DME rev report

[Anker]

Range 1 is not an issue, the car was built for that and the fuel cutoff prevents the revs from going higher.

Range 2 is bad. Usually happens when you downshift at high revs. When you release the clutch the transmission pulls the revs above the red line. Even 20 crank revolutions can fatally damage the engine. I was in a DE last year when a Cayman inadvertently downshifted to second instead of upshifting to fourth. Less than 20 crank revolutions, but the engine was toast!

[Dave80GTSi]

A year ago I had an LN Engineering dual row ceramic IMS bearing installed by the only LN-certified installer located in the State of Ohio.

Here was their initial review report, as noted on the repair order:

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Camshaft Deviation: #1=(-2.20), #2=(-0.89)
Over Revs "Range 2" = 1092/617.9h (>7800)
Total operating hours = 975.4h

NOTE: Vehicle did not meet minimum standards for
IMS Retrofit pre-qualification due to prior over revs
in ECU and does not qualify for warranty program.
Owner was informed prior to repairs and agreed to
proceed acknowledging that there is no warranty for
the following repair by LN Engineering.

----------

Since the over-rev time point was well before my ownership, there was obviously nothing that I could do about it, and so I went ahead with the repair as noted.

[flynavyj]

Did some more online digging, that shows Range 1-3 as essentially normal on the Cayman. Above range 3 and you start running in the possibility of mechanical damage.

1-3 being into fuel cutoff, however above that is mechanical over-revving of the engine exceeding approximately 7900 rpm.

BTW - Do appreciate the replies, and am passing all info along to my friend. He's been searching for a bit, and has sent three cars for PPI's during the last six months. Two out of town, and now this one near home. Says car is very clean overall, one owner...obviously one of the biggest concerns on this rev report is that the over-rev was so recent in the car's history.

One he'd checked out before this, had considerably more overruns, but they were long in the vehicles past, and the PPI inspector stated that he had no concerns on the reliability of the engine moving forward considering the history of engine since the over rev, and the total time on the engine.

We shall see what he does.