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Author Topic: Main casting repair  (Read 1842 times)

Offline tayto

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Main casting repair
« on: July 29, 2018, 03:35:57 PM »
Rebuilding a '78 Turbo Buick 3.8L Qjet and while removing the leaking secondary well plugs a part of the casting where the secondary rods go broke. I am wondering if there is a repair method for this? Welding, soldering? Would it be sufficient to just use Marine Tex to glue the broken piece in place? Hoping the casting is not scrap as finding a core may be an issue.
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Offline Cliff Ruggles

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Re: Main casting repair
« Reply #1 on: July 30, 2018, 02:56:45 AM »
It doesn't look like there is enough material left to make an effective repair....Cliff
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Offline tayto

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Re: Main casting repair
« Reply #2 on: July 30, 2018, 06:32:13 AM »
I have the piece that broke off it broke fairly flush. what are my options?
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Offline tayto

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Re: Main casting repair
« Reply #3 on: July 30, 2018, 09:32:43 AM »
here are some more pics
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Offline tayto

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Re: Main casting repair
« Reply #4 on: July 30, 2018, 02:55:44 PM »
Cliff is the main body alumnium or zinc doe cast? I may try to just solder this piece back into place. Let me know. Thanks.
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Offline Cliff Ruggles

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Re: Main casting repair
« Reply #5 on: July 31, 2018, 08:29:30 PM »
It will not solder well, it's an cast alloy with zinc in it......
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Offline tayto

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Re: Main casting repair
« Reply #6 on: August 12, 2018, 11:51:05 PM »
Cliff, I ended up using marinetex to do the repair. did at the same time when I installed the secondary well plugs. I used a digital scale to weigh out the marinetex before I mixed it. have not had luck eyeballing it in the past. let it cure for 24 hours and did the soap&water test this afternoon. So far so good, I hope it will last for a while once put back into service.
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