Blocking off all oil supply and returns and packing the timing case with grease is likely to cause excessive heat, failed front seal and high pressures on the teeth addendums such they would ultimately fail.
The steel gears are not that noisy, certainly no louder than the tappets(unless you are too tight on the tappets). Strategically located oil jet will lessen any noise, open out the jet (SLIGHTLY) will help with the oiling. Opening out to far would affect oil pressure to mains and bjg ends as the oil jet is on the oil pump main rail outlet.
Cleaning the oil rails and jet will have the greatest gain but that needs to be part of a full strip down with the rear blanking plug removed so you can gun brush the rail.
So:
• no grease
• cleanliness
• good quality oil
• correctly positioned oil jet
• timing case sealed correctly
Should have no issues then but if you still hear the steel gears then perhaps fitting the OE fibre ones would help?
Russ
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