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Weld a cracked GIL manifold?

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Weld a cracked GIL manifold?

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Old 03-03-2019, 01:28 PM
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Default Weld a cracked GIL manifold?

Anyone know if a crack like this can be welded? I live in europe and a new manifold isn’t easy to find here. It’s for my HP500 merc.

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Old 03-03-2019, 02:00 PM
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Notorious for cracking there. Yes can safely be welded/heliarced. Ideally replace but I've had a couple welded over the years without failure.
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Old 03-07-2019, 02:55 PM
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Default Welded and ready to go


Had a friend weld it and I think it looks great
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Old 03-07-2019, 07:00 PM
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Pressure test it.
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Old 03-08-2019, 11:51 AM
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Good job.
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Old 03-18-2019, 07:17 PM
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I have seen them crack there also, I think it's a design flaw. I don't think they expand at the same rate, particularly when run on raw water. Welding up the transfer ports and running the engine closed cooling system helps a bunch.
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