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I'm looking to purchase a 2018 991.2 GT3. This is my first Porsche. Can someone please help me interpret the over rev report for this car? Thank you, Leo
Definitely, someone missed a shift and chose a gear too low for vehicle speed. Maybe ok, but all things being equal, maybe safer to find a car without this issue (unless Porsche certified warranty).
9,624 rpm is pretty high (but I’ve seen worse that still ran ok).
There is a process by Porsche to CPO a range 4-6 car which involves compression tests, oil samples and a few other things. It has to be over 200 hours since the last range 4-6 to be a candidate.
if it passes those tests, which it seems it has (otherwise it couldn’t be CPO) the car should be perfectly fine. I would ask if it went through this validation process and if so you can be completely at ease.
I wouldn't be all the worried about the motor itself as long as it's been a while since it happened, but... current buyers are obsessed with DME reports and it will probably be a pain to sell. I'd pass for that reason alone.
I wouldn't be all the worried about the motor itself as long as it's been a while since it happened, but... current buyers are obsessed with DME reports and it will probably be a pain to sell. I'd pass for that reason alone.
Probably because every comment on BaT seems to request a DME for a Porsche. No other car, just the Porsches. It's annoying when the folks not even bidding on the car ask...I wouldn't want to sell a car on there with all the silly comments and questions. My car is too high mileage anyway...
At this point, with over 5000 more miles on it (and CPO) I would feel personally comfortable IF you thought you were buying at a price that reflects that.
Big win if you plan on keeping it a long time and can buy it a bit cheap. If you don't hold on to cars for a while, then, I'd think that discount has to be really big, because if this market ever reverses, then the price hit on this car will be higher than market avg price declines.
I suspect the motor is fine. But unless you are getting a deep discount and are willing to deal with the hassle of getting out of a car w/ a DME like that when you go to sell, it's not worth it.
To me, it's not just about the 5-6 over-rev. It's about how it was driven. The 5-6 over-revs is just a reflection, just one aspect of what the car has gone through. I would pass.
There is a process by Porsche to CPO a range 4-6 car which involves compression tests, oil samples and a few other things. It has to be over 200 hours since the last range 4-6 to be a candidate.
if it passes those tests, which it seems it has (otherwise it couldn’t be CPO) the car should be perfectly fine. I would ask if it went through this validation process and if so you can be completely at ease.
This is correct. There is a nice summary of how to read over rev reports by 911virgin.com (I'll try to find the link latter).
It seems that in 2020, Porsche changed their tune on Stage 3-4 and Stage 5-6 over revs. Before 2020, Porsche did not worry to much about stage 3-4 over revs and would CPO the car, but refused to CPO stage 5-6 over revs. They then changed, and decided that stage 3-4 over revs could be problematic and thus all engines would need compression tests, oil analysis, regardless of when the over revs occurred (as sgroer has mentioned already) if there were any stage 3-4 over revs, but would also consider CPO for stage 5-6 over revs if the incident occurred > 200 operating hours ago.
Thus, if the car is CPO'd, then I would assume that the engine has been tested thoroughly, but may people, myself included, would immediately exclude that car. I think if there were only a few cycles of over rev in stage 3, I could consider it if I really 'needed' that particular car, but with stage 4- and stage 5 over revs, I would have a problem spending the kind of money required for a GT3 and then have the mental anguish of worrying something is not right especially after the CPO is finished. I think a GT3 crate engine is at least $40K, plus install, so that is the 'gamble' if something were to happen in the future.
08-23-2021, 08:46 PM
Help with over-rev report
