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Are these seal seats replaceable? It looks like the one at the top (cylinder 5) is fine but 1 and 3 are mangled. This explains the misfires as they had water in them.
Fellow brother "aholbro" has a nice write up with color glossy photos on how he repaired his valve cover.
Here you go:
https://www.jaguarforums.com/forum/s-type-s-type-r-supercharged-v8-x200-15/%2Agroan%2A-does-3-0l-have-magnesium-cam-cover-corrosion-problem-like-x300-167613/#post1617385
Last edited by joycesjag; Nov 25, 2018 at 01:11 PM.