"Blown" Ford 351

Belzona, that's some kind of moisturizing facial creme isn't it?

Good luck, hope the rest of the engine is good

Hope your skills are good too

When you think about it, it may not be the textbook best surefire way to cure your problem, but what do you have to lose except a little time and money on that expensive face cream.

Once again.................good luck

Your cooling system sees about 20 psi at high rpm's, just so you have an idea of the pressure involved.

Don't forget, cleanliness and preparation is the key.

And....................There's no H after the preparation

Take a few minutes and read up on lock n stitch products.
I have seen first hand how well they work putting cast iron back together .
They repair thousands of engines per year. Most are commercial applications in very expensive equipment.
You drill a hole though your crack, insert their plug and then screw a special bolt into their plug. As you tighten the bolt it sucks the crack area tight and then snaps off leaving a flush surface.
Sounds odd but is proven technology. There must be Utubes of it being applied..
I first saw it almost 30 years ago.

William777 wrote: . I see the port on the timing cover is blocked. Can you describe the water's path through the engine from intake to exhaust?

I'm not sure what port you're talking about on the timing cover but the flow path for the water is from the raw water pump to the thermostat housing. From there some goes out the exhaust and some goes into the circulating pump and into the block through 2 ports on the timing cover.

It enters the front of the block on each side and then goes up through the heads and comes out the front of the heads into the water passage in the intake manifold that leads to the thermostat housing. There is a water passage on the back of the heads but it is blocked by the intake manifold which has no passages for water in the back. It was designed this way so that either head can be used on either side of the engine.

In the thermostat housing there is mixing happening when the thermostat is open with some of the water going to the exhaust and some back through the circulating pump to start the path through the engine again.

So.... you always have water going through the exhaust manifolds and when the thermostat is not fully closed you have water flow through the engine

When the thermostat is closed you'll have an engine full of water being heated up till the thermostat opens and flow starts

This would be for the typical small block Ford marine engine that has no bypass hole around the thermostat. Many times people get confused and think that the thermostat is what lets water into the engine but as you can see it lets hot water out of the engine

A picture of what's blocked would be good

Just fill the cooling passages with cement. No more leaks. More heat = more power.

I think you've been sniffing too much Preparation H myself

The really amazing thing though is me and Pete agreeing on how to do a backyard hack repair on your block.

Assuming the piece came out as 1 piece, epoxy that sucker in and reinforce over it with more epoxy.and maybe some reinforcing fabric.

After it's dry, hook up the water say 3 quick prayers of your choice and turn the key and see what happens

KENO wrote: After it's dry, hook up the water say 3 quick prayers of your choice and turn the key and see what happens

Then go and get yourself another block.

JB Weld.

We all agree on the best route to go being a new block and it seems to me the wax thing would be a disaster.

I can handle the ridicule.

It came out in several small pieces. My latest plan is to use a piece of metal screen that has 1/2 inch openings as a sort of rebar with marine epoxy. It's going to work. I'm thinking, we've sent men to the moon, I can repair this little hole.

Only reason its gone this far is everyone is bored and bit punchy each fall after the boats get out of the water.

William,
Is that the moisturizing face cream Ken suggested or did you go with his other idea of using Preparation H?

Anozleb is what you need, specially formulated for reverse rotation

I hope it works. I like to see people try this kind of thing. I myself probably would not but I am certainly hoping it works out. Good luck!