I was told by a mechanic friend of his method when installing headers of any
brand. (And he said some brands DO leak more than others.) He soaks the gasket
that goes between header and head overnight in a bucket of water. Weigh it down
it sits under water. Install water-logged gasket per specifications. Soaked
is dried/baked to shape. Re-torque when dried. In a few instances he has had to
use 2 gaskets per side, but says that was for really cheap and usually
owned units re-installed. He swears by this method. Just my input....
Ed in Mich.
Don Simmons wrote:
> I have a 350 in my 62 and bought Hedman headers for it. After getting it
> running and a little time on the engine, the headers leak at the heads badly.
> I've tried doubling up the gaskets which helped a little but they still leak.
> Anyone have any ideas? I guess next I will remove the headers and see if I can
> grind the flanges down a little but this is ridiculous for brand new parts to
> be this bad right out of the box! On the upside,the 2 1/2 exhaust with
> Flowmaster mufflers sounds excellent!!!! Thanks for any input!
> Don Simmons
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959