Does the front oil gallery plug on the U20 cylinder head serve any useful
purpose?
The machine shop pulled it out during the head rebuild. From what I recall,
there was a 10mm plug in the oil gallery, with a small hole drilled in it.
The plug sits behind the upper timing chain tensioner, and oils the
tensioner through a small hole in the thin gasket, and into the tensioner.
So it looks like the gasket and tensioner blocks the flow of oil anyway,
and only allows a small amount of oil into the tensioner.
I'm wondering if I should bother getting and putting an oil plug in, and
might just mount the gasket and tensioner without it. Any problems doing
this?
Fred - So.SF
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