good news on my new 997s
03-11-2011, 12:57 PM
#1
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good news on my new 997s
I bought about a week ago. Kindof a little nervous about the purchase, cause I pretty much bought is without a PPI (yes I know, Im a big dummy and I dont want to hear about it!) (disclaimer: I didnt even know what a ppi was before this week). Took it to an indie shop with a porsche trained mechanic who used to work the dealerships, but is no longer with porsche.
and the results were....drumroll please....
error codes=0. Overrevs=zone1=0 zone2=0 zone3=0 zone4=0 zone5=0 zone6=0.
60,000 miles. 10,000 mile oil changes. so it as a daily driver, yet he never missed one shift (or his joyriding son). Hopefully he didnt lug it around too much, but overall things checked out well.
also had a nice discussion with the mechanic who had extensive porsche training/ large dealership experience, yet as an indie, had no gag order. He seemed optimistic about the engines in general. Evidently, the sky really isnt falling quite as bad as some make it out to be.
So in conclusion, I'm a big idiot, but might not have done too bad after all. My day went from "Im gonna sell this thing today at carmax.." to... "H&R springs and aftermarket exhaust."
R
and the results were....drumroll please....
error codes=0. Overrevs=zone1=0 zone2=0 zone3=0 zone4=0 zone5=0 zone6=0.
60,000 miles. 10,000 mile oil changes. so it as a daily driver, yet he never missed one shift (or his joyriding son). Hopefully he didnt lug it around too much, but overall things checked out well.
also had a nice discussion with the mechanic who had extensive porsche training/ large dealership experience, yet as an indie, had no gag order. He seemed optimistic about the engines in general. Evidently, the sky really isnt falling quite as bad as some make it out to be.
So in conclusion, I'm a big idiot, but might not have done too bad after all. My day went from "Im gonna sell this thing today at carmax.." to... "H&R springs and aftermarket exhaust."
R
03-11-2011, 01:33 PM
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R Congrats on the 997 purchase! Sounds like you picked up a really nice one! How do you know there was a joyriding son, or that just a hunch?
How about some pictures of the new ride!
I was wondering about the overrevs which everyone mentions on here. Is this something that is done on the MT cars? Also isn't there a rev limiter on the car that would prevent overreving the engine?
Sorry I'm somewhat new to the electronics which monitor the engines on these cars.
How about some pictures of the new ride!
I was wondering about the overrevs which everyone mentions on here. Is this something that is done on the MT cars? Also isn't there a rev limiter on the car that would prevent overreving the engine?
Sorry I'm somewhat new to the electronics which monitor the engines on these cars.
03-11-2011, 02:47 PM
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Thanks! I'll get some pics up once I get it lowered!
I'm new to these cars too. My impression (& someone correct me if Im wrong) is that they have an electronic rev limiter, which prevents damage from hitting the gas too hard, but the real danger is missing a shift (say mistakenly shifting down to 2nd geat when going too fast) which would cause a mechanically induced overrev instead of an electronically preventable one.
as for the joyriding son. totally a ferris bueller/risky business inspired conclusion.
Ron
I'm new to these cars too. My impression (& someone correct me if Im wrong) is that they have an electronic rev limiter, which prevents damage from hitting the gas too hard, but the real danger is missing a shift (say mistakenly shifting down to 2nd geat when going too fast) which would cause a mechanically induced overrev instead of an electronically preventable one.
as for the joyriding son. totally a ferris bueller/risky business inspired conclusion.
Ron
03-11-2011, 03:05 PM
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03-11-2011, 03:33 PM
#9
Burning Brakes
03-11-2011, 04:10 PM
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"
If overspeed entries are found and if the difference between the current hourmeter and the status when the last overspeed event was recorded is less than 50 operating hours, there is a high probability that the damage was caused by overspeed event(s).
The value “50 operating hours” should be seen as a guide. The possibility of engine damage occurring much later due to previous overspeed event(s) cannot be ruled out.
Rev ranges:
Rev range 1: 7,200 -1 ... to 7,500 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 2: 7,500 -1 ... to 7,700 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 3: 7,700 -1 ... to 7,900 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 4: 7,900 -1 ... to 8,400 -1
⇒ Maximum permitted engine speed clearly exceeded; engine damage probable.
Rev range 5: 8,400 -1 ... to 9,500 -1
⇒ Maximum permitted engine speed very clearly exceeded; engine damage very probable.
Rev range 6: over 9,500 -1
⇒ Engine damage has generally occurred."
If overspeed entries are found and if the difference between the current hourmeter and the status when the last overspeed event was recorded is less than 50 operating hours, there is a high probability that the damage was caused by overspeed event(s).
The value “50 operating hours” should be seen as a guide. The possibility of engine damage occurring much later due to previous overspeed event(s) cannot be ruled out.
Rev ranges:
Rev range 1: 7,200 -1 ... to 7,500 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 2: 7,500 -1 ... to 7,700 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 3: 7,700 -1 ... to 7,900 -1
⇒ Maximum permitted engine speed exceeded; engine damage possible.
Rev range 4: 7,900 -1 ... to 8,400 -1
⇒ Maximum permitted engine speed clearly exceeded; engine damage probable.
Rev range 5: 8,400 -1 ... to 9,500 -1
⇒ Maximum permitted engine speed very clearly exceeded; engine damage very probable.
Rev range 6: over 9,500 -1
⇒ Engine damage has generally occurred."
03-11-2011, 04:13 PM
#12
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Or....(easier to read). This does NOT apply to Turbo's.
The 997-1 DME records the following rev ranges:
Range 1: 7300-7500 RPM
Range 2: 7500-7700 RPM
Range 3: 7700-7900 RPM
Range 4: 7900-8400 RPM
Range 5: 8400-9500 RPM
Range 6: 9500-11000 RPM
The 997-1 DME records the following rev ranges:
Range 1: 7300-7500 RPM
Range 2: 7500-7700 RPM
Range 3: 7700-7900 RPM
Range 4: 7900-8400 RPM
Range 5: 8400-9500 RPM
Range 6: 9500-11000 RPM
03-11-2011, 05:21 PM
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p.s. I was secretly hoping for at least 1 range one infraction.... maybe even 1-3(cause that would mean he was an enthusiast) ...but a straight of bagels, I will not complain!
... p.s. I think he was running 5-40 or 10-40 or something. I cant get the oil pressure off of 5 bar unless I'm idling, so even if he lugged it, there was good oil pressure. Anything above 2000 rpms and the oil pressure needle is maxed as if it was cold oil. Unless thats indicative of needing a new oil filter... which its gonna get next week.
... p.s. I think he was running 5-40 or 10-40 or something. I cant get the oil pressure off of 5 bar unless I'm idling, so even if he lugged it, there was good oil pressure. Anything above 2000 rpms and the oil pressure needle is maxed as if it was cold oil. Unless thats indicative of needing a new oil filter... which its gonna get next week.
03-11-2011, 05:24 PM
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Is this monitoring on all more recent Porsches or only the 997?