Over Rev Report - seeking assistance
12-31-2012, 08:58 PM
#2
Drifting
RANGE 1: 8,400 -1 ... to 9,200 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
RANGE 2: 9,200 -1 ... to 9,400 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
RANGE 3: 9,400 -1 ... to 9,600 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
RANGE 4: 9,600 -1 ... to 10,000 -1
⇒ Maximum permitted engine speed clearly exceeded; engine damage probable.
RANGE 5: 10,000 -1 ... to 11,000 -1
⇒ Maximum permitted engine speed very clearly exceeded; engine damage very probable.
RANGE 6: over 11,000 -1
⇒ Engine damage has generally occurred.
⇒ Maximum permitted engine speed exceeded; engine damage possible.
RANGE 2: 9,200 -1 ... to 9,400 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
RANGE 3: 9,400 -1 ... to 9,600 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
RANGE 4: 9,600 -1 ... to 10,000 -1
⇒ Maximum permitted engine speed clearly exceeded; engine damage probable.
RANGE 5: 10,000 -1 ... to 11,000 -1
⇒ Maximum permitted engine speed very clearly exceeded; engine damage very probable.
RANGE 6: over 11,000 -1
⇒ Engine damage has generally occurred.
12-31-2012, 09:32 PM
#5
What year is this car? I believe the range is different depending on the year. The rev limiter is at 8400 for 07-08' and 8500 for 10-11'.
Is this your car or one you are looking at? If it is yours, I would not worry if it is not having any issues. If it is one you are looking at, I would skip it. Key thing is if there is an issue with the engine, PCNA could deny a claim based on the number of over revs. This is particularly true if an engine replacement is needed. The typical cause for these types of over revs is over aggressive down-shifting at the track.
Is this your car or one you are looking at? If it is yours, I would not worry if it is not having any issues. If it is one you are looking at, I would skip it. Key thing is if there is an issue with the engine, PCNA could deny a claim based on the number of over revs. This is particularly true if an engine replacement is needed. The typical cause for these types of over revs is over aggressive down-shifting at the track.
12-31-2012, 10:17 PM
#6
Rennlist Member
RANGE 1: 8,400 -1 ... to 9,200 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
RANGE 2: 9,200 -1 ... to 9,400 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
RANGE 3: 9,400 -1 ... to 9,600 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
RANGE 4: 9,600 -1 ... to 10,000 -1
⇒ Maximum permitted engine speed clearly exceeded; engine damage probable.
RANGE 5: 10,000 -1 ... to 11,000 -1
⇒ Maximum permitted engine speed very clearly exceeded; engine damage very probable.
RANGE 6: over 11,000 -1
⇒ Engine damage has generally occurred.
⇒ Maximum permitted engine speed exceeded; engine damage possible.
RANGE 2: 9,200 -1 ... to 9,400 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
RANGE 3: 9,400 -1 ... to 9,600 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
RANGE 4: 9,600 -1 ... to 10,000 -1
⇒ Maximum permitted engine speed clearly exceeded; engine damage probable.
RANGE 5: 10,000 -1 ... to 11,000 -1
⇒ Maximum permitted engine speed very clearly exceeded; engine damage very probable.
RANGE 6: over 11,000 -1
⇒ Engine damage has generally occurred.
12-31-2012, 10:37 PM
#7
Nordschleife Master
Would provide you with leverage on a purchase. 81 ignitions at that RPM I think would = a single event. If it is a dealer: leak down and free CPO would be in order. The GT3 engine is very solid. I have seen one at over 100 in third and shifted into second instead of fourth. Popped the pulley but the internals to the engine zero damage. Another part that can give way is the pressure plate. Again if you want a virgin car walk away but you might beat them up on price and terms.
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12-31-2012, 11:25 PM
#8
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Looks like a single event gave all of the readings in range 2-4 at 385 engine hours. At 10,000 rpm, there are 500 ignitions per second, so that event lasted about 0.2-0.3 seconds. Note also that the event was at least 300 engine hours in the past. If the damage had been severe, it probably would have showed up by now.
If it reduces the price sufficiently, it might be worth it. If you don't plan to keep the car a long time, it will make it harder to sell, for the same reason that you are concerned about it. A lot of potential buyers will not consider buying.
Jon
If it reduces the price sufficiently, it might be worth it. If you don't plan to keep the car a long time, it will make it harder to sell, for the same reason that you are concerned about it. A lot of potential buyers will not consider buying.
