Hi,

Is it common for cossie heads to get porus ??

As I took my head in to get some welding done to the combustion chamber and the fella said that the head was quite badly corroded in the water galleries.

He's now cleaned up the corrosion and found the head to be quite porus in some areas and thus he is having difficulty welding it.

What can be done in a situation such as this ? is there a special treatment that can be done to the head to solve this problem or is there a special way of welding it ?

Any advise will be greatly appreciated.

Thank you
Damion.