| [GMCnet] Pushing against the wind [message #269523] |
Mon, 12 January 2015 19:08  |
Advanced Concept Ener
Messages: 112
Registered: December 2014
Karma:
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Senior Member |
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Running oil temperatures at 250 deg may be fine for a race car that changes the bearings after every race but it leaves no room for error. A blue printed balanced engine probably puts the same stress on each bearing but if it doesn't it could result in a bearing wiping. Bearing temps are usually about 50-75 deg above oil temperature. Most bearings with a bait base material will start to wipe about 325-350 deg. Harder aluminum bearings may not start to wipe until 400 or so but then fail catastrophically by welding to the shaft. Oil lubricates fine at 135 deg. The cost of changing oil more often is cheap compared to loosing bearings or shafts.
On another note the gentleman that just passed must have been a great guy to command as much respect as expressed on this site. It is my misfortune that I didn't get the opportunity to meet or exchange ideas here with.
Sent from my iPad
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