patently

Hi all,

I'm in the market for a 997.1 turbo coupe MT. Looking at an '07 997.1 turbo MT at Gaudin Porsche in Las Vegas https://gaudinporschelv.com/inventor...+Black+1272523. 84.5k miles but they report the car is in great shape and they recently performed the 80k service. They ask $60k.

I summarize the overrev report as follows:

Range / # Ignitions / Operating hours
1 / 1788 / 2085.200
2 / 187 / 2085.200
3 / 55 / 277.900
4 / 3 / 277.900
5 / 0
6 / 0

Operating hours counter: 2087.400

I'm a beginner at this level of detail. Can you help me understand the significance of this information? I have elsewhere read that any stage 4 or higher overrevs is a reason to politely decline the purchase - is that a good rule of thumb?

Thanks in advance for your help. I'm learning daily on this site.

Jim

Skwerl

That report is fine. Doubly so considering the miles - I'd say it's led a gentle life. The range 4s are ancient history (1800 hours ago) and extremely minimal.

Also, "decline anything with 4s" is too broad and Chicken Little in my opinion. There are plenty of good TTs leading healthy lives with 4/5/6s out there, and you have to take into account how long ago the revs were, too. It's just too individual - 3 range 4s from 1800 hours ago is nothing, while 1000 range 4s from 30 minutes ago may need some more consideration. I bet every car you've bought until now didn't have a rev report and you had no idea if there was a botched shift somewhere in its story.

JG 996T

The 3s and 4s happened long ago. Some of the 1s and 2s probably just happened on a test drive.

Poppahay

Am I missing something. How do you hurt an engine that has a rev limiter? That's what the limiter is for.

Skwerl

Miss a shift at high speed (5th to 2nd, for example) and the engine can rev over the limiter.

Poppahay

If you shifted from 4th to 1st, for instance, you could over rev the engine. That is true. But not the case your talking about. If you miss a shift it's going to kill the engine before it revs over the limit. In any auto, tip or PDK you can't make it go over at all. So in the case of a incorrect downshift in a manual it COULD over rev.
I can't believe the amount of concern I see many people have in regard to taking these engines to red line or the limiter. The engines can easily handle many trips to redline without damage. Many Porsches that spend a good bit of time on the track see redline frequently and they live long lives.

Macster

The word I get is an auto/tip/PDK can be overreved. The sceario involves driving the car on a road with a down grade and the transmission in a gear with the auto shifting disabled. If the engine is taken to redline the transmission won't upshift but the car's speed can increase due to the steepness of the down grade and over rev the engine.

My advice when buying a used Porsche is to always have the engine run time and overrev counters with the counts and the time stamps of the last event read.

USNA12

Are there any aftermarket warranties to look at if purchasing a car with over revs? Do they even check DME if its not a CPO car? In example, will Fidelity cover a catastrophic engine failure if you have hits in Range 5?


Looking at a car that has approx. 200 ignitions(0.5 seconds) in range 5 over 110 hours ago. Just trying to cover my bases since the dealership has been dropping the price like crazy lately.

strato58

Not sure you have anything to worry about after 110 hours. I think most say over 50 and you are fine. I believe if something bad was going to happen it would occur at the time of the over rev.

Poppahay

Macster those are interesting facts. I'm interested in looking more into this. Thanks for the info.