You've seen those Looney Tunes cartoons where a leak springs on a pipe, and Daffy or Wile E. or some other ill-fated, animated animal plugs it with his hand. Then a leak springs elsewhere, then elsewhere again and again and again until the character is drowning and our 8-year-old selves are rolling…
JB weld.
Would that make a GRM trifecta of Macguver repairs? 1. Duct tape 2. Wire ties 3. JB weld
I used 2 of the 3 yesterday.
JB weld for sure. A lot of older dirt bikes use aluminum or magnesium water pump housings that get very pitted and eventually leak like that, and since you can't buy parts anymore, it's pretty standard fare to goop it up and then grind it back to the right shape. Bonus: the pitting provides a nice rough surface for the JB weld to adhere to.
I believe you should be able to restore the old part with electrolysis. You just need to use an aluminum sacrificial part.
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