Advice please..... sealine 27 ft, 30 year old boat with 2 petrol engines

Trudy said:
We’ve seen the part referred to as the “exhaust yoke outdrive riser”. To us it looks in the manual photo simply like a pipe running from the exhaust manifold to the outdrive. We’re assuming the exhaust comes out of a hole in the outdrive.
Click to expand...
As I said in an earlier reply that it could be this part . If that’s the case you can fit a plastic repair part marketed by Volvo just for this problem, however if it requires the whole pipe it’s boat out the water again and move the engine forward to fit the part .

I cannot but think why you are seeking help on here when you have VJ on the case .
He should be able to rectify this problem as an engineer.
 
volvopaul said:
As I said in an earlier reply that it could be this part . If that’s the case you can fit a plastic repair part marketed by Volvo just for this problem, however if it requires the whole pipe it’s boat out the water again and move the engine forward to fit the part .

I cannot but think why you are seeking help on here when you have VJ on the case .
He should be able to rectify this problem as an engineer.
Click to expand...

Have we solved the original problem ? ... The starboard engine is working well but the port engine is below the water line

Brian
 
I have not a lot to add... but say Hi... as soon as I started reading thread I guessed it might be you.. I’m opposite you at Mercury. Your sealine is incredibly shiny, and I know you are investing in a new cockpit cover (on the basis last time we were down the old cover had gone)... I have never had a boat with outdrives so advice drawn from here is gold. I understand your boat might have some sentimental value, and I’m very much from the school of fix if you can..a boat can give you weekends away and great holidays.
If your engineer can sort the issue stick with him, if not as much as VP is super generous with his advice, you may want to pay him to take a look. Good luck, and will say hello next time we see you.
 
Firefly625 said:
If your engineer can sort the issue stick with him, if not as much as VP is super generous with his advice, you may want to pay him to take a look. Good luck, and will say hello next time we see you.
Click to expand...

I concur, don't let an engineer guess, get one that knows. VolvoPaul of this parish is the engineer to have on the case., very highly respected and recommended.
 
volvopaul said:
Sounds Like they are AQ151 or AQ171, you can post pics on here .

Your problem is normal for that engine but has been accelerated probably because it’s been left to rot .

the exhaust elbow at the back has corroded quite normal for that model , if caught in time you can save the engine , sounds like it’s not been to the point water enters the boat when you step aboard , quite dangerous so it needs to come out the water before you loose it .

The exhaust pipe from the transom shield rots away at the top underside the rubber joint , it could be this but without professional inspection it’s all a big guess.

I hope you can take this on , I will warn you professional services are expensive but as it’s a free boat it’s got to be worth investing .

where is it located ?
Click to expand...
I don't think you have grasped the problem, its not that water enters the boat the OP is surmising that when the boat is low in the water due to stepping on board as it rocks that water rises up the exhaust manifold and into the head. at no time have they said water is coming out of the exhaust system into the boat
 
Normally you would either be asking for help and advice on the forums, or paying an engineer to resolve it, not both!
When we started out on a previous boat, we used an engineer that seemed very nice but didn't actually have any idea what he was doing. It was an expensive, frustrating and time-consuming experience.
If your engineer can't explain to you in laymens terms exactly what the problem is, and how he's going to fix it, I would politely run away.
I would't hesitate to recommend Volvopaul if you can get him to take a look, I suspect it will be a far cheaper and less frustrating process.
Best of luck!
 
I think that most of us reading this now are a bit confused as to what outcome you are seeking to your questions.. Some of the problems you have I am sure are due to the age of the engines and some propensity to corrosion on this particular model, the fact that it has stood on the river for 4 years not doing anything, you have experienced overheating and a stuck valve, the stuck valve is perhaps to be expected after sitting for along time, did you pull the plugs and introduce some oil or diesel to lube the upper cylinders and changed the raw water impellers when you re commissioned?

its seems you have a shopping list of repair parts that you have either bought or need to buy and a willing engineer to work on your problems to fix them, the problem I suspect is that you are trying to calibrate what he says against what a panel of folks on here might suggest, because you may feel that your inherited boat is leeching cash....................that I am afraid is motor boating, on repairs or restorations once you start the army marching its difficult to stop it.
 
We have been here, although by choice.

Its a good way of getting a cheap good hull and 'Caravan Part'.

The problem you now have is that you are managing engines that are pretty much on life support. Your boating life will revolve around tinkering and keeping them alive. Unfortunately, fixing the current issue wont make them new engines again.

