Quote:
Originally Posted by feelyx
Yes, I know it isn't, post 52 sorta explains this, and what I am doing.
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I understand what you are doing, but the speed you are running the bearing at is actually making the bearing happier than it would be at a low rpm and isn't subjecting the seal to environmental operating conditions that effect its life. Most IMS bearing failures occur at idle or low engine rpm (cruising in top gear at 55-65 mph).
If it is the purpose of the test to evaluate the seal's integrity, duplicating typical operating conditions of at least temperature of the seal (if you aren't going to attempt to match the loads) would be of critical importance. We know that these engines run oil temperature of at least 15-20F over coolant temperature in the most mild of operating conditions. Using a heat gun or another source of heat at the bearing to get it up to say, a minimum of 210-220F (250-300F is possible in these engines) would be advisable, as that's the temperature Porsche is trying to get the oil to in normal operation to vapor off water from the crankcase, as that extends oil life and reduces the formation of acid in long drain intervals.