wbgordon

My car, by the way, is a base 997. Thanks.

CO997

My oil temp usually tops out around 215ish, it seems to take a whlile to get there but it never goes any higher. I suppose that is within the proper range....

jcm

I was told to follow the manual. After about 2000 miles to 2500 miles, I was told by a service manager to run the car in third from 2000 rpm to redline, let it slow down to 200 rpm, no brakes, and run it up to redline. Doing this repeatedly will seat the rings.

wbgordon

I took my 997, at 1,050 miles, up to 125 mph in 6th gear with the engine already warm, not exceeding 5000 rpm the entire way. Was this ill-advised?

soltino

Did you mean 2000 rpm?

tino

wbgordon

No, I meant 5000. Redline is 7000. At 125 mph in 6th gear, you are pushing about 4500 rpm.

CO997

You should be fine. So long as the engine and oil were up to temp

soltino

[Quote] let it slow down to 200 rpm, no brakes, and run it up to redline. Doing this repeatedly will seat the rings. [end Quote]


Did you mean 2000 RPM?


tino

pcarfan944

Just the other night I was reading a tech artile in Excellence magazine about the factory breaking in engines before they put them in the cars. Now, I can't remember if this was something they did way back when or something they are still doing now and since i'm about to run out the door for work I don't have time to check, but here goes. The article stated that the engines were run for an hour at different speeds with different loads. They would start the engine out at 1500 rpm with a small load, run it for 10 minutes. After that, 2500 rpm for another ten minutes with an increased load, again up to 3500 rpm for another ten minutes while increasing the load, all the way up to 6500 rpm. Maybe someone can shed more light on this, and when I get home tonight i'll be happy to dig the article back out if anyone is interested.

Also, I have a Road and Track from 1986 that has a big 4 or 5 page advertisement for Porsche. In there, it stated they bench tested engines at maximum RPM for 45 minutes! Don't know if that was every engine, or just a random pick for quality checks, but that’s endurance!

wbgordon

I spoke to a service writer at Brumos Porsche in Jacksonville, FL today and the man said there is no break-in period. Just drive the car, he said . Interesting. Reading all these entries, there's obviously no clear consensus on whether or not break-in is important or, if it is, how long a break-in is advised.

Skunk Workz

Only thing you'll break in when following the factorys break-in period is yourself as a driver...nothing else. The engine is rev'ed at the factory,under load,(when hot,of course...doing it with the engine cold is a no-no no matter) to start seating the piston rings. This is by no means achieved when you buy the car. What you should do,to get the rings seated,is to let it get hot,and drive it under high load conditions for the first 20+ miles...then you'll seat the rings before the "diamond hone" in the cylinder is worn smooth...when that hone is smooth,no matter what kind of inspired driving you do will wear in the rings...unless you dismantle the engine,buy new rings and re-hone the cylinders,of course.

Alan Smithee

If you're assuming the people that designed, tested, built, and warranty the car aren't correct, then yes.

Alan Smithee

That's entirely incorrect and poor advice for anybody buying a new car of any type. At the very least, brakes and tires need to be broken in for a few hundred miles for the safety of you and others on the road; the mould release compound needs to be worn off the tread, and the pads need to be bedded into the rotors. As for longetivity of the vehicle, there are hundreds of other parts to consider, including transmission and the rest of the drivetrain.

For those that have no problem beating on your car as you leave the showroom, that's great...enjoy your car as you see fit. But don't recommend it or condone it to others.

Skunk Workz

The mould compound is worn off after 2 miles...or even less. Yes...which need s gentle braking...two or three times. What parts of the drivetrain actually rubs on another part?

Alan Smithee

Your statements aren't true, but whatever. I've got no interest in arguing with you...do what you want.