29-09-2018, 05:53 AM
Head it is not water coming up stud threads but seepage across gaskets, I always seal all studs, and the seepage is obvious when reading the gasket.
Colin yes good thought, the waterways are often corroded so plugging and re drilling them may help. What I can not get my head around is why the change, for me this is a new issue that has manifested in the last 10 years, and why do some people report having no problems whatsoever. Perhaps there are a lot of gaskets currently seeping and going unnoticed because the cars do comparatively low mileage, perhaps when a few more engines have the heads removed for valve grinds we will start seeing more issues. But the question remains as to why it happens on sound flat blocks, and if there is an issue how we fix it. My feeling is there must have been a change in the composition of the gaskets which prevents them compressing evenly under our modest stud tensions. Currently I am having reasonable success with a light coating of Hylomar spray, but I know some old hands who swear by aluminium paint.
Colin yes good thought, the waterways are often corroded so plugging and re drilling them may help. What I can not get my head around is why the change, for me this is a new issue that has manifested in the last 10 years, and why do some people report having no problems whatsoever. Perhaps there are a lot of gaskets currently seeping and going unnoticed because the cars do comparatively low mileage, perhaps when a few more engines have the heads removed for valve grinds we will start seeing more issues. But the question remains as to why it happens on sound flat blocks, and if there is an issue how we fix it. My feeling is there must have been a change in the composition of the gaskets which prevents them compressing evenly under our modest stud tensions. Currently I am having reasonable success with a light coating of Hylomar spray, but I know some old hands who swear by aluminium paint.
Black Art Enthusiast