Quote:
Originally Posted by JST
I understand the theory behind the LN bearing (to the extent that a liberal arts guy can). I just wonder how that theory works in practice. How much validation testing did they do?
Probably it works fine. Does it materially reduce the risk of the bearing failing? I guess? But the sample size of cars with failed bearings is already small (3-5 percent?). The number of cars that have had the LN bearing is even smaller.
All I'm really saying is that this whole thing is shrouded in hysteria and mixed motives. Porsche doesn't want you to know how big a problem there is. LN naturally benefits if you think the problem is enormous. no one, afaik, with an unbiased perspective has any visibility into the full scope of the problem.
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When my orig IMS bearing came out, it was fine and the ball bearings were in great shape. But I figured this since my car was driven and had normal oil changes.
Now I just treat it like I do any German water pump: it's a wear item.
The pricing in the 20s makes more sense to me.