Jump to content

Potential hydraulicing on canaline engine?


Featured Posts

My new boat has a canaline 38 engine.  In conversation with another owner i noticed the exhaust runs level, then down to exhaust manifold. Without a rise in pipe from the point it exits the hull, is there not a possibility water could run in and straight down into exhaust manifold, causing engine to hydraulic and seize ?  Surely it should have an intial rise to allow water to drain back out ? 

Any thoughts please ? 

Link to comment
Share on other sites

Cant say but it is oftEn Likened TO a dessert oNe May enjOy . ThiS iS part of snagging list i am compiling 

( and no, I know where caps lock is 😄

 

 

Link to comment
Share on other sites

6 minutes ago, Norm55 said:

Cant say but it is oftEn Likened TO a dessert oNe May enjOy . ThiS iS part of snagging list i am compiling 

( and no, I know where caps lock is 😄

 

 

With strawberries and cream

Link to comment
Share on other sites

14 hours ago, Norm55 said:

My new boat has a canaline 38 engine.  In conversation with another owner i noticed the exhaust runs level, then down to exhaust manifold. Without a rise in pipe from the point it exits the hull, is there not a possibility water could run in and straight down into exhaust manifold, causing engine to hydraulic and seize ?  Surely it should have an intial rise to allow water to drain back out ? 

Any thoughts please ? 

Should definitely slope uphill or have a Swan neck. Over the years I have had a number of boats with wrecked engines due to water down the exhaust. Just poor workmanship by the builder/engine installer.

Link to comment
Share on other sites

Thanks for confirming my fears.  I will update you when i can.   It goes back in 2 weeks for snagging works, they have not disagreed with any of my complaints so hopefully all will be sorted 

Link to comment
Share on other sites

  • 1 month later...

Just an update,  all snagging work done with no quibble. Exhaust realined and now having decent fall.  One new problem however is waste tank smell.  No amount of Blue will cure it. Guage says only half full. Also was expecting it to last longer than 6 days with 300 litre capacity tank 

  • Greenie 1
Link to comment
Share on other sites

On 13/06/2022 at 12:38, ditchcrawler said:

With strawberries and cream

 

 

Sounds a right mess to me. 

 

I never liked their boats. Insisting on putting their name on the side is really naff. I dunno why their customers put up with it.

 

 

Link to comment
Share on other sites

1 hour ago, Norm55 said:

Just an update,  all snagging work done with no quibble. Exhaust realined and now having decent fall.  One new problem however is waste tank smell.  No amount of Blue will cure it. Guage says only half full. Also was expecting it to last longer than 6 days with 300 litre capacity tank 

We can go 3 weeks on a 330L waste tank with a macerator toilet, perhaps longer if we were really parsimonious with the flushing. If you have a macerator with this a new EM boat, are you using the large flush every time, if you are then try and economise on the flushing, especially after a wee, just empty the toilet and do not flush it.

 

Is the waste tank smell coming out of the vent pipe outside the hull or can you smell it inside the boat. Do you have a leaky connection in the waste pipe plumbing or the vent plumbing, is the waste tank vent pipe connected to the hull fitting or just hanging loose inside the boat. Has proper sanatory pipe / hose been used, if not smells could be leaching out, with equipment shortages is someone taking a short cut in using whatever they can get their hands on. In my recent new boat the builder had wrapped the sanatory hose in foil tape as an extra barrier, not sure if this is effective or not but seems like a good idea, and all hoses have been double clipped for extra security and leak tightness.

Link to comment
Share on other sites

Thanks for suggestions.    Er indoors double flushes all the time as sometimes we are " getting our own back " on eco flush. 

