has that arrangement available, so you're better with the inboard. It also keeps the weight of the engine lower down, better for stability, instead of hanging the engine weight off the stern.
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Old 07-13-2010
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Thanks guys, that is the info I was after.

and why my secon choice boat was the hughes 25 with a well for the outboard, witch kinds of become an inboard?

thanks for the good information.
cheers
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  #25  
Old 07-13-2010
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Quote:
Originally Posted by jobi View Post
runs ok but should I keep it?
I would use the space for added water tank, and use a small oudbord.
Chunk that old MD1B just as fast as you can!

I had one. You will find the parts -IF you can find them- will be spectacularly, outrageously, mindbogglingly expensive.

The water channels in the head are likely almost rusted through into the cylinder. That old starter generator is a serious relic that puts out a pitiful little bit of amps. Oh, and the regulator for it? Good luck with that.

Lets just say, I will NEVER, EVER own a Volvo equipped boat again.

(if you ask me I'll tell you what I really think)
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Old 07-13-2010
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fparry, glad your experience with that motor was better than mine...

But you will find a replacement cheaper than any rebuild once its time.

Just don't waste your time even thinking about it.
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  #27  
Old 07-13-2010
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[QUOTE=bljones;620807]With all due respect, garbage.
The parts to COMPLETELY rebuild a single cylinder diesel engine, with the exception of the block and head, even a Volvo, won't run more than $1500. QUOTE]


bl...You have very obviously never priced parts for this engine.

Try it...



1500 bucks will get you some random bolts in a sack.
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  #28  
Old 07-13-2010
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sidmon pleas dont fall for this nonesens, the md1 cooling systhem is absurdly simple with a few holes thrue the cylinder head and injector sleeves. the thermostate and hose ar the only weakness of this engin, and mine (originals) still performing thire duties.

all this volvo being lemons simply dont have a leg to stand on.

any brand can have problems. but in this case a new cylinder head would fix any rust damage possible. and sins mine have always been cealed from oxigen theres not rust or corosion at all. in any case a quick visual would clearly infor anyone on this engin condition.

cheers
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Old 07-13-2010
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also for whats its worth, id never buy original parts, they coast way too much. its better to have a machine shop order replacements or costum built.

a cylinder wall and piston regardless of make will do its job, iv alredy said this on this thread.
out of production parts for any make is prohibitive
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Old 07-13-2010
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Quote:
Originally Posted by jobi View Post
sidmon pleas dont fall for this nonesens, the md1 cooling systhem is absurdly simple with a few holes thrue the cylinder head and injector sleeves. the thermostate and hose ar the only weakness of this engin, and mine (originals) still performing thire duties.
Been down this road with my very own MD1B...

The boat (a Contest 27) was a southern boat, so it stayed in the water year round. I personally saw what the interior looked like on that motor, and was shocked at the water channel erosion present.

Like you, I thought such a simple engine would be an easy rebuild.

I found out different though.

Last edited by sidmon; 07-13-2010 at 08:39 PM.
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