Im running water cooling to the turbo, but alot of ppl do with no issues...
Heads off, nothing major to reveal, some corrosion on the gasket between the waterways and the fire rings but nothing into the combustion chamber. Gonna get the head checked and skimmed, maybe ported too and put it all back together.
Once it's all back together i'll try a turbo bonnet to aid airflow and cooling.

Are people always using genuine headbolts?