|
Just because you have a high mileage engine doesn't mean your home free with the IMSB. Partial bearing seal failure is one of the main reasons IMSBs break. Leaking seals allow oil to wash out the bearing's grease over an extended time period, but the oil flow through the leaking seal isn't enough to fully lubricate the bearing.
Low mileage cars see more failures because their seals sit in acidic oil for extended times and degrade. For various reasons, seals degrade more slowly in high mileage cars so one sees failures happening less. Eventually, high mileage cars will see problems too its just nobody seems to know when.
If you do nothing else, it's probably a good idea to remove the outer seal of the OEM IMSB when your in there changing the clutch. Personally, I wouldn't and didn't stop there when I changed my clutch. If your doing the work yourself, it just the cost of parts that you're saving. I'd bet some Forum member would be willing to lend or rent the special tools to you.
|