We re-engined and haven't looked back. Its not for everyone and certainly isn't cheap. But you front load all your costs and enjoy the reliability and economy of a new engine.

Maybe not the advice you wanted, or that helps your immediate predicament. But hopefully food for thought.

Good luck (y) :)
 
I guess if the worst came to the worst... would Repower Marine UK be the people to speak to?

edited..
Just realised these are 4 cylinder lumps.. so probably irrelevant info I have... not for the first time!
 
Last edited:
Trudy, I think your best solution now is to ask VolvoPaul to come and have a look at your boat and engines, and listen to his advice. He works in the Solent area, so Mercury should not be a problem.
 
Superheat 6k of this parish told me that I was buying an engine with a boat attached when I was buying my current boat.
Never a truer word said!!
 
Hi everyone. J here (Husband)

Thank you all for your comments and advice.

However, it’s spiralling a little out of control on here, so I thought I’d try and reign it in a bit.

First off - and for the avoidance of doubt - we have nothing but good things to say about Jon, our engineer. He has project-managed the boat from a pretty crappy condition to a good condition. His advice has been sound and we have complete confidence in him. He has gone above and beyond to help us.

The reason why T jumped on to this forum was because she was seeing if anyone else had experience of our type of boat and its engines, and the particular problem we were looking at. It’s gone a bit high and right on here since.

So, to draw a line under it all: I think we understand the problem well now, and Have hopefully solved it - fingers crossed.

I am not going to go deep into the details, but it doesn’t appear to be as bad an issue as T had anticipated. We’ve overhauled / serviced the cylinder head, replaced the head gasket (obvs), replaced the valves on No 4 cylinder and cleaned up the exhaust manifold. The exhaust yoke outdrive riser is fine - so is the bellow linking it to the seawater jacket. We’ll see how it runs at the weekend.

For anyone that got the impression that the boat is going to sink or is in peril, it isn’t. It is a well founded boat.

We’re now dealing mainly with niggles and superficial issues. As Firefly has mentioned, it’s looking pretty good for an old gal. New canopy going on tomorrow.

Thanks once again.

Safe sailing.
 
Firefly625 said:
I have not a lot to add... but say Hi... as soon as I started reading thread I guessed it might be you.. I’m opposite you at Mercury. Your sealine is incredibly shiny, and I know you are investing in a new cockpit cover (on the basis last time we were down the old cover had gone)... I have never had a boat with outdrives so advice drawn from here is gold. I understand your boat might have some sentimental value, and I’m very much from the school of fix if you can..a boat can give you weekends away and great holidays.
If your engineer can sort the issue stick with him, if not as much as VP is super generous with his advice, you may want to pay him to take a look. Good luck, and will say hello next time we see you.
Click to expand...

Hi, Firefly. Please do come and introduce yourself next time you see us on the boat. Happy to bore you with the back-story to the boat, or not :).
 
Freebee said:
I think that most of us reading this now are a bit confused as to what outcome you are seeking to your questions.. Some of the problems you have I am sure are due to the age of the engines and some propensity to corrosion on this particular model, the fact that it has stood on the river for 4 years not doing anything, you have experienced overheating and a stuck valve, the stuck valve is perhaps to be expected after sitting for along time, did you pull the plugs and introduce some oil or diesel to lube the upper cylinders and changed the raw water impellers when you re commissioned?

its seems you have a shopping list of repair parts that you have either bought or need to buy and a willing engineer to work on your problems to fix them, the problem I suspect is that you are trying to calibrate what he says against what a panel of folks on here might suggest, because you may feel that your inherited boat is leeching cash....................that I am afraid is motor boating, on repairs or restorations once you start the army marching its difficult to stop it.
Click to expand...

Hi Freebee. J here. I think we’re good now. Clarity has overcome confusion. You can all stand at ease and stand easy. Yours, aye
 
Murv said:
Normally you would either be asking for help and advice on the forums, or paying an engineer to resolve it, not both!
When we started out on a previous boat, we used an engineer that seemed very nice but didn't actually have any idea what he was doing. It was an expensive, frustrating and time-consuming experience.
If your engineer can't explain to you in laymens terms exactly what the problem is, and how he's going to fix it, I would politely run away.
I would't hesitate to recommend Volvopaul if you can get him to take a look, I suspect it will be a far cheaper and less frustrating process.
Best of luck!
Click to expand...

Hi Murv. J here. As I replied to Freebee, I think we’re good now. Yours, aye
 
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