Quote:
Originally Posted by chamilun
hey Scnell,
As you demonstrate, there are betters to say that the instructions could be tweeked, or the bearing has inherent limitations, than the way the above poster presented this, no matter if true
or not. It would *seem* that Wayne/etc may disagree with the assertions you make, but perhaps
they would like to post and clarify the issue.
All I know is I own 2 of their books, and they have been highly invaluable to me. There are multiple instances where my car was slightly different, and itd be nice to see revisions made as
far as certain changes with model updates, but the instructions for what I've used have been
at least helpful due to the quality photos and explanations.
wasnt trying to start a war. Just show some respect for the site owners  |
Just to put your concerns to bed, at the behest of another long time poster and well known Porsche technical data website owner, I am currently in direct communication with Wayne about reoccurring problems the instructions published for the bearing in order to help future users not run into the same brick wall that previous users have encountered. As we have had to bail out refits gone wrong, both on multiple websites, as well as in the shop, we have seen the exact same problems crop up too often to be a coincidence.
As for the bearing kit they sell, as I know who the source it from, and have spoken with the supplier about the kit, I know exactly which bearing it is, and the reasons why the kit was developed; it was to be a low cost alternative to the ceramic hybrids that LN and Jake developed. While the Pelican bearing may have some improvements in the seal materials, it is in all other dimensions the same as the factory single row bearings. And if you have read at length the data published in the IMS lawsuit, from Porsche's own data, the single row bearing is the weakest design, with at least an eight times greater probability of failure as the factory steel dual row design it replaced. On that basis, replacing the factory steel single row with a duplicate still leaves the car owner with same odds of failure as the bearing they removed, and installing the single row replacement with a spacer in place of the factory dual row bearing actually significantly increases the statistical probability of a future failure.
To Pelican's credit, I have never seen their bearing kit promoted as an "improved" bearing, but just as a low cost alternative replacement. And as Porsche did not offer the OEM bearing as parts item (factory replacements were originally only available as an assembled IMS shaft, and then later as the oversized bearing only, again as an assembled shaft; both at a cost of over $1,000 per shaft), it offered an alternative pathway to those considering replacing the bearing only at a lower price point.