R33 Series 2 1997 RB25DET
Rattle from cold coming from top end.
Doesn't reduce, as it gets warmer.
Never run for more than a minute as it sounds scary.
Oil Cap off whilst running has no oil sloshing or splashing inside.
Cam lobe on show is almost dry
Oil Pressure on guage seems to stay a little elevated
Normal Service History and Oil/Filter changes
Oil is a little dark but not too bad
Noise all of a sudden came on according to Driver
Car has now been parked gathering dust
160k on odometer.
Blocked Oil Feed Galleries?
Is there a screen filter installed somewhere in the head/block or into camshaft followers ?
Where does the oil enter the Camshafts
Any ideas... apart from Oil Flush and Change.
Is there something that could be blocking the oil access to the top of the head ?
Very perplexing...