[Brotok]

What is the proper procedure to break-in a rebuilt engine with a valve job?

I just rebuilt my '79 911 SC's motor, I ground the seats and valves as part of the job, replaced all bearings, rings etc. I'd like to know what the experts here recommend for the break-in procedure and I'd appreciate comments on the following:

1. When should I change the oil?
2. When should I re-adjust the valve clearance? After a valve job, Porsche recommends adjusting the valves to 0.25mm, running the motor for 30 minutes and then re-adjusting the valves. I set the clearance to 0.25 mm but feel that 30 minutes is not enough time and plan to log about 1000 miles on the engine before re-setting the clearance to 0.1 mm.
3. How should the car be driven during break in?
4. When can I feel free to let her out?

By the way, the engine runs fantastic - a lot more power, response, better sound, etc. This board has been tremendously helpful in the process, I am truly grateful for all your help.

Thank you.