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Over revs - range 4

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Old 07-03-2017, 01:17 PM
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Crimson Nape Racing
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Default Over revs - range 4

I am a long time 911 owner, but they have all been air cooled, so I don't know much about these new ones. I am looking at a 2011 GTS with 48 ignitions in range 4. If I did the math right, that is only a fraction of a second. Is that something to worry about? This car has been for sale for a while and I suspect that may be why. I would be stretching my budget for this and sure don't want to buy a potential problem.
Thanks.
Old 07-03-2017, 01:30 PM
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Skwerl
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When did they occur? Unless they happened in the last few hours, the car should be fine. All of your air cooleds could have range 4 equivalents on them and you'd never know.
Old 07-03-2017, 01:33 PM
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LexVan
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Not a deal killer. Like Skwerl mentioned above, we need the time stamp and total engine hours. Sounds like the guy slightly miss shifted.
Old 07-03-2017, 01:34 PM
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Macster
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Originally Posted by Crimson Nape Racing
I am a long time 911 owner, but they have all been air cooled, so I don't know much about these new ones. I am looking at a 2011 GTS with 48 ignitions in range 4. If I did the math right, that is only a fraction of a second. Is that something to worry about? This car has been for sale for a while and I suspect that may be why. I would be stretching my budget for this and sure don't want to buy a potential problem.
Thanks.
How long ago did the overrevs occur? The overrev report should include the overrev counter totals, the engine run time at which the last event occured and the total engine run time. The Porsche techs tell me they like at least an hour's engine run time with no signs of any issues after an overrev event.

This is part of what motivates me to urge anyone interested in a used Porsche to give it a thorough road test. Start with a test ride over a 15 mile long test route which is chosen to allow the driver to demo the car as you intend to use it.

Then back at the starting place you swap seats and drive the car over the same route and drive the car the same way.

With the extended idling from a cold start as you check out the car's exterior and the test ride then test drive followed by some more idling as you then confirm the radiator fans come on on their own as the coolant gets hot enough this should have the engine running around an hour.

A Porsche is not a car to buy on a limited budget. While one doesn't need Bill Gates money to own one of these cars you have to keep in mind the cost of the car when new. Even if you buy the car for half of what it cost new it is still an expensive car. Servicing, insurance, running costs are not insignificant. My local dealer doesn't offer discount servicing even though my cars are 15 and 14 years old.

The general rule for used car buying is to have set aside 10% of the car's purchase price for "just in case". With a Porsche I'd recommend this be 20%.

Even though your check out of the car finds no issues a water pump can develop a leak at any time. A fuel pump can quit at any time. A tire puncture can have you having to buy at least 2 tires. And so on. You need some money set aside so if something happens you can afford to get the car fixed rather than have to let it sit while you accumulate the money necessary.
Old 07-03-2017, 01:35 PM
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it happened at 1650 hours and the car has 1873 on it now.
Old 07-03-2017, 01:39 PM
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Originally Posted by Crimson Nape Racing
it happened at 1650 hours and the car has 1873 on it now.
If all else checks-out, buy it.

223 hours ago.
Approx 8,000 miles, minimum.
Old 07-03-2017, 01:46 PM
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Originally Posted by Macster
The Porsche techs tell me they like at least an hour's engine run time with no signs of any issues after an overrev event.
Are you sure? I thought in the past you preached 50 hours????
Old 07-03-2017, 05:01 PM
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Originally Posted by LexVan
Are you sure? I thought in the past you preached 50 hours????
Probably depends on if we're talking about the Boxster or the 996 Turbo.
Old 07-03-2017, 09:17 PM
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Range 4 on a 997.2 = > 7900 and < 8400 rpm, not a problem that long ago.

This is a good informative read - http://www.911virgin.com/porsche/rev-range-information/

Enjoy!



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