Just ran a DME report on my 7.2 RS..question:
Discussion
Am thinking of selling my 997 RS.2 and have seen all sorts of concerns re over revs, do had a report run by my dealer when it was serviced. ( Car is a 2010 with 7,000 miles and is perfect.). I had once done the dreaded 5th to 2nd downshift at the Nurburgring, but I caught it immediately and was curious if it would show up. Apologies if this has all been covered in the past.
Anyway the report is below. My questions are:
(1) What does each range 1 through 6 mean in RPM?..I do not redline my cars ever,but certainly run up to 7000 often.
(2) Number of ignitions at speed^maximum speed range 1 reads 20...not sure what that is.
Report shows nothing beyond range 1 so no over revs,but was curious to know how you could reach (say) range 6 unless missing a downshift.....
Anyway the report is below. My questions are:
(1) What does each range 1 through 6 mean in RPM?..I do not redline my cars ever,but certainly run up to 7000 often.
(2) Number of ignitions at speed^maximum speed range 1 reads 20...not sure what that is.
Report shows nothing beyond range 1 so no over revs,but was curious to know how you could reach (say) range 6 unless missing a downshift.....
Rev ranges - 997 GT3:
Create the VAL before deleting the fault memory. Overspeed events are documented as follows in the VAL:
Rev range 1: 8,400 -1 ... to 9,200 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 2: 9,200 -1 ... to 9,400 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 3: 9,400 -1 ... to 9,600 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 4: 9,600 -1 ... to 10,000 -1
⇒ Maximum permitted engine speed clearly exceeded; engine damage probable.
Rev range 5: 10,000 -1 ... to 11,000 -1
⇒ Maximum permitted engine speed very clearly exceeded; engine damage very probable.
Rev range 6: over 11,000 -1
⇒ Engine damage has generally occurred.
Create the VAL before deleting the fault memory. Overspeed events are documented as follows in the VAL:
Rev range 1: 8,400 -1 ... to 9,200 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 2: 9,200 -1 ... to 9,400 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 3: 9,400 -1 ... to 9,600 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 4: 9,600 -1 ... to 10,000 -1
⇒ Maximum permitted engine speed clearly exceeded; engine damage probable.
Rev range 5: 10,000 -1 ... to 11,000 -1
⇒ Maximum permitted engine speed very clearly exceeded; engine damage very probable.
Rev range 6: over 11,000 -1
⇒ Engine damage has generally occurred.
Popolou said:
Slickhillsy said:
What do the "Operating Hours Counter Reading at overspeed range 1 / 2 / 3! mean?
An approximation of when it occurred.For example, if you had 10,000 range 1 ignitions, the last being 100 hours ago, you could go out and redline the car to the limiter for a second or so and when you read it again you'll see 10,500 range 1 ignitions and the time counter at a fraction of an hour below the current reading for the car's total hours from new.
thegoose said:
It's actually only the time the most recent event occurred. I.e. the car could have gone into that rev range a number of times, creating the total number of ignitions shown (3 per revolution of the engine by the way), the time counter just shows the most recent time it happened.
For example, if you had 10,000 range 1 ignitions, the last being 100 hours ago, you could go out and redline the car to the limiter for a second or so and when you read it again you'll see 10,500 range 1 ignitions and the time counter at a fraction of an hour below the current reading for the car's total hours from new.
Does hitting the rev limiter record a rev range 1 on a 997?For example, if you had 10,000 range 1 ignitions, the last being 100 hours ago, you could go out and redline the car to the limiter for a second or so and when you read it again you'll see 10,500 range 1 ignitions and the time counter at a fraction of an hour below the current reading for the car's total hours from new.
VPD255M said:
Does hitting the rev limiter record a rev range 1 on a 997?
No. The rev limit is below range 1.
Al's table (posted above) is incorrect. The other table posted is obviously not a GT3. My table is not the 997.2 - but unless the rev limit is different then it probably isn't any different.
[quote=agtlaw]
No. The rev limit is below range 1.
That is helpful . I am trying to understand the very first line of the report I posted above . My dealer says all is very good; however, if you look at the first line it seems to show 20 instances opposite range 1, and I just can't imagine I would have redlined it like that. Likely I just do not understand the report.
No. The rev limit is below range 1.
That is helpful . I am trying to understand the very first line of the report I posted above . My dealer says all is very good; however, if you look at the first line it seems to show 20 instances opposite range 1, and I just can't imagine I would have redlined it like that. Likely I just do not understand the report.
Fair enough, but what I was trying to explain still stands. EFA:
thegoose said:
For example, if you had 10,000 range 1 ignitions, the last being 100 hours ago, you could go out and redline over-rev the car to the limiter for a second or so and when you read it again you'll see 10,500 range 1 ignitions and the time counter at a fraction of an hour below the current reading for the car's total hours from new.
RDMcG]gtlaw said:
No. The rev limit is below range 1.
That is helpful . I am trying to understand the very first line of the report I posted above . My dealer says all is very good; however, if you look at the first line it seems to show 20 instances opposite range 1, and I just can't imagine I would have redlined it like that. Likely I just do not understand the report.
That's 20 ignitions, not 20 times. Literally a small fraction of a second, and possibly (maybe probably) only one instance. That is helpful . I am trying to understand the very first line of the report I posted above . My dealer says all is very good; however, if you look at the first line it seems to show 20 instances opposite range 1, and I just can't imagine I would have redlined it like that. Likely I just do not understand the report.
graemel said:
RDMcG. If I was you I would not cash out just yet. With the current 991 GT3 debacle I reckon 7.2RS prices are only going one way.
In no great hurry as it happens, and am not much of an expert on car investment. I have an attachment to my older RS.1 which I will keep, and then have the 991RS as a contrast in the future . Still, wanted to be very honest with any buyer so that there is nothing hidden. RDMcG]gtlaw said:
No. The rev limit is below range 1.
That is helpful . I am trying to understand the very first line of the report I posted above . My dealer says all is very good; however, if you look at the first line it seems to show 20 instances opposite range 1, and I just can't imagine I would have redlined it like that. Likely I just do not understand the report.
Your screenshot / report shows that your car has the following:That is helpful . I am trying to understand the very first line of the report I posted above . My dealer says all is very good; however, if you look at the first line it seems to show 20 instances opposite range 1, and I just can't imagine I would have redlined it like that. Likely I just do not understand the report.
X operating hours on the engine
20 over-rev ignitions (i.e. a fraction of a second over 9000rpm).
The last over-rev event was at 147 operating hours.
agtlaw said:
Your screenshot / report shows that your car has the following:
X operating hours on the engine
20 over-rev ignitions (i.e. a fraction of a second over 9000rpm).
The last over-rev event was at 147 operating hours.
Many thanks, and of course, I was the guilty party!..caught it in a flash, and have had zero problems. People are sometimes paranoid about this stuff, so best to be straightforward. Nothing serious. X operating hours on the engine
20 over-rev ignitions (i.e. a fraction of a second over 9000rpm).
The last over-rev event was at 147 operating hours.
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