 

The smell is a putrid but plastic smell, not just drains.  Inside only, stick my nose down the outside tube and no smell except blue.   I have taken bed up looked underneath with camera. Dry sawdust on floor suggests no leak  .  First thought was vent pipe was poor fit. They say no...and they put gaffer tape round it.  But it is also coming from wardrobe, where filter is.  They have replaced 2 NR valve, saying i need to empty it more often.   Guage still only indicates half full on the 8 th day.   Smell is also not consistent, sometimes worse than other times.  Pipes are wrapped in Vetus Sanitary hose. 

Begining to wish had joined cassette brigade 

 

 

Link to comment
Share on other sites

is it a plastic tank with an inspection hatch on top, if so make sure that the 'O' ring seal has been fitted. you learn these things from experience.

Link to comment
Share on other sites

If you have plastic hoses (not pipes) between toilet and tank, and again from tank to pump out fittings be aware that some makes are very poor quality and go porous to gasses. Even the good quality hose can pass smells after a number of years. Others with such toilets seem to recommend changing the hoses for rigid pipe. Make sure there are no bends in any hose where effluent can lay.

 

Personally I would do away with the filter and pipe the breather through the hull. It sounds like yet another case of insufficient breather capacity on the tank plus the use of blue.

  • Greenie 1
Link to comment
Share on other sites

10 hours ago, Norm55 said:

Thanks for suggestions.    Er indoors double flushes all the time as sometimes we are " getting our own back " on eco flush. 

 

The smell is a putrid but plastic smell, not just drains.  Inside only, stick my nose down the outside tube and no smell except blue.   I have taken bed up looked underneath with camera. Dry sawdust on floor suggests no leak  .  First thought was vent pipe was poor fit. They say no...and they put gaffer tape round it.  But it is also coming from wardrobe, where filter is.  They have replaced 2 NR valve, saying i need to empty it more often.   Guage still only indicates half full on the 8 th day.   Smell is also not consistent, sometimes worse than other times.  Pipes are wrapped in Vetus Sanitary hose. 

Begining to wish had joined cassette brigade 

 

 

Between pump-outs, is the boat left unused for any lenght of time, 1-3+ days?

If so I've found that filling the bowl twice with clean water, flushes the pipes and vacuum pump clear of contents, leaving only clean water in any puddles.

We do this if the boat is left more than 24 hrs.

 

Bod

Link to comment
Share on other sites

On my boat the original owner had the boatbuilder replace the flexible pipes between the macerator toilet and tank with solid plastic ones because he could smell them. No smells now.

 

Is your toilet a dump through? If so they all smell when the flap in the bowl is opened, especially in hot weather.

 

No amount of blue will overcome this and if bleach has been used to clean it will really smell as it kills of the "good" bacteria as well as the bad.

 

 

Link to comment
Share on other sites

17 hours ago, Norm55 said:

 .  But it is also coming from wardrobe, where filter is.   

Why do they fit filters, it must be a very week link rather than a vent pipe straight from the top of the tank outside

Link to comment
Share on other sites

My exhaust is also horizontal. Can I create a swan neck by cutting 18" out and fitting a flexible exhaust pipe supported from the underside of the cruiser deck by a couple of steel cable ties? I've got about a foot of height above the existing exhaust pipe. 

 

This sort of thing.

https://www.ebay.co.uk/itm/131335394556?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=hCHpdOI-SM-&sssrc=2349624&ssuid=SV_sF0T7SiS&var=&widget_ver=artemis&media=COPY

Edited by blackrose
Link to comment
Share on other sites

31 minutes ago, Norm55 said:

They fixed mine via an exhaust clamp fixed to underside of deck . This gave it more angle.  No swan neck. 

Did that not transmit a lot of vibration and noise to the deck?  So they bent the flexy to move the pipe?  Not a good idea in my book.

Link to comment
Share on other sites

1 hour ago, Norm55 said:

They fixed mine via an exhaust clamp fixed to underside of deck . This gave it more angle.  No swan neck. 

 

Yes that's what I mean, more angle. I guess it would need something more substantial than steel cable ties. 

Edited by blackrose
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.