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      01-27-2013, 06:23 PM   #61
pal
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Drives: Z4 M Coupe
Join Date: Nov 2007
Location: Seattle, WA

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Quote:
Originally Posted by Finnegan View Post
I'm not particularly surprised by this, PAL showed similar wear after 50 track days as well. (But I am very happy you posted this, it's great information!) I simply look at this as a maintenance cost associated with track use, not as something to get overly concerned about. This serves as a great heads up for those of us who use the car in this manner. I suspect that if we were to take a look at any engine with 5K track miles it's going to show wear in some areas. FI, even more so.

...

If you're using the car at the track, it's wise to keep records of track miles, temps, and change intervals. Goes w/o saying that more frequent oil changes are a must. Even a street car would benefit by going no more than 4K miles based on the UATs I've seen posted here. Personally I'm changing out my oil every 3 track days since I typically run in hot conditions.

My shop also recommends an increased volume oil pump (VAC Motorsport) for the S54, as they think that at high-revs under track conditions the S54 could use some help. (They've done this for their S54 powered race car.) When I do the bearings, I'm doing the pump as well.
Posted all my oil analysis data for the 14K miles and 16 track days since bearing change on my bearing thread. Here is the report for this thread as well. Looking at the numbers, I would venture and think that 40K miles is probably a better time interval to change these out for a car that sees regular track use (10-12 days per year or more). And some sort of objective data (like Blackstone) along the way may be used to adjust the 40K mile interval to sooner or later.

I love this car and this motor and want to keep tracking it for at least another 75K miles so want to be on top of any issues proactively.

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