Etx cat manifold problem

[moomba88]

Hello everyone i'm new to the forum, Im from Kuwait and own a 2010 moomba lsv with an indmar 340hp salt series engine.Im far away from any indmar dealer and my moomba dealer isnt really helpfull and lack knowldge about indmar engines, hopefully i will get some help from you guys..

I was doing annual service on the engine and when i turned the engine on after changing oil i heard a loud noise coming from the left etx manifold right at the end circle where it meets with the exhaust with a little water/coolant leak.
I opened the parts up and found that end circle of the etx has coroded and obvious gaps/holes are what causing the problem.I will attach some pics to make what Im talking about clear..

What i would like to hear is that this is covered under the warranty! If not please i would like some recomendations about what to do ? Shall i weld or patch the holes? Is a certain type of welding needed for this type of exhaust manifold? Or should i just email indmar and get a new one shipped to kuwait?

About what caused this problem i think it might be because of me using the throttle when in reverse or something else Im not sure.
I also operate my boat in salt water all the time and it has 280hrs on it.

I would appriciate any input or help thanks in advance.image.jpgimage.jpg

[jmb]

If I had to guess, it would be salt water issues. In my experience with salt water in past with my other boat, I was replacing exhaust manifolds and risers every 3 to 5 years. I flushed the boat after every use. If it's a salt water issue, I doubt Indmar would cover it. This is just my opinion. I quit salt water but I realize you may have no choice.

[moomba88]

I definetly agree salt water caused this problem, i just dont understand how saltwater got to the manifold as i have the salt series (closed cooling) engine.Yes we dont have any fresh water lakes only sea water creeks.
Thanks for the input Jack.

[beat taco]

You have the full fresh water system with one price exhaust risers that use coolant, therefore no salt water should be in there. Sounds like a warranty issue.
How does the heat exchanger and zinc anodes look?

[beat taco]

*One piece* auto correct got me!

[moomba88]

Hey Jake my heat exchanger looks great and the anode is still above half length, but how could the anode relate to this?
I will be trying to reach indmar myself i guess my moomba dealer doesnt even answer the phone.
Thanks for the input and merry Christmas.

[rdlangston13]

Salt water is some nasty stuff, it wreaks havoc on us at work


Sent from my iPhone newtys droid killer using Tapatalk

[beat taco]

No relation. Just trying to understand the condition of the boat overall. From the severe break at the edge of the weld I think it has poor penetration. Tough to tell from just a picture but it seems possible that the rust is a result of them leaking once they cracked and then eventually severely failed. Total guess. I'd be shipping them to indmar and getting their expert opinion. I guess the question is who would you want removing them? Indmar can probably help there too.

[moomba88]

I guess i'll be contacting indmar after the holidays, hope to get back on the water asap.

[jmb]

I think salt water still has to go through the risers and all even though it is a closed loop system. I may be wrong but I think it may be the case. Start your boat with a fake-a-lake and if water is coming out of the exhaust then it is raw water not closed loop water if that makes sense. Not totally sure how all that works.