Rebuilt Engine Question: Break In.

[Jaak]

I am getting my 2002 Boxster S 3.2 motor back from the rebuilders this week and friends shop said they may have it installed and running by the weekend or early next week. Paying customers get priority over friends who get discounts

The following instructions came from them:

"Use the supplied 30 wt non-detergent for the first 500 km. Do not rev the motor past 5500 rpm. If the motor still has signs of blow-by at 500 km, use 30 wt non-detergent oil for anotherr 500 kms. If the motor has no blow-by use a 5w30 or 5w40 conventional oil until 3500 kms. At this point the motor should be fully broken-in and then use the factory spec. oil."

Question I have is when is it safe to rev above 5500 rpm (mine is a tip)?

I presume this is a standard proceedure for the porsche rebuilds in a colder climate? I understand the need for break in oil as well as using conventional oils to allow the parts to seat properly. I would be interested in hearing from others on the process; worried about the rev part.

Thanks,