Quote:
Originally Posted by Walter White
I have been running the single row bearings on a test jig to see how they are failing and may have something that may be interesting. With the standard single row bearing, the cage is usually made of two strips of metal riveted together to form the cage. My testing has shown that this type cage comes apart after only 10 to 15 minutes at about 5K rpm (no lubrication). So I transplanted a W type, or crown type cage used in the double row bearings into a single row bearing and ran it at 5K for 30 minutes with no signs of cage failure, and the balls still have a mirror finish (no lubrication). I am going to take the bearing apart to examine it and then get it back on the test jig for more running.
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So if I run my engine with no oil, at the RPM that would spin the IMS at 5k RPM, your testing shows that it will last about 2.5 hours? (The bearing, not the pistons)
Seems more people change water pumps more often than IMS. Maybe test those?
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