Can I seal a heat exchanger? It has a hole in the bottom edge!

[Boater On Thames]

Engine is Volvo Penta TAMD61A. Found one of the heat exchanger has a hole in the housing bottom edge during the cleaning process today. It cause by the corrosion. Previously it has no leaking. But it is a little wet and a few drops water come out now after my cleaning process removed the dirt and corrosion. Can also see the rubber seal already. Any idea how to fix? Any product good for this kind repair? Many thanks.

 

[BruceK]

Get the part number and order locally

Volvo Penta Exploded view / schematic Heat Exchanger, Components: 864916 - MarinePartsEurope.com

 

[Boater On Thames]

Thanks.
Yes, replacement is the ultimate solution. Just trying to see if anyway to repair to make it cheaper.

 

[VicS]

Engine is Volvo Penta TAMD61A. Found one of the heat exchanger has a hole on the bottom edge during the cleaning process today. It cause by the corrosion. Previously it has no leaking. But it is a little wet and a few drops water come out now after my cleaning process removed the dirt and corrosion. Can also see the rubber seal already. Any idea how to fix? Any product good for this kind repair? Many thanks.

JB weld J-B Weld Epoxy Putty Sticks | JB-Weld

 

[Sticky Fingers]

Dear All,

I am new here. I am purchasing my very first boat- a 41 feet flybridge. I had sea trial today. It running just ok. Top speed 15 knots at 2500 rpm. Twin engines Volvo TAMD61. The engines noises are too loud. It's almost impossible to stay comfortable in the saloon while cruising. Also, lots grey smoke from engines at the beginning when throttle push up, then white smoke in all time. Oil has been changed in June, and not been use so much since there. So the suveryer said oil analysis is not help anyway.

Based on the sea trial experience, I am now struggling whether I should go ahead or cancel the purchase. Survey report will come next Wednesday.

Any input appreciated.

Thanks.

The surveyor was with me in the sea trial. But he said nothing at the scene. He just said wait for his full report next week.

The hull and the propellers are quite clean. We lifted up the boat before sea trail. The seller explain that the low speed and low rpm is because the full tanks. But I think the loud noises and smoke indicated some thing not good for the engines.

There is one more thing, the trim tabs are not working.

Sorry. This topic bring back here again.

I just bought my very first boat today. She is a 41 feet aft cabin flybridge. Make in 1992. Twin engines total 600 hp. The survey report said she is in serviceable conditions.
...

I have empty my tank today. My problem is that I can't make the tank completely clean and dry because it is too big and can not remove, and with limited access. So, Is there any sealant or product can seal a tank when the tank still a wet and oily? Thanks.

@Lucas Gan did you actually get this boat surveyed before you bought it? If so, what did the surveyor say? You seem to be having a lot of problems that should have been found in the survey.

Tanks
Servicing
Heat exchanger leaks

Seems a worrying trend. Did your surveyor pick any of these up?

 

[Boater On Thames]

Hi Scala, yes I got this boat surveyed before purchase. That was October 2018. Report no mention this problem. And there is some rust a little here and there when purchase which looks normal as a used boat. I was too lazy to clean it until now. This is the first time I finally cleaning the engine and preparing to do some touch up paint.

 

[Sticky Fingers]

Well your surveyor may be liable if he missed these things. The leaking tank can't be new. The corroded HX can't be new. Engines not serviced for 12 years can't be new.

 

[Boater On Thames]

The report mentioned two engine's oil was new that time. So he can't do that oil analysis because the oil was too new. So maybe the writing date on the filter is a mistake as other said.

 

[Boater On Thames]

Hi VicS, thanks. That looks good.

 

[dulls]

Engine is Volvo Penta TAMD61A. Found one of the heat exchanger has a hole in the housing bottom edge during the cleaning process today. It cause by the corrosion. Previously it has no leaking. But it is a little wet and a few drops water come out now after my cleaning process removed the dirt and corrosion. Can also see the rubber seal already. Any idea how to fix? Any product good for this kind repair? Many thanks.

We used metal putty but to build up after a leak around a bolt fitting at the end of the heat exchange. I circled the area and we had stripped the bolt trying to remove the cover to the heat exchanger . This picture is before the fix and you cant quite see the area. I think it depends on the type of leak and location as to if you can make a long term fix. I am thinking you have to bite the bullet and pay out the money.

 

[Boater On Thames]

Thank you Dulls. I will give it a go. It will be a replacement if the putty can't fix it.

 

[dulls]

Thank you Dulls. I will give it a go. It will be a replacement if the putty can't fix it.

What i can say is keep an eye on your temp gauge and fitting after fixing. I cant remember the one we used but it could take heat. We ended up with a larger bolt holding the plate on to give more bite for the threads. I hope you really consider the issue properly because i still think you have to consider any damage to the engine if your repair fails. Mine is a a yacht engine. It does not do the work that a motor boat does. I do not know what your boat is. I have no mechanical skills but someone with that background could tell you the pros and cons of a temporary fix.

 

[Boater On Thames]

Thank you for your remind. My engine is an inboard engine. It just the sea water heat exchanger housing has a little hole. Currently, only a little wet on the housing bottom itself, not even make the bilge wet yet.

 

[Piers]

Morning all. Play d'eau had a leaky H/Ex close to its cover plate, but impossible to find exactly where. Abbey Heat was recommended by a Cummins specialist, and their work has been quite superb. they found 3 tiny leaks and successfully welded them so you can't even see them. Brilliant. Saved a small fortune.

 

[AllanG]

Well your surveyor may be liable if he missed these things. The leaking tank can't be new. The corroded HX can't be new. Engines not serviced for 12 years can't be new.

I can’t see how the surveyor could be liable nearly 2 years after the survey was carried out!!

 

[Mr Googler]

I was under the impression, like Scala no doubt, that the boat was a recent purchase/survey

 

[Sticky Fingers]

I can’t see how the surveyor could be liable nearly 2 years after the survey was carried out!!

I was under the impression, like Scala no doubt, that the boat was a recent purchase/survey

Well I didn't have the date in mind tbh, that may be a point, it was Oct 2018.

 

[Portofino]

Need pictures really .
Lucas can you ....learn how to post them on here .

 

[dulls]

I can’t see how the surveyor could be liable nearly 2 years after the survey was carried out!!

Dont the surveyors make them selves immune from any comebacks with little phrases that say things like"I was unable to observe the area in great detail but it appeared to be serviceable" which is understandable.

 

[volvopaul]

I can’t see how the surveyor could be liable nearly 2 years after the survey was carried out!!

Exactly , especially on an engine that’s had no professional inspection for a long time .