Why the break in? Your experience?
#76
Rennlist Member
Whether you agree or disagree with break in, Chris explains that Porsche runs these demo cars through a break-in themselves for the first 1000 miles. He was handed this demo car before anyone else with 10 miles on it and got to spend the day putting those break in miles on the car before taking it to the track. Seems like all the other journalists had their shot with the car after Chris did.
Last edited by Jeff Jones; 04-21-2021 at 03:14 AM.
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#77
Burning Brakes
Don't like that guy and not watching it but that's a bunch of baloney. Just watch the dozens additional reviews dropped using the exact same car revving it to redline.
Break in is a myth. Dealers know nothing about it when asked. If it was important at all Porsche would force a break in and limit the revs up to a certain mileage.
Not bury vague instructions somewhere in the manual. Goodness, just drive the darn car...
Break in is a myth. Dealers know nothing about it when asked. If it was important at all Porsche would force a break in and limit the revs up to a certain mileage.
Not bury vague instructions somewhere in the manual. Goodness, just drive the darn car...
Whether you agree or disagree with break in, Chris explains that Porsche runs these demo cars through a break-in themselves for the first 1000 miles. He was handed this demo car before anyone else with 10 miles on it and got to spend the day putting those break in miles on the car before taking it to the track. Seems like all the other journalists had their shot with the car after Chris did.
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#78
1000 miles in 24 hours has been done many, many times by motorcyclists, it can definitely be done on a motorcycle and I think it would be an easier task with 4 wheels on the ground instead of 2. Google Iron Butt for more info, but for those more into the endurance type things there is also CC48; which is coast to coast in the United States in 48 hours or less. This is 2 consecutive days of > 1000 miles regardless of the route one chooses.
#79
Burning Brakes
Yeah but I would hope he didn't just lope along on the expressways for 1000 miles.
Keep in mind he also claims to have slept for a couple hours.
I've done 800 mile days... but that was 100% interstate.
Keep in mind he also claims to have slept for a couple hours.
I've done 800 mile days... but that was 100% interstate.
#81
RL Community Team
Rennlist Member
Rennlist Member
Whether you agree or disagree with break in, Chris explains that Porsche runs these demo cars through a break-in themselves for the first 1000 miles. He was handed this demo car before anyone else with 10 miles on it and got to spend the day putting those break in miles on the car before taking it to the track. Seems like all the other journalists had their shot with the car after Chris did.
Left to his own devices, no doubt he would have just let her rip from the moment he picked up the car.
#82
Rennlist Member
Of course...it isn’t his car I’m not a hardcore break-in rule follower. I like the GT recommendation which ramps up the RPMs gradually over the fist 1000 miles. I’ll get through that in the first weekend after getting the car or the first two days if I’m still able to take the road trip I had planned back from the dealer. I tend the drive any new car, whether actually new or just new to me, slowly for a while. I like to take my time getting to know a car before I act a fool.
#83
Rennlist Member
Hmm, that’s driving from Canterbury to Glasgow and back
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#84
Rennlist Member
I did the Andreas Preuninger process on my 21 GT4 until about 550 miles, and then took it to the track, where I basically let it rip (gotta win DE, after all). This has been my approach with my last 3 GT cars and none of them have smoked or consumed the least bit of oil.
I took my RS to the Nordschleife with about 700 km, and that thing ran like a scalded cat.
Edit: I've also rebuilt 2 Mezger engines, where the second builder (very highly regarded in motorsport as a builder) told me "just run it - vary the revs and dont lug in one gear", and its good to go almost immediately fresh (100-200 miles).
I took my RS to the Nordschleife with about 700 km, and that thing ran like a scalded cat.
Edit: I've also rebuilt 2 Mezger engines, where the second builder (very highly regarded in motorsport as a builder) told me "just run it - vary the revs and dont lug in one gear", and its good to go almost immediately fresh (100-200 miles).
Last edited by superfast02911; 04-22-2021 at 11:49 AM.
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#85
Three Wheelin'
Even Chris can't hold back and revs it pre break-in at 6:36. In Europe break-in is 1,000 miles but here in litigation land it's 2,000. Interesting.
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#86
i'm still waiting for my GT4 to arrive, but after all i've read i think im gonna go with Andreas's method to 1000 miles
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#89
Rennlist Member
Here's what I tried to do (though I hit 6,000 RPM once or twice before 500 miles by mistake), and this method allows you to hit 8,000 RPMs when you get to 1,000 miles:
Up to 500 Miles > 5,000 RPM
600 Miles > 5,500 RPM
700 Miles > 6,000 RPM
800 Miles > 6,500 RPM
900 Miles > 7,000 RPM
1,000 Miles > 7,5000 RPM
After 1,000 Miles, Redline
Up to 500 Miles > 5,000 RPM
600 Miles > 5,500 RPM
700 Miles > 6,000 RPM
800 Miles > 6,500 RPM
900 Miles > 7,000 RPM
1,000 Miles > 7,5000 RPM
After 1,000 Miles, Redline
Last edited by sin911; 04-28-2021 at 02:52 AM.
#90
Racer
Break-in period: Hmmm. Such a loaded topic: It is perhaps best to folllow the OEM guidelines, which honestly are a compromise within themselves. It seems many people are assuming they only relate to the engine. That would be an over-simplification.
In a 'previous life' during which I worked as a mechanical engineer in the SAE world we routinely discussed/argued over how best to break in newly released operating systems. Honestly there's a concern about discovering 'early life' failures before they can effect other things -- which might have safety or cost ramifications. It's not all about rings and bearings. Even the tire guys wished for a couple hundred miles of 'settling' before they wanted their warranties to apply. The closely-related braking guys wanted thermal cycling of their systems before 'track work' or DE event use.
Pretty much every Tier 1 supplier wanted their product to be cycled up over time to peak operational performance/requirements. Simple things like alternators, water and oil pumps, power steering,etc. Everybody wanted their products to go through a low stress initial use. One common theme was giving adequate time for mating surfaces of metallic interfaces a chance to 'accommodate' each other. Another was to verify that thermal cycling did not compromise controls.
One could write a term paper or two on the subject, but my take-away from listening to these guys was that break-in is a special time during which one incrementally verifies that systems are 'ok' while also creating conditions suited to improving longevity. The elephant in the room would always be the 'cold start' topic, which is equally or more important.
In a 'previous life' during which I worked as a mechanical engineer in the SAE world we routinely discussed/argued over how best to break in newly released operating systems. Honestly there's a concern about discovering 'early life' failures before they can effect other things -- which might have safety or cost ramifications. It's not all about rings and bearings. Even the tire guys wished for a couple hundred miles of 'settling' before they wanted their warranties to apply. The closely-related braking guys wanted thermal cycling of their systems before 'track work' or DE event use.
Pretty much every Tier 1 supplier wanted their product to be cycled up over time to peak operational performance/requirements. Simple things like alternators, water and oil pumps, power steering,etc. Everybody wanted their products to go through a low stress initial use. One common theme was giving adequate time for mating surfaces of metallic interfaces a chance to 'accommodate' each other. Another was to verify that thermal cycling did not compromise controls.
One could write a term paper or two on the subject, but my take-away from listening to these guys was that break-in is a special time during which one incrementally verifies that systems are 'ok' while also creating conditions suited to improving longevity. The elephant in the room would always be the 'cold start' topic, which is equally or more important.
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