Jon
12-31-2012, 11:53 PM
#11
Rennlist Member
The key thing is the CURRENT operating hour counter. It's on the first page of the piwis report. What is that number??
Those hours next to the overrevs are when the last overspeed events were registered. So unlike what some of the other posts suggests, it's not that your engine did 300+ hours of range 4. It just doesn't make sense--it'd have blown long ago at those speeds.
PAG guidelines are 50 hours since the last event and you're probably clear. That said they may still deny warranty down the road, so a budget accordingly.
With at least 800 hours on this motor I think you're looking at very well used car that may not have warranty anyways. Budget for an engine rebuild if u buy. Who know there may be a compelling commercial argument there...
That's when the overrevs happened. The bad ones were over 500 hours ago, practically a lifetime ago in engine terms. But yes, I'd seek concessions.
^that.
Those hours next to the overrevs are when the last overspeed events were registered. So unlike what some of the other posts suggests, it's not that your engine did 300+ hours of range 4. It just doesn't make sense--it'd have blown long ago at those speeds.
PAG guidelines are 50 hours since the last event and you're probably clear. That said they may still deny warranty down the road, so a budget accordingly.
With at least 800 hours on this motor I think you're looking at very well used car that may not have warranty anyways. Budget for an engine rebuild if u buy. Who know there may be a compelling commercial argument there...
Looks like a single event gave all of the readings in range 2-4 at 385 engine hours. At 10,000 rpm, there are 500 ignitions per second, so that event lasted about 0.2-0.3 seconds. Note also that the event was at least 300 engine hours in the past. If the damage had been severe, it probably would have showed up by now.
If it reduces the price sufficiently, it might be worth it. If you don't plan to keep the car a long time, it will make it harder to sell, for the same reason that you are concerned about it. A lot of potential buyers will not consider buying.
Jon
If it reduces the price sufficiently, it might be worth it. If you don't plan to keep the car a long time, it will make it harder to sell, for the same reason that you are concerned about it. A lot of potential buyers will not consider buying.
Jon
01-01-2013, 01:43 PM
#12
Burning Brakes
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The key thing is the CURRENT operating hour counter. It's on the first page of the piwis report. What is that number??
Those hours next to the overrevs are when the last overspeed events were registered. So unlike what some of the other posts suggests, it's not that your engine did 300+ hours of range 4. It just doesn't make sense--it'd have blown long ago at those speeds.
PAG guidelines are 50 hours since the last event and you're probably clear. That said they may still deny warranty down the road, so a budget accordingly.
With at least 800 hours on this motor I think you're looking at very well used car that may not have warranty anyways. Budget for an engine rebuild if u buy. Who know there may be a compelling commercial argument there...
That's when the overrevs happened. The bad ones were over 500 hours ago, practically a lifetime ago in engine terms. But yes, I'd seek concessions.
^that.
Those hours next to the overrevs are when the last overspeed events were registered. So unlike what some of the other posts suggests, it's not that your engine did 300+ hours of range 4. It just doesn't make sense--it'd have blown long ago at those speeds.
PAG guidelines are 50 hours since the last event and you're probably clear. That said they may still deny warranty down the road, so a budget accordingly.
With at least 800 hours on this motor I think you're looking at very well used car that may not have warranty anyways. Budget for an engine rebuild if u buy. Who know there may be a compelling commercial argument there...
That's when the overrevs happened. The bad ones were over 500 hours ago, practically a lifetime ago in engine terms. But yes, I'd seek concessions.
^that.
good post - as you say, many other things here mentioned are not fully correct. Yes the 50 hour issue important. However, you can still get a warranty with a car that has had an entry a level 6 - its not impossible. The guidelines of Porsche clearly mention this. Anything above 4 needs to do leak down and compression test plus a few other checks, if these are OK than it shouldnt be a problem. Porsche has just by the way tightened the criterias, from now on everything from 3 onwards needs to do the described procedure.
For me this would not necessarily be a reason not to buy..it depends also on the rest, What car are we talking about exactly?
I know of 997 GT3s having multiple entries in 6 and they are still running perfectly at 80,000km etc..
Im not saying that its good - but to say you cannot get a guarantee with entries in 3, 4, 5, 6 ist certainly - formally - wrong. You can, the dealer has then just to start the additional checks/dismantle engine....
01-01-2013, 03:09 PM
#13
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01-01-2013, 05:59 PM
#15
Nordschleife Master
