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Old 20-06-2015, 12:28   #16
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Re: Can anyone give me a ROUGH est on reporting

Nope the solenoid isn't the answer. I looked it up and it is a fuel shutoff not a compression release. I know I'm getting fuel.


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Old 20-06-2015, 13:18   #17
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Re: Can anyone give me a ROUGH est on reporting

See this thread here on CF.

Westerbeke 46 Cylinder Compression
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Old 20-06-2015, 13:31   #18
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Re: Can anyone give me a ROUGH est on reporting

Well.... if the boat sat a long time, I suppose it's possible for multiple broken rings from corrosion etc. You need that compression test. Is that the perkins 4-108 based engine?
If it is broken rings, and not too many hours on the engine, It might be possible to do just the cylinder work not rebuild the whole engine for a lot less than a new engine or total rebuild.
Back in the day a lot of car engines were "overhauled" rather than "rebuilt". Hone the cylinders, new rings, valve grind and possibly nothing else if the bearings looked good.
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Old 20-06-2015, 13:36   #19
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Re: Can anyone give me a ROUGH est on reporting

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Originally Posted by Cheechako View Post
Well.... if the boat sat a long time, I suppose it's possible for multiple broken rings from corrosion etc. You need that compression test. Is that the perkins 4-108 based engine?
If it is broken rings, and not too many hours on the engine, It might be possible to do just the cylinder work not rebuild the whole engine for a lot less than a new engine or total rebuild.
Back in the day a lot of car engines were "overhauled" rather than "rebuilt". Hone the cylinders, new rings, valve grind and possibly nothing else if the bearings looked good.
If you'd opened the link in my last post you will have discovered:

"Westerbeke is a marinizing company...not an engine company. If it's a Westerbeke W46, then it is based on a Mitsubishi 4DQ5. Number 4 cylinder was the one on mine which had water intrusion caused by a back up in water flow out the exhaust. I have a center cockpit and the exhaust run is long with a double loop. I rebuilt my engine by ordering parts direct from a distributor for Mitsubishi. You cannot tell them it's a W46 because they have a proprietary deal with the bandits at Westerbeke. You have to tell them it's a 4DQ5. Hope this helps."

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Old 20-06-2015, 13:50   #20
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Re: Can anyone give me a ROUGH est on reporting

Back to costs, my estimates are about 15K (for each engine) installed.
I will soon have a Perkins 4-108 that will want a home. I have decided to replace both engines in my cat.
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Old 20-06-2015, 14:07   #21
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Re: Can anyone give me a ROUGH est on reporting

Google the internet for a Mitsubishi 4DQ5 engine rebuild kit.
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Old 20-06-2015, 14:43   #22
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Re: Can anyone give me a ROUGH est on reporting

Thank you Wrong, I shall but I hope it doesn't come to that. I shall hopefully know more when the mechanic finishes his diagnostics.


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Old 20-06-2015, 14:55   #23
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Re: Can anyone give me a ROUGH est on reporting

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Google the internet for a Mitsubishi 4DQ5 engine rebuild kit.
This engine is widely used in forklifts. Seems most parts sources are in China.

Check this site!

Mitsubishi Forklift Fuso Truck, Thermostat items in 4dq5 store on eBay!
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Old 20-06-2015, 16:32   #24
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Re: Can anyone give me a ROUGH est on reporting

I would rebuild. I love my little WB 42. Be careful if you are going to replace. Even with a Westerbeke. 50. A friend just ran into this. You can price them out but actually finding one in the country is another story. Supposedly it is too expensive to bring them up to US emissions.

Id love to hear if anyone had a different experience espeacialy wuth a westerbeke in the last 4 or 5 years.
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Old 20-06-2015, 17:47   #25
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Re: Can anyone give me a ROUGH est on reporting

Just a thought, you mention that it may have 'stood to long'. Sometimes after standing idle the rings can stick in the grooves particularly on an engine that has don lots of short runs or idling. A spray of WD40 or decoke fluid in each cylinder can sometimes unstick them.
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Old 20-06-2015, 18:04   #26
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Re: Can anyone give me a ROUGH est on reporting

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Just a thought, you mention that it may have 'stood to long'. Sometimes after standing idle the rings can stick in the grooves particularly on an engine that has don lots of short runs or idling. A spray of WD40 or decoke fluid in each cylinder can sometimes unstick them.
I was wondering the same thing about history? If an engine has been run ring failure will generally cause dieseling on shut down from sump oil. Total lack of compression would be catastrophic ring failure?
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Old 20-06-2015, 19:45   #27
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Re: Can anyone give me a ROUGH est on reporting

If you've lost compression in all cylinders then it sounds more like a timing gear or chain (whichever it has) problem.
Just sayin.
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Old 20-06-2015, 20:23   #28
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Re: Can anyone give me a ROUGH est on reporting

I'd expect the engine to be seized in place before there was sufficient corrosion to instigate complete ring failure across the entire bank. Pretty sure something else is going on. I'm interested to hear the outcome...most likely a single point of failure that is affecting the whole process (such as a cam chain like dlockhart says, or an issue with either the fuel or glowplug systems).

Coming from an automotive background, it's surprising to hear how often boat engines are replaced rather than rebuilt...especially considering boaters don't have the option of dropping in cheap, direct-swap 'junkyard engines' like is often done for cars.
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Old 21-06-2015, 06:03   #29
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Re: Can anyone give me a ROUGH est on reporting

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. . .
Coming from an automotive background, it's surprising to hear how often boat engines are replaced rather than rebuilt...especially considering boaters don't have the option of dropping in cheap, direct-swap 'junkyard engines' like is often done for cars.
That's because our engines tend to die of old age, lack of use, and corrosion, rather than too many hours.

After 20 years, you might well not be ready for a new boat, since they last much longer than cars do. But you might well be itching for a brand new engine, if you can afford it.

Also, unlike the case with cars, the reliability of our engines can be a matter of life and death.

My Yanmar is 14 years old and runs well with about 2100 hours. But it's got rust here and there, and smokes. It has old fashioned instrumentation and is a lot less efficient than modern engines are. Parts are still readily available, but for how long? I'm not planning to replace it soon, but if I had any major problem with it I would sure not rebuild it, if I could afford to replace it with new.

It's somewhat different with the old Perkins engines which have basically unlimited life, with sleeved cylinders and so forth.
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Old 08-07-2015, 20:22   #30
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Re: Can anyone give me a ROUGH est on reporting

Hi Cabo Sailor

Any further news on the engine?
I just bought a CR38 with a W46 engine - would lve to hear the rest of the story....
I hope no news is good news...

Pete

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