Bonding Wire to SS Exhaust Riser or Elbow

[bdunigan]

Is it recommended to run a bonding wire to a stainless exhaust elbow or riser? DeAngelo recommends this to deter internal corrosion from sea water.

Topic

[bdunigan]

Rob, Tony:

Thanks again for your time and input. Very, very helpful!

[Tony Athens]

At to the bonding wire, you are right, it would do nothing, but also it would hurt nothing in this case.. The main thing, based on his answer, the exhaust is generally safe as long as when he pulls then boat, the bow it lifted  high until the system drains aft until mostly empty..

 

 

[Rob Schepis]

See attached … I was referring to this exhaust.  Isn’t this the port engine?

If the metal components you are concerned with are above the static water line and are thus “empty” when she’s at rest I don’t see how bonding will do much other than maybe let you sleep a little better.

[bdunigan]

Rob, it is the pic angle. I’ve attached a better one. The static water line is 13″ below the bottom of the elbow where it attaches to the turbo exhaust flange. Water does not sit in the elbow or hump hose but does sit in the horizontal portion of the frp tube that runs to the pod…pic attached.

Re 90 degree elbow. I pulled this pic as an example of a bonded elbow. DeAngelo built the elbow for this SeaRay exhaust system. I don’t have any info on engine, boat model, etc.

[Tony Athens]

Where is the static water line in the vessel in relation to the Hump hose lower clamp?  Engine off, sitting at the dock.

The wet 90  elbow the engines turbo  engine–Cummins part or ??   How old is that?

Why were the components replaced?

 

 

Tony

[Rob Schepis]

Wow that Port exhaust setup sure looks flat, do you know the down angle?  Maybe it’s just the angle of the photo?…..  Does water sit in the exhaust components when at rest? (The components you are concerned about bonding)

[bdunigan]

Tony:

I just spoke to DeAngelo and they provided additional info. They said, ‘If an elbow is bolted to the turbo exhaust flange, it does not need to be bonded as it benefits from the bonded engine. If a SS component is placed between two non metal components like hump hoses, it needs to be bonded.’ The picture in my earlier post displays this.

Don’t shoot the messenger!

[bdunigan]

Thanks, Tony, for your reply especially at the late hour. My elbow is pictured below (3281) and has no bonding wire. AFAIK, Sabre doesn’t make this a practice.  I have attached a picture from a larger SeaRay system that I found on ClubSeaRay.com. It seems SeaRay, in some cases, does run a bonding wire to the SS riser or elbow. Of course, everyone I have spoken to including a marine electronics company that is reconditioning my bonding system has NOT heard of this practice. Nevertheless, two different ‘account managers’ at DeAngelo made this recommendation. The only thing I can think of is DeAngelo wants to protect the weld joints.

BTW, I fresh water flush after every run (thanks to you guys) so I am not too worried about salt water corrosion.

[Tony Athens]

Post a good picture(s)  of what they sold you.. 30+ years, 1000’s of exhaust systems later,  and that have NEVER been needed unless ???

[Author]

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