Bearing Installation Seat, Wet or Dry?
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Bearing Installation Seat, Wet or Dry?
This question has to do with the installation of mains and rod bearings. When the bearings are seated in their slots should they be installed dry or with a smidit of oil? I smear a few drops on the back side of the bearing before I seat them if I plan to store the short block for an unknown period of time. If I plan to fire it very soon I put them in dry. I read it should always be dry to insure heat transfer away from the bearing to the main web. Is this a big deal. I recently installed and fired a back up short block that I assmbled over 5 years ago. I oiled the back side to deal with time and condensation/humidity issues. I do the man and rod cap ends the same way. Again, is this a big or insignificant deal?
OIL ON BEARINGS
I personally clean the back of my bearings with wax and grease remover last thing before i install them.....So they are dry and free from oil and dirt.
I have never used oil on them. I have been told about the oil changing the bearing size but i personally have never did the research to see if it's true. Or the amount it would change the size.
I really cannot see why you would want oil on the back side????
Keith
I have never used oil on them. I have been told about the oil changing the bearing size but i personally have never did the research to see if it's true. Or the amount it would change the size.
I really cannot see why you would want oil on the back side????
Keith
“If I hit you with this you’re going to be numb, that’s why they call them numb-chucks “Si Robertson
I have found that using oil on the back side of a bearing will change the clearances.
using 5w30 decreased clearances .001
using 20w50 decreased clearances .0015
These are not dead set numbers becaused I used plasti ga to check and since plasti ga is just an approximate measurement, not an accurate micrometer measurement
using 5w30 decreased clearances .001
using 20w50 decreased clearances .0015
These are not dead set numbers becaused I used plasti ga to check and since plasti ga is just an approximate measurement, not an accurate micrometer measurement
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