991.2 Over Range 5 and 6 Bad?
07-15-2018, 05:55 PM
#31
Rennlist Member
No I don't think anybody would cover money shifts
07-15-2018, 06:48 PM
#32
Can you you please repost this (with "protip" videos) in the racing section? I have a feeling it will turn into an entertaining thread...
The more serious question is why you're asking THAT question seriously.
it's a ****in Porsche 911. Drive it! If you're not hitting the rev limiter you're not driving you're car. You're simply *****-footing it thinking you're hard.
I hit rev limiter many times in my PDK.
protip: if you keep your throttle pinned to redline in 2nd and 3rd gear for 3 seconds or longer it will stop bouncing off the limiter and smooth out the throttle right at redline for a smoother and natural balance in a corner.
it's a ****in Porsche 911. Drive it! If you're not hitting the rev limiter you're not driving you're car. You're simply *****-footing it thinking you're hard.
I hit rev limiter many times in my PDK.
protip: if you keep your throttle pinned to redline in 2nd and 3rd gear for 3 seconds or longer it will stop bouncing off the limiter and smooth out the throttle right at redline for a smoother and natural balance in a corner.
07-15-2018, 09:40 PM
#33
Why on earth would anyone want to enter a corner with your engine at redline? Am I misunderstanding something? I've been to more than a few DE trackdays, and none of the instructors ever shared this. Maybe they didn't think I was ready for that technique? 
07-15-2018, 10:12 PM
#34
Three Wheelin'
07-15-2018, 10:22 PM
#35
I’m fascinated by this lol... I’m leasing, does anyone know the dealer protocol when taking a car in off lease?
i just can’t see the dealer going to a customer, “sir you over rev’d on such and such a date so we’re going have to escrow $15k - $20k for a potential engine rebuild”.
would love to know the inside scoop on this...
i just can’t see the dealer going to a customer, “sir you over rev’d on such and such a date so we’re going have to escrow $15k - $20k for a potential engine rebuild”.
would love to know the inside scoop on this...
07-15-2018, 10:38 PM
#36
Three Wheelin'
I’m fascinated by this lol... I’m leasing, does anyone know the dealer protocol when taking a car in off lease?
i just can’t see the dealer going to a customer, “sir you over rev’d on such and such a date so we’re going have to escrow $15k - $20k for a potential engine rebuild”.
would love to know the inside scoop on this...
07-15-2018, 11:19 PM
#37
Racer
Excellent point! I'd never really considered this. Rarely do I lease cars (or consider leases for purchase) but it would be interesting to get a dealer's perspective. I'll have to call my salesman and see if he has an opinion!
07-15-2018, 11:51 PM
#38
Burning Brakes
07-16-2018, 12:04 AM
#39
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07-16-2018, 12:37 AM
#40
Rennlist Member
And, of course, a missed shift can result in an engine failure on the spot or down the road. Jerry Woods, a respected engine builder here in the Bay Area, was asked to testify or be deposed on this very subject, and iirc, he said that over-revving an engine can stretch the rod bolts—how much they stretch dictates how much torque value they use, and thus when they are likely to fail. Thing is, they're in there...
Which is why over-rev reports are a beautiful thing.
As to the idea that someone is pussyfooting a Porsche if they don't have any over-revs, that's silly. When I asked for the report before selling my GT4 at 14,700 miles, the service advisor said, "You never go to redline, do you?" when he handed over a report with zero over-revs in all ranges. I looked at him and said, "Oh, I go to redline...a LOT!" Inwardly, I was cringing a bit while waiting for the report, as I let a number of (good) drivers try the car on back roads and a race track...sometimes without me in it. One was a current factory driver, another an R&T writer, but some of the others were just friends I trust. Turns out all of them were not only quick but careful, too.
I'd probably buy a car with Range 0 or Range 1 over-revs as long as they were relatively few and far between. I'd think hard about a car I really liked with Range 2 or 3 over-revs. Range 5-6? Unless the price included a discount = a new engine, installed, I'd let someone else take the risk.
07-16-2018, 01:03 AM
#41
Rennlist Member
Does anyone here have experience with an actual non-hypothetical 911 that survived the money shift and its immediate aftermath and 20+ hours later broke due to those over revs? I've come across countless examples of cars with ranges 4/5/6 running strong, passing PPIs, living happily ever after (e.g., the shift happened 400 hours ago or something), but never once heard of somebody buying a car with old 5/6 revs and having it break due to them. You'd think on the internet where everyone complains about their broken cars you'd see that, right...?
07-16-2018, 01:40 AM
#42
Rennlist Member
Not sure on 911, but I’ve raced BMW E36’s for years and your luck can run the spectrum. I’ve punched a valve through a piston by simply just riding the limiter for a long time, but I’ve also inexplicably survived a money once too.
Porsche would not CPO a car that had severe over revs like the car in question here, right? I recently bought a CPO 991 GTS manual and assumed it would have been something they checked.
Porsche would not CPO a car that had severe over revs like the car in question here, right? I recently bought a CPO 991 GTS manual and assumed it would have been something they checked.
07-16-2018, 02:28 AM
#43
Rennlist Member
Good info to know...thanks gent. Great posts for those following.
07-16-2018, 12:49 PM
#44
Intermediate
Does anyone here have experience with an actual non-hypothetical 911 that survived the money shift and its immediate aftermath and 20+ hours later broke due to those over revs? I've come across countless examples of cars with ranges 4/5/6 running strong, passing PPIs, living happily ever after (e.g., the shift happened 400 hours ago or something), but never once heard of somebody buying a car with old 5/6 revs and having it break due to them. You'd think on the internet where everyone complains about their broken cars you'd see that, right...?
07-16-2018, 12:54 PM
#45
Rennlist Member
But then the problem comes when you try to sell the car to the next buyer. They balk and move on to the next car due to these concerns, regardless of hours elapsed. If you are keeping the car for a very long time maybe...