Exhaust nut & Heat Tube

Unknown

Hi, I am replacing my cracked exhaust manifold on my 1929 Hudson

Sedan and my exhaust nut shatter while taking it off. I heated it up

red hot and allowed it to cool, then with a spanner wrench on the

nut, it broke into several pieces. It appears it is made of cast

iron. Does anybody have an extra? Is anybody making new ones?



Also, I am replacing the heat tube from the exhaust manifold to the

intake. What's up with the little thin collars to hold the pipe in

place? I had a new pipe made but the collars are a little loose on

the pipe and it will leak exhaust gas out. Does anybody know how

this was to originally seal?

Thanks for your help!

Rick Mann