Over-Revs on PDK GT3
#17
I'm here. I've been watching the thread and planning to reply. Just have been busy with another car in my garage. Damn front sub-frame!!!
I appreciate all the comments and wanted to say thanks. Having been in and out of P cars for 20+ years, I definitely understand about over-revs, PPI's, track-time consumables, etc. The car I mentioned at the top of the thread is being offered very inexpensively. He is basically pricing it at the dealer's offer as a trade in. It does need bearings,CL's, hubs (I think) and one or two other things, but the price is hard to ignore even if I have to put a fair sum into it (and most of the work I can do myself).
My concern was the very uh... "lofty" ...amount of stage 1 over-revs. I think this indicates there has been a lot more track time on this car that he is willing to admit. Based on that, I would say that getting a DME report on a PDK is not a bad idea at all simply because it could indicate the amount of track time.
At this point, I'm probably going to skip this car. Perhaps the '18MY will come down a bit by the time we get back to driving weather in the spring. Still, I'm surprised that a non-tuned PDK car gets stage 1 over-revs. You'd think Porsche would help retain resale value on a car by cutting throttle before stage 1. I realize that stage isn't a big deal though. I've had stage 4 cars that I ran hard on the street for 30,000+ miles without a hint of problem. Also had a track car with plenty of stage 3 revs and again, never had a problem.
Thanks to everyone who posted. I will have more questions as I move toward my next track car purchase.
I appreciate all the comments and wanted to say thanks. Having been in and out of P cars for 20+ years, I definitely understand about over-revs, PPI's, track-time consumables, etc. The car I mentioned at the top of the thread is being offered very inexpensively. He is basically pricing it at the dealer's offer as a trade in. It does need bearings,CL's, hubs (I think) and one or two other things, but the price is hard to ignore even if I have to put a fair sum into it (and most of the work I can do myself).
My concern was the very uh... "lofty" ...amount of stage 1 over-revs. I think this indicates there has been a lot more track time on this car that he is willing to admit. Based on that, I would say that getting a DME report on a PDK is not a bad idea at all simply because it could indicate the amount of track time.
At this point, I'm probably going to skip this car. Perhaps the '18MY will come down a bit by the time we get back to driving weather in the spring. Still, I'm surprised that a non-tuned PDK car gets stage 1 over-revs. You'd think Porsche would help retain resale value on a car by cutting throttle before stage 1. I realize that stage isn't a big deal though. I've had stage 4 cars that I ran hard on the street for 30,000+ miles without a hint of problem. Also had a track car with plenty of stage 3 revs and again, never had a problem.
Thanks to everyone who posted. I will have more questions as I move toward my next track car purchase.
#18
I would think you will only have range 1 over revs on track if you are shifting yourself. I wouldn't expect it to do that in auto mode. There are plenty GT3's in the market. I'm sure you could find another one.
#19
#20
With the GT3, 9,000 rpm is perfectly fine, but 9,001 rpm is a Stage 1 over-rev. So naturally, it’s easy to accumulate thousands of these (every ignition is counted and there are 6 of these for each revolution and revolutions happen very quickly at 9,000 rpm.
You just have to get comfortable with the fact that a car with no Stage 2 or higher over-revs has not been over-revved at all...
The following 2 users liked this post by GrantG:
GCBC (08-08-2020),
Larry Cable (06-28-2023)
#22
It really is a non-issue with a PDK car and the delay likely had nothing to do with that...
#23
#24
The issue is that the redline and the hard rev limit are exactly the same. Many cars set the rev limit several hundred rpm above redline, so you can have a gentle rev limiter.
With the GT3, 9,000 rpm is perfectly fine, but 9,001 rpm is a Stage 1 over-rev. So naturally, it’s easy to accumulate thousands of these (every ignition is counted and there are 6 of these for each revolution and revolutions happen very quickly at 9,000 rpm.
You just have to get comfortable with the fact that a car with no Stage 2 or higher over-revs has not been over-revved at all...
With the GT3, 9,000 rpm is perfectly fine, but 9,001 rpm is a Stage 1 over-rev. So naturally, it’s easy to accumulate thousands of these (every ignition is counted and there are 6 of these for each revolution and revolutions happen very quickly at 9,000 rpm.
You just have to get comfortable with the fact that a car with no Stage 2 or higher over-revs has not been over-revved at all...
#25
I guess it shows that it’s been used hard if you get 10,000 (but not necessary abused).
Some people probably never exceed 8,000 rpm. How many ignitions at 8,000 rpm would concern you?
#26
Seems like all this over rev question is meaningless unless something was done to the car to potentially void the 10yr/120K motor warranty (like a tune??). If the motor is going to have problems from hitting the rev limiter too many times I would think those problems would show up well before the warranty is up. It's hard to take a .1 in manual mode all the way to 9K without hitting the limiter occasionally. I personally can't time the shift that close because after 8K all hell is breaking loose and watching the tach could be disastrous.
The following users liked this post:
Larry Cable (06-28-2023)
#27
man sorry for my ignorance, new to this platform, to DME's etc. redlining the car daily for me is not a concern. My question is if engine hits 9001 rpm how many ignitions that will yield to the counter? Is the 2355 ignitions reflected in the DME report means the car overspeed to range 1 2355 times?
#28
man sorry for my ignorance, new to this platform, to DME's etc. redlining the car daily for me is not a concern. My question is if engine hits 9001 rpm how many ignitions that will yield to the counter? Is the 2355 ignitions reflected in the DME report means the car overspeed to range 1 2355 times?