View Poll Results: Poll: Have you had bore scoring on your 997.1 or 997.2 engine?
Yes, 997.1 (05-08 MY)
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143
14.44%
Yes, 997.2 (09-12 MY)
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18
1.82%
No, 997.1 (05-08 MY)
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526
53.13%
No, 997.2 (09-12 MY)
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303
30.61%
Voters: 990. You may not vote on this poll
Poll: Scored cylinder failure for your 997, Y or N? tell us (yr, 997.1 or 997.2)
#421
Drifting
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Well said, @G.I.G. Seems like you've been doing the right thing as far as maintenance. Since the PPI, have you pulled the sump to see if there has been any visual changes to the bores after 2 years and 10k miles? I'm in a very similar situation and will be doing this after having driven about 8k miles. It will be nice to have a data point that I can reference.
#422
Rennlist Member
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Yes 997.1 smoking and ticking at 68K used about 1.5 lt of 0w-40 mobil one (crap oil) in 40 0r so miles, light scorring #6 cyl but enough... solution...FSI 4.0 engine ...that was the fix before it screwed up my summer. . look at my two other forums about this..that's all
#423
Three Wheelin'
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1.5 quarts every 40 miles?
#424
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Well said, @G.I.G. Seems like you've been doing the right thing as far as maintenance. Since the PPI, have you pulled the sump to see if there has been any visual changes to the bores after 2 years and 10k miles? I'm in a very similar situation and will be doing this after having driven about 8k miles. It will be nice to have a data point that I can reference.
The following users liked this post:
plpete84 (03-12-2021)
#428
Former Vendor
#429
Former Vendor
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There’s an excellent video of this exact situation at www.rennvision.tv
search for “used oil analysis and a failed engine”
People put too much stock in wear metals. I can see mechanical wear in other ways.
#431
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I also forgot to mention that I do cut open my oil filters and they have been free of debris. Again, it's just one data point of several.
#432
Rennlist Member
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Makes sense. But if the aluminum particles are too big to show up on a UOA, am I wrong in assuming that you would have fairly advanced stage bore scoring at that point with the aforementioned symptoms (sooty exhaust pipes, a spike in oil consumption, possible ticking noises, etc.)? My UOA's are just one of several trends/data points that I monitor. Oil consumption (which has been very consistent since I purchased my car 2 years ago) is another.
I also forgot to mention that I do cut open my oil filters and they have been free of debris. Again, it's just one data point of several.
I also forgot to mention that I do cut open my oil filters and they have been free of debris. Again, it's just one data point of several.
#433
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![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
My follow-up question: from your experience, can UOA's be an indicator of potential bore scoring before other symptoms occur? The reason why I ask is I'm questioning if I should be doing UOA's after every oil change if the aluminum from the bore isn't detectable due to it's size once scoring has begun.
#434
Rennlist Member
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Good to know. Thanks, Charles. I've been using SPEEDiagnostix for my UOA's purchased from LN Engineering, of course ![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
My follow-up question: from your experience, can UOA's be an indicator of potential bore scoring before other symptoms occur? The reason why I ask is I'm questioning if I should be doing UOA's after every oil change if the aluminum from the bore isn't detectable due to it's size once scoring has begun.
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
My follow-up question: from your experience, can UOA's be an indicator of potential bore scoring before other symptoms occur? The reason why I ask is I'm questioning if I should be doing UOA's after every oil change if the aluminum from the bore isn't detectable due to it's size once scoring has begun.
#435
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Got it. I'll continue to monitor those levels with my UOA's. Thanks.