Quote:
Originally Posted by Perfectlap
1. that figure is wrong in that an unknown number of failures were left out.
(I never rely on incomplete data, aka the Enron rule)
2. an actual figure that is accurate is impossible to nail down.
The IMSB failure rate is like guessing heads or tails based on the last 20 flips.
What the others experience has nothing to do with the current condition of your factory original IMSB.
An IMSB that was once 1% can jump to 70% due to host of maintenance and driving variables that changed abruptly. When those figures you cite were calculated the single row bearing fleet was still relatively low mileage as group. The IMSB is not a static issue. Every 2nd, 3rd, 4th and possibly 5th owner maintained potentially different driving and maintenance habits. As the cars get cheaper less attention is given to the cars. Why is this relevant? Because a sealed bearing with no direct oil feeding it is on a timer. That timer speeds up if oil starvation or contamination is not mitigated during mileage intervals that are too long for the quality of oil used.
This is probably the simplest of all the possible engine failures to avoid. Or maybe replacing the water pump every 4-5 years. But the former can only be done when the trans is down which makes doing it a no-brainer.
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True the numbers are not static. But the information comes directly from the manufacture of the solution.
IMS 101
I don't know the values through out the country, I am speaking of my car. 97, 78000miles. New to me. Value 11,000$(CDN). this car is mint with everything working appropriately. Now, average replacement cost is 1500-2000 up here in Canada.
So spend 20% the value of the car on item that is advertised at a 1% failure rate. Even if the failure rate increased 10 fold. The question is spend 20% value of the car for an item that has over a 90% success rate.
Yes I know its only matter of time before the item fails. But, that statement can be made for every single item on that car. We just focus on the IMS.
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