- Dec 7, 2005
- 3,260
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from my experience the hot compression gas eat the cylinder head not water. the hot air flow through the broken gasket and make damage to the head. high water temp ( overheat ) cannot eat alloy head u need very hot air to make it happen.my mech made his conclusion , he said once ur head gasket blows, dont drive it around like that, water n air will keep sipping thru tht broken gasket part n slowly eat the head, head is aluminium only