Water leak from block on 403 engine

[Geoff Dowdle]

Mike,
a block stitcher can possibly only repairs cracks , not holes .
But it will be interesting to see what he recommends .
Maybe he can enlarge the hole to a point where there is metal say around 5mm thick , then tap a thread in the hole and make a screw in plug similar to the alloy plugs originally in the block.

After a repair is completed I recommend you use a sealer additive in the radiator fluid . In Australia there are a number of different types/brands available from Spare parts shops . They all should stop minor leaks but not holes. Follow the instructions on the packet.

Pls post the outcome of your completed fix.

Geoff