Corrosion on the engine block-to-head surface
#1
Track Day
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Location: Denmark
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Corrosion on the engine block-to-head surface
I have two 4.5 16V engines standing in the corner, the best one of them is going in my boat. One stands with the heads taken off. I removed them half a year ago and put the whole thing aside. There was some strange blue/white build up in the cooling chamber around one cylinder, which I didn't remove, when I stored the engine (yes, should have done that...) Yesterday me and a friend had a look at the engine and I saw that this build-up had creeped onto the top of the cylinder and also onto the piston. When I removed it, I saw that there was some corrosion on the cylinder, marked in the red circle.
What to do about that ?
Is there a hi temp liquid gasket I could/should apply in that spot or do I need to have the surface machined?
What to do about that ?
Is there a hi temp liquid gasket I could/should apply in that spot or do I need to have the surface machined?
#2
Nordschleife Master
High-temp metal fill will work for a while but, eventually, it will burn through and you'll be fixing it later.
#3
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It's not clear on the picture, but unfortunately, there is some pitting, haven't measured how deep, but quite shallow. If it was around a water passage, I would not be afraid to clean it well and use some good liquid gasket. But here, I'm a bit more concerned. Machining the block would probably be the best.