I posted this on another thread but figured it might interest someone on this thread.

I saw this product on Jay Leno's Garage that looked interesting called "Lab Metal High Temp". It is a liquid metal puddy-like substance that you can coat on cracked manifolds, cross overs, headers, etc. to fill in and permanently seal the cracks. You coat it on less than 1/4 inch and let it air dry for 12 to 18 hours then you bake it by running the car for an hour to cure it. I am looking to test this product when my power log eventually cracks.

Here is the link to the video
http://youtu.be/RWisGeUpHHc

Just search for "lab metal high temp" on your favorite search engine and check for prices.

If anyone has a cracked manifold and would like to try this method of resealing please try it and let us know!

If anyone wants to try it as a cheaper or easier solution if the leak point is easily accessible.