Quote:
Originally Posted by E92Fan
The honest truth is that we have no idea why there is such abnormal wear. Yes the car lives a lot of its life on the Nurburgring, but equally it is exceptionally well maintained and regularly inspected. The Nurburgring doesn't actually pose that many challenges to an engine - if anything, a circuit like Laguna Seca is more demanding on an engine in terms of oil lubrication and starvation because it's a much smaller track with greater frequency of corners within the same time frame.
The engine is now being loaded up with data logging equipment so I can directly measure things like oil pressure and exhaust gas temperatures.
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What are the ring end gaps on the pistons you just pulled? We often see in newer factory engine builds cylinder wear of this kind on engine used for performance reasons. We find that oems are gapping the rings very tight for emissions reasons which can lead to the ring ends butting against each other then pushing outward to the cylinder walls and creating massive scoring. Seems to be what could be going on here.