Thats why I posted the question in the first place. $1 is the same to me as $100,000 and either way take care of them the same regardless of who says what.

 

In much of their engineering......but year-over-year in much less than many companies. Such is business and definately in business that runs the full development-to-marketing cycle. The assumption is more that.....the guys in the 'Owners manual' Dept down the hall actually get semi-accurate info (and then know how to write it in English).
Obviously it's easy to find a page anywhere with something stupid.....that said, it's still my 1st go-to source.....then engage brain and make the call.

 

Read this link:

http://www.mototuneusa.com/break_in_secrets.htm

I have yet to read or hear of anyone intelligently refute this info. "The manual says it" is not enough since we know the ROW manuals are not as restrictive as the US.

Also, I have heard that Porsche bench tests the motor prior during assy anyway, so it has already been over 4500RPM's before it gets to you.

When a racing motor is built, do you think they keep the RPM's down for 1000 miles before opening it up??

While I would agree that acclimating yourself to a fast car is a smart idea, you can rev the motor while staying at reasonable speeds.

 

so if break-in procedure in porsche manual is for "lawyer", what possible lawyer scenario can there be?

 

scenario:

Newbie driver buys Porsche. Newbie drives it like he stole it before he learns how to handle the power. He goes too fast around a turn and runs over a group of kids on the sidewalk. The parents will sue Porsche for not properly instructing him with a new car. By putting it in the manual, it increases the chances that new drivers will not drive as fast because they are breaking it in while they are learning to control the car. If the driver ignores the break in and the manual, Porsche can at least say that the driver wasnt following Porsche instructions when he crashed, so it is not their fault. I know the 2nd part is a stretch, but most Porsche drivers to take it easy at first specifically because of the break in procedure and that surely has helped to avoid some accidents.

 

Just read this.

I did this with my old e430 2001 model. I ran the **** so hard. I have 145,000 miles on it (knock on wood) and the thing runs like a beuty.... My M3 I did what the manual said since it had stickers on the dash and they were so **** about it...

I think ripping the car really does help.... who knows

 

I storngly believe that is why they have this in the manuel..

 

sorry, but I stand by my earlier post. The point about the $100 K is that if you break a $10 throw away camera, it is no big deal, but if you break a $5000 Leica, it is a lot of money.



There is more to a car than an engine, break in also applies to the transmission, brakes, suspension etc, It just makes sense to get the parts "use to each other" slowly.

Other than legal (which is debatable) why would Porsche advised the current break in period if it was not good for the car?

They know their customers want to enjoy the handling and power of the car, why would they restict this? The only reason I can think of, is that they know they will have to pay for repairs for the first 4 years and want the cars to be broken in correctly to keep their costs down.

 

the "lawyer" question refers to the disgruntled porsche buyer who sues porsche for the defective auto which breaks after he red lines the car from the showroom on.

The tires and brakes should be broken in.

 

Detroit advised break-in 30 years ago.
......long before we were blessed with more lawyers than perhaps the Lord ever intended .....Hank Brown CU president

 

That's what I think too...

 

porsche dealer here told us to drive it like you stole it. this was a brand new 997 gt3, he said the motors are all broken in at the factory. he went on to say the worst thing you can do is drive it slowly and in a high gear, especially at the same speed for long periods of time.

thrash the living **** out of the car. thats what warranties are for.

 

How long does the racing engine last before it needs replacing or has to be completely rebuilt ?

 

Depends on oil changes and how other scheduled maintenance is followed.....also if it's driven year-round (winter) that can have an affect.
Race engines are a good comparison to M96.

 

I would think that it depends on the motor's state of tune and how long they need it to last. A top fuel dragster only needs to last a little over a quarter mile, a Nascar motor probably is designed to last about 1000 miles so it makes it to the end of the race after practice and qualifying. An F1 motor needs to last at least two weekends, I believe. A GT3 cup car should last even longer.

Maybe someone on here that actually works with a race team that does replace engines can tell us what their break-in procedure is. I would love to hear it first hand from them what they do.

Since I dont have one, I cant tell you with any certainty, but if a long break-in extended the life of the motor, dont you think they would do that?