"Collectors" on Volvo Penta engines

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PeterCMurcia

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I am looking to buy my first powerboat, having gained my PB2/ICC in Spain. My budget does not allow for new or even recent boats, and my local marina can only offer 7x2.5m berths, so I am looking at e.g. Lema Gen of 2000-2006 vintage. Someone has advised me to check that the anodes and collectors have been changed recently, but I can find nothing about the latter on Penta spares websites. Can anyone advise me what these do, how often they should be changed, and most importantly what they cost?
I have been to see a Lema today, but the owner did not seem to know about them, let alone if he had had them renewed!
Any advice on pitfalls appreciated.
 
Certain VP engines use pencil anodes in the seawater cooling system - normally mounted an a brass tapered threaded plug. Typically found in heat exchangers, oil coolers, after coolers. If you can quote an engine model number then precise locations can be advised. Easy enough to remove to inspect.
 
I don't know what "collectors" is referring to.
Is it possible the person who advised you meant "filters", e.g. oil filters, air filters, fuel filters.
 
If its a power boat then most likely its a petrol engine, and collector is another word for risers. These will indeed need replacing every 5- 7 years depending on useage.
 
It's rather an odd couple of things to 'look out for'. My advice would be to look at the overall condition of the boat, the maintenance history and make sure everything works. Get an engineer to check the engines and a survey to check the hull. The cost of such inspections can normally be recovered in price reductions for faults found.
 
Collectors could be the exhaust pipes that run from the risers to the outlet at the transom shield on the V6+V8 petrol engines
They can erode or corrode where the hoses fit
 
Thanks to all responders: you have clarified that what the Spanish call "colectores" are the risers. There is an excellent video on YouTube showing a boat man removing, checking and replacing these along with the exhaust manifold. I can now understand why so many boats of relatively few years are advertised as "new engine fitted", as not knowing about and checking / changing these would be a good way to cause severe damage!
They are expensive (2@375€ + manifold @ 475€ plus gaskets and labour) so just the sort of maintenance likely to be not carried out on a boat someone is selling!
The boatman gives them a life of 3-5 years, depending on usage.
It seems that Mercruisers and Penta petrol engines both have them.
https://www.youtube.com/watch?v=uVxuY1ERHN0
 
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Be aware that the Lema might be harder to sell when you want to move up and an older model from a known/proved brand will hold its value better.
 
Lema is a major marque in the Spanish market, with a large factory in Almería. They are trusted here to be suited to the Med, and there are lots on the market.
My "technical adviser" here is the guy who taught me on the PB2 course, and coincidentally owns a Lema Gold. He has seen my photos of the boat and advises that there is a damp problem that should be checked out, so I am walking away from this particular boat.
 
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