911 GT3 operating hours vs mileage
Discussion
There was a thread a while back where Steve Rance gave some views on what the N/A GT3 engine can take. And basically to not be put off by the earlier rev ranges, the engines can take a lot more abuse than that. Getting to range 4 does mean it's definitely had a miss-shift, but only one according to the low ignitions and quite a number of hours ago is not really something to be overly concerned about. If it was quite a few ignitions and in range 5 or 6 then yes I'd be more concerned. Range 1-3 is nothing to worry about, 4 I'd be more concerned if the ignitions were high (in the thousands) and 5-6 you need to think more carefully.
S1MMA said:
There was a thread a while back where Steve Rance gave some views on what the N/A GT3 engine can take. And basically to not be put off by the earlier rev ranges, the engines can take a lot more abuse than that. Getting to range 4 does mean it's definitely had a miss-shift, but only one according to the low ignitions and quite a number of hours ago is not really something to be overly concerned about. If it was quite a few ignitions and in range 5 or 6 then yes I'd be more concerned. Range 1-3 is nothing to worry about, 4 I'd be more concerned if the ignitions were high (in the thousands) and 5-6 you need to think more carefully.
A far too sensible and pragmatic approach, we all know that engines with any rev ranges are knackered and not worth even 30% of a car with all 0s. 
This GT3 sounds a bit fishy but surely a full inspection by a decent garage can provide some clues?
So, some progress. The car in question has been to Porsche for an inspection, and amongst other good feedback from them, it turns out the ecu logfile sent by seller of the car, (in turn sent to him by his mechanic as saved on his computer) was out of date - by some 2 years and 150 running hours. So the logfile as read by Porsche states over 210 running hours since the incident, and over 620 hours in total - so the average speeds and the rest of the story now fit.
This is good news, the car has indeed been warranted twice since the incident (not Porsche but a decent independent), and will be again.
And I didn`t really want an R8! (Although I was kidding myself I would have been just as happy with one).
This is good news, the car has indeed been warranted twice since the incident (not Porsche but a decent independent), and will be again.
And I didn`t really want an R8! (Although I was kidding myself I would have been just as happy with one).
civiclegend said:
Sadly momentum carrying the revs over the threshold.
For the record when no input power exists either clutch or sparks the engine cannot continue to increase its RPM. It's a bit like saying if you can throw a ball really really hard it continues to accelerate after it's left your hand.IF that's what you were saying -- just I've heard this misconception before. "If you take off with your foot on the floor the sudden increases in revs is so fast that the revlimiter can't react fast enough to stop overrevs" sort of thing.
Also I remember reading a piece from 911 virgin about hours and it seems around 30mph is on the mark for UK cars, and I'd be surprised even in Germany if that can be improved upon by 100%
(haha just read the last page of the post -- I'll leave my reply here anyway but of course some is now moot)
civiclegend said:
Its a Swiss/German (having spent half its life in each) car. So it could conceivably have done some serious Autobahn smashing, but those that drive those roads know they're rarely that fast... pretty jammed up, much like the UK, much of the time!
In Switzerland you struggle to get beyond 40 mp/h average over a longer time. Hence the average speed you mention does not compute
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