[Schurkey]

Originally Posted by F ROCK

x2 on the KW. I used the version in the can.. Follow instructions to a T.
Works real well.

Beware cans that have been "on the shelf" too long. All the fiberous stuff ends up as a lump in the bottom of the can.

Might want to dump the contents of the can--including the lump at the bottom--in a yard-sale blender to chew-up the "lump".

I used KW to seal-up a welding pinhole in my Olds 455 heads. Had a urine-stream leak from a previous repair.

Took over an hour of running to fully-seal that leak, not the "20 minutes" like it said on the can of KW. However, it's been sealed for a decade.

When you drain out the sealer and water after the block has quit leaking, be sure to remove the block drains as well as the radiator drain, so you remove as much as possible of the sealant.

Originally Posted by STEELCITYFIREBIRD

the question that would always be in my mind is are their any other cracks that were missed.

Yup.

[Heybuck]

Originally Posted by TransAm400

No signs of impact around the area. Talked to the machine shop this morning and he has already offered to machine a new block at no cost or possibly reimburse me for stitching. It’s just going to put me back at least a month. I guess there would be no adverse effects to try epoxy on the crack and a liquid sealer before I remove and replace?

I think the real answer to this is to accept the offer from the machine shop to either stitch the block or machine a new block. Their offer is indicative they are accepting they have made an error. Once you start filling the block with sealers or some other gunk, you have lessened the liability of the machine shop to make it right. I mean its not like you have had this block running for years and a crack shows up, in this case the crack is there from before the first start.

Good luck with the claim.

[lust4speed]

Don't forget about Murphy's Law. If you glue it together it will be fine until you are a great distance from home and then split open catastrophically.

[steve25]

I find it great that you where able to seal your pin hole, and for the lenght of time that it has held up for , but to me sealing a pin hole and a 3" long crack are two greatly different things to accomplish!

[critter]

Agreed. I was under the impression he was looking for a temporary fix until a new block was procured. But if the builder is offering to pin it, seems like that's the right thing to do. Or replace the block. Either way, his car is down again.