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zaayer replied to the thread New exhaust manifold advice.

I had a professional welder give it a try and he said that the impurities that have been absorbed into the casting were too much. He...

Mar 14, 2025
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zaayer replied to the thread New exhaust manifold advice.

The only part that is currently showing a problem is my starboard manifold. The area around the O2 sensor is weak. I have found one on...

Mar 14, 2025
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zaayer replied to the thread New exhaust manifold advice.

I bought the boat used and had no idea what I was getting ont wth a cat engine. This boat has around 200 hours and runs great. I talked...

Mar 14, 2025
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zaayer replied to the thread New exhaust manifold advice.

Those manifolds seem to be for a smaller V8 than the 8.1. The part numbers don't match up. Would you try to stick with the catalyzed...

Mar 13, 2025
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zaayer replied to the thread Spray of water from exhaust manifold above O2 sensor.

Update. I had someone look at it and they think the manifolds are coming to the end of their life. Now I need to find some replacements. :(

Mar 12, 2025
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zaayer posted the thread New exhaust manifold advice in Volvo Penta I/O & Inboard Gas Engines & Outdrives.

I have a 2012 Volvo Penta 8.1 GiC-Q 400HP catalyzed engine. My manifolds are coming to the end of their life. The parts for the...

Mar 12, 2025

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