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04-07-2021, 06:05 AM | #1 |
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How to repair damage to a deck
How can a flathead block deck be repaired? I have a gouge from a valve seat to the coolant port on the sealing area to repair about a 1/4 wide and a 1/32-1/16” deep.
JB weld would be too easy, I don’t think it would hold. Can it be bronzed? A couple dabs with the mig and filed down? Would silver solder be too hot? I’ve repaired an exhaust manifold with a nickel rod on the arc welder but it was much thicker and I would be way to nervous to strike out an arc on the block. Thanks |
04-07-2021, 06:25 AM | #2 |
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Re: How to repair damage to a deck
I would like to see a picture.
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04-07-2021, 07:36 AM | #3 |
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Re: How to repair damage to a deck
Not one of my better days. Fighting stuck valves.
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04-07-2021, 07:41 AM | #4 |
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Re: How to repair damage to a deck
Damage
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04-07-2021, 07:47 AM | #5 |
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Re: How to repair damage to a deck
JB Weld is supposed to be good for up tp 400 degrees F. However if the damage goes into the seat I would put a new insert in that seat. But I would reserve judgement until I could see a photo.
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04-07-2021, 07:51 AM | #6 |
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Re: How to repair damage to a deck
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04-07-2021, 08:58 AM | #7 |
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Re: How to repair damage to a deck
Agreed JBWeld should work fine. A bit more substantial fix might be to paint the gouge with a tinplating solution. Then drip soft solder to fill the void. Jack E/NJ
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04-07-2021, 08:59 AM | #8 |
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Re: How to repair damage to a deck
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04-07-2021, 09:04 AM | #9 | |
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Re: How to repair damage to a deck
Quote:
I like the idea of solder |
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04-07-2021, 12:47 PM | #10 |
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Re: How to repair damage to a deck
I agree with Kay. My old eyes can't discern those unclear photos. Did you use the MACRO setting on your camera for clarity?
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04-07-2021, 02:31 PM | #11 |
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Re: How to repair damage to a deck
More pictures
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04-07-2021, 02:33 PM | #12 |
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Re: How to repair damage to a deck
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04-07-2021, 02:40 PM | #13 |
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Re: How to repair damage to a deck
You have to determine if the crack goes all the way down into the valve chamber before any method of repair can be done ( if possible)
Otherwise you are SOL.
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04-07-2021, 03:35 PM | #14 |
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Re: How to repair damage to a deck
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04-07-2021, 04:08 PM | #15 |
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Re: How to repair damage to a deck
What caused that deep of a gouge? Chisel?
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04-07-2021, 06:07 PM | #16 |
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Re: How to repair damage to a deck
I'm thinking epoxy won't take the heat in that area and will eventually fail. Silver solder doesn't work well for a filler. Brazing with bronze rod may be the best method to fill it without imparting too much heat and distortion. That's a tough spot, due to the uneven thickness and hole edge. Good preheat and slow cool will be the most important things for success.
Good luck!
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04-07-2021, 09:02 PM | #17 | |
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Re: How to repair damage to a deck
Quote:
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04-07-2021, 09:03 PM | #18 |
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Re: How to repair damage to a deck
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04-07-2021, 09:27 PM | #19 |
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Re: How to repair damage to a deck
Solder or brazing likely better than JB weld. Although that is some tough stuff properly installed. Patched a lowerUnit on outboard Motor that lasted years in tough saltwater conditions.
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04-07-2021, 09:31 PM | #20 |
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Re: How to repair damage to a deck
I would stitch it, from the water hole, to just inside the fire ring.
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