View single post by normv
 Posted: 01-06-2007 10:33 pm
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Joined: 08-07-2006
Location: Sydney, Australia
Posts: 46

I know one of my engine's which was rebuilt under the original warranty in Australia has a Plastic plug in this location and another earlier engine I have doesn't so mabey it was a warranty addition or appeared on later cars as the one which has it to have a proper shaped plastic fitting glued in Looks like it is meant to be there. Many engine use the engine oil to cool the valve springs and stems particularly on the exhaust side so I suggest this is to flood the area with oil for cooling.