When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I was just speculating, I don't have any facts to try and argue that point with, and I don't want to invest any energy looking for some. I've got a couple of decades of experience with turbocharged Mitsubishis so I am no stranger to turbo's myself. That certainly doesn't qualify me to speak authoritatively about turbocharger engineering / mechanics. I think the level / criteria of quality control engineering that goes into aftermarket turbos is likely not the same as an OEM shipping cars.
Fair enough. Thanks for the good discussion! One final data point on the turbo side of things. Borg Warner who supply turbos to OEMs and the aftermarket, state nothing about break-in in their technical training manual for the EFR turbocharger line (their most advanced aftermarket offering. Page 81 does refer to priming the turbo with oil, but that's it. https://www.borgwarner.com/docs/defa...ining_book.pdf
Fair enough. Thanks for the good discussion! One final data point on the turbo side of things. Borg Warner who supply turbos to OEMs and the aftermarket, state nothing about break-in in their technical training manual for the EFR turbocharger line (their most advanced aftermarket offering. Page 81 does refer to priming the turbo with oil, but that's it. https://www.borgwarner.com/docs/defa...ining_book.pdf
Sure, but that turbo only comes with a 1 year warranty, and they likely aren't liable for the carnage it causes if it does blow.
I know this subject has been beaten to death but I also believe that as long as people buy new Porsches that it will continue to come up. I take European delivery next week of a '24 GTS. As an engine builder I have my methods for break-in which for the most part is keeping revs low for the first 30-60 minutes then let the dogs run. This method has served our customers well for 50+ years on street and track motors and has crossed over generations of technical advances in materials. I intend to experiment in real time with my new 911 and put this to the test. Caveat: Since I have not been privy to main bearing/rod bearing clearances and ring gap on new Porsche engines, I'll be playing it by ear and NOSE but it's safe to say I'll drive at least 200 miles before redline shifts. (It's a manual.)
Stay tuned.
After my last visit to the factory and having chatted with the guys who are actually building the engines, I have elected to follow Porsche break in procedures, but I am sure they are conservative in their views.
Sure, but that turbo only comes with a 1 year warranty, and they likely aren't liable for the carnage it causes if it does blow.
Because I'm a glutton for punishment, I did some digging on this. I found maintenance and installation manuals from CAT, Garret, IHI, Holset, Borg Warner, and Schwitzer and none of them talk about a break-in period other than spending a few minutes at idle upon the first startup to check for leaks and make sure oil is flowing before putting it under load. I even looked at the service guidelines for huge ABB ship turbos, and those are essentially the same. Happy to provide links for any of these if you're interested.
Here's an excerpt from the Schwitzer turbo installation manual which is representative of virtually all the other ones.
Because I'm a glutton for punishment, I did some digging on this. I found maintenance and installation manuals from CAT, Garret, IHI, Holset, Borg Warner, and Schwitzer and none of them talk about a break-in period other than spending a few minutes at idle upon the first startup to check for leaks and make sure oil is flowing before putting it under load. I even looked at the service guidelines for huge ABB ship turbos, and those are essentially the same. Happy to provide links for any of these if you're interested.
Here's an excerpt from the Schwitzer turbo installation manual which is representative of virtually all the other ones.
LOL well if you want the pain to continue I would point out that while that is all interesting, none of it is about the specific turbo in our cars nor is it from Porsche.
Otherwise
Spoiler
I read through the Porsche workshop manual Procedure "213019 Removing and Installing Turbocharger" and there is nothing about needing to break in the turbo.
LOL well if you want the pain to continue I would point out that while that is all interesting, none of it is about the specific turbo in our cars nor is it from Porsche.
Otherwise
Spoiler
I read through the Porsche workshop manual Procedure "213019 Removing and Installing Turbocharger" and there is nothing about needing to break in the turbo.
LOL you had me going on a wild goose chase with this. You could teach a masterclass in trolling (even if it was inadvertent ). At least if this ever comes up again in conversation I will be able to answer very quickly and confidently!
That story always makes me laugh. People point to it as if it certainly happened and it was in fact Jesus himself giving the lecture.
What would Jesus know of flat 6 engines? He walked or rode beasts of burden.
I love the psychology of this argument...people will find the examples they need to support their point of view with impressive efficiency and relentlessly attempt to beat others into submission with them.
]What would Jesus know of flat 6 engines?[/i] He walked or rode beasts of burden.
I love the psychology of this argument...people will find the examples they need to support their point of view with impressive efficiency and relentlessly attempt to beat others into submission with them.
Nothing. He drives an Accord. But He does not speak of his own Accord.
Because I'm a glutton for punishment, I did some digging on this. I found maintenance and installation manuals from CAT, Garret, IHI, Holset, Borg Warner, and Schwitzer and none of them talk about a break-in period other than spending a few minutes at idle upon the first startup to check for leaks and make sure oil is flowing before putting it under load. I even looked at the service guidelines for huge ABB ship turbos, and those are essentially the same. Happy to provide links for any of these if you're interested.
Here's an excerpt from the Schwitzer turbo installation manual which is representative of virtually all the other ones.
So you are talking about break-in for the turbo unit, but when we are talking about a car the heart is the engine.
I hardly see any relevance between breaking in a new turbo unit vs breaking in a new car.
So you are talking about break-in for the turbo unit, but when we are talking about a car the heart is the engine.
I hardly see any relevance between breaking in a new turbo unit vs breaking in a new car.
What makes you think the break in is just about the engine. The specific text from the manual states
"The moving parts of a new vehicle must be run in. The parts require the first 1,875 miles (3,000 km ) for this purpose. The oil and fuel consumption may be somewhat higher than normal during this period."
So you are talking about break-in for the turbo unit, but when we are talking about a car the heart is the engine.
I hardly see any relevance between breaking in a new turbo unit vs breaking in a new car.
It was just a sidebar that I found interesting to explore when it was brought up by Mike. I agree that there isn't much relevance, thus my efforts to prove that turbos don't need breaking in (but engines do to some extent at least). I know its a lot to follow between this and the other recent thread, but I advocate for a happy medium between what Porsche recommends, and the "break it in on the racetrack" crowd. With most things in life I find that the truth rarely lies at the extremes. I believe with every fiber of my being, that this also applies to engine break-in.
08-27-2024, 05:40 PM
). At least if this ever comes up again in conversation I will be able to answer very quickly and confidently!
