VETUS explains the wet exhaust system used on boats: often hidden but crucial for your safety

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Which parts does your yachts exhaust system need? How do they all work together?
00:00 Intruction wet exhaust system
00:30 Tasks of a wet boat exhaust, protect crew and engine
02:00 Operating modes wet exhaust system
03:00 Main parts : waterlock
00:00 optional parts: anti syphoning valve, gooseneck, exhaust temperature alarm
00:00 Hydrolock risk
00:00 Mixer / Swirler
00:00 Gooseneck
00:00 Wet exhaust hose
00:00 Why plastic waterlocks don't melt
00:00 Why is stainless steel a poor choice for a waterlock material?
00:00 Anti syphoning valve
00:00 Sizing a waterlock

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Опубликовано:

28 июн 2022

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Комментарии : 18

@jamesstrom6991 22 дня назад

great info. you won a customer. well presented.

@hansboersma4354 Год назад

Marvelous presentation of this often misunderstood subject. You cleared-up some of my misconceptions. Thanks.

@stephenscott963 7 месяцев назад

New subscriber and I want to say you are now one of my favorite channels as I’m a newer captain coming from large center consoles to med size diesel vessels! Keep up the great videos! Thank you!

@paulgillard2258 Год назад

Excellent presentation very informative. Thanks

@davidwalsh7603 Год назад

great video thanks

@petermackay5803 Год назад

Could you please talk about winterizing the water muffler. i presume there is a drain that needs to be emptied.

@murrayahtune7262 10 месяцев назад

Can I use the wet exhaust hose for radiator hose? Thanks

@terrypannett8890 2 года назад

Good morning . I have a Waterjet powerboat 21 feet Aluminium that I am building . To be powered by a Mercruiser 3.0 TDi . Exhaust riser outlet is 102mm. I have a new Vetus DEMPMP 90mm Inlet x 90mm Outlet, which I was going to run underfloor. I was going to run this direct to the transom with minimal down angle to the transom and fit a Vetus 90mm TRCVP with integral Non-Return Valve. I have very limited room. From the engine Riser to the Transom is 835mm, with the exhaust needing to be underfloor for 60cm directly from the engine riser. The Riser is significantly higher than the waterline, approximately 60cm to top of the riser elbow bend. Can you please advise if this is suitable. The transom outlet would be underwater with the muffler draining to the transom. **??Or should it be different in this case??** Your help would be much appreciated.

@TheAquaPlanning 2 года назад

Goodday Terry, sounds like an exiting boat! Since the waterline of these boats changes a lot when you change speed I find it difficult to give a 100% answer. If I look at the numbers I don't expect a problem, especially not at speed. When you drastically slow down by lowering the bucket, which is part of the fun of a jetboat, some of that water will still be travelling forward, towards the engine. You have a nice measurement from waterline to top of exhaust riser. I like to measure to the lowest point, as that is the "protecting height". Any water that gets higher than that will move towards your engine. With a 102 mm exhaust it will be close to 50 cm, which is about as much as you can get in these boats. At low speeds the back tends to sink a bit, further lowering the exit underwater. Probably not an issue, but the engine won't run very smooth with that backpressure. We don't have a lot of those jetboats here in Europe, so I would advise you to contact builders with similar boats.

@terrypannett8890 Год назад

@@TheAquaPlanning Much appreciated

@ssss-df5qz 3 месяца назад

Why is the system designed as such to create all these problems in the first place? Why not dump cooling seperate to exhaust??? Crazyness.

@markrant1460 7 месяцев назад

i never hear of "Glow Plugs" being used in marine deisel engines. I have contacted a few narrowboat owners in England and they don't seem to be knowledgable of these plugs. In Canada they appear on all deisel engines due to our winters. Am I missing something or do these plugs just don't exist in marine engines?

@colonelfustercluck486 7 месяцев назад

Hi Markrant1...... glow plugs all over the place, particularly automotive, in New Zealand.... which can get seriously below freezing in the southern areas. ON You tube, a lot of the English narrow boat owners have other tricks, like the spray of ether up the air intake, actually lighting a fire in the air intake (a rag with diesel) to increase compression.... we are talking about a little old fashioned, and possibly risky, here. I am sure modern enough marine diesels would have glow plugs for those very cold situations. OR alternative methods for a very cold start, in their operation manual.

@markrant1460 7 месяцев назад

Thank you Peter for your reply@@colonelfustercluck486

@kiwiwifi 3 месяца назад

Never activate your glow plugs if using ether to start a diesel @@colonelfustercluck486

@SuperDirk1965 8 дней назад

Glow plugs are definitely a thing in all non direct injected diesel engines. Engines with direct injection can sometimes forego on glowplugs but in very cold climates they are usefull. My Mitsubishi based Drinkwaard engine (non direct injection) has them and the same engine with direct injection has them as well.