No bad noises at all. Only issues I have had is a
oil leak in the intake manifold so I change the gasket, well a friend of mine did the work as he was in town visiting. Sadly it was then pissing out the front and rear so I changed it again myself and it as a slight leak out the rear only.
I have also have a slight over heating issue but this is sadly common on the west coast Cobras so I am working through all the fixes.