Opps .....An unexpected event ......Theres always something to hold you up .....
A bad or weak casting can give you some real headaches.
I noticed the casting was cracked and a very thin casting wall
How to fix it?
Use a high temperture ceramic metallic paste.
I used"Pyro-Putty 1000"
This stuff is works very well. JB Weld is also a good product you can use.
Mix to a toothpaste consistency apply to a clean grease free surface and let air dry overnight.
The result speaks for itself.
Here is the crack ....a little sanding and a slight re-application with a acid brush. You can mix it a
little lose to let it flow.....
This stuff looks like, feels like, sands like ....even smells like Aluminum.....
Use it sparingly ...If you make a mess ....Not to worry ...after it dries get a sharp chisel and carefully scrape it away..
You can use a Dremel with a sanding disc or roller or just sand by hand. Only use what you need to avoid sanding all day.
You can re-apply every 2 hours.....
I have tested it with carb cleaner, Brake cleaner, acetone, trichloroethane 111, gas and diesel fuel. It holds up very well.