Re: got a hole in my water jacket
We repaired one just as you described on my friends 40. The hole showed up after we had the block cleaned. We turned the block up on its side so the hole was pointing down. Mixed up two tubes of JB Weld and pushed it in the hole then smeared some on the outside of the block and had a piece of sheet brass big enough to cover the hole and clamped it to the block and let it cure. That was 20 years ago and it’s never gave any problems.
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