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      04-06-2020, 11:19 AM   #56
Scharbag
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Drives: 2011 E92 M3
Join Date: Oct 2017
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2011 BMW E92 M3  [0.00]
Quote:
Originally Posted by Helmsman View Post
What a lovely position to be in when what ever you write about competition is taken as fact by the audience. Amen.
Now now, BE is simply stating facts.

1) Sn/Al bearings are simply harder than Pb/Cu - this is easily verified as true. There is also a great deal of information about this available online that shows that Pb alloy bearings are superior to Pb free bearings (see attached from an RoHS exemption request made by Caterpillar)

2) Neither 088/089 nor 702/703 bearings offer adequate nominal clearance as per all major bearing manufacturer's recommendations for high RPM engines

3) 088/089 and 702/703 shells can result in very tight tolerances based on the data collected and published

All of the data is available for your independent review. All of the raw datalog files were shared by AutoTalent. The entire investigation was well documented and shared to the community.

As my old boss used to say" "In God I trust, everyone else show me data."

Happy motoring!
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