"that motor is very quiet for its age... my 2016 toyota makes more noise."
Agreed, and very powerful. Do anything you can to maintain your original - they are better than replacements. Years ago, mine developed a noise. Took it out, cleaned and oiled it. It's been fine ever since.
Bearings are said to be sealed, well................
I put a few drops of oil on the shaft/bearing point and left it one day. Then inverted it from normal installed position, oiled the other bearing and let it sit.
One reason I keep this car is the HVAC - better than any newer car.
On a 100 degree day, I can get 38F measured at the vent. That + a great fan = happiness.
1994 RMW 80K, clear corners, Gary's cables - battery, headlight, mech fan delete, air pump delete, home plate/first base delete, Bill Harper wiper arm mod, Corvette starter, 1LE elbow, Team SS pipe, K&N filter swiss cheese airbox, throttle body bypass, LED headlights.
All my posts contain 100% recycled electrons.