Originally Posted by Azrael
As engine/car is not only pistons and cranskshaft bearings I would give it couple hundred km's at the begining for things ike camshafts to bed in. At least on new car or compeltly new engine. OR am I wrong?
I run a cam in by giving it about 20 mins of moderate rpm useable (around 2500rpm but varies according to what cam)
I dont run bearings in AT ALL, im quite happy to fit new bearings, turn the key, warm the engine up, and thrash it round a track.
One thing worth mentioning on running is that its vital you DO NOT use a fully synthetic oil, they work too well and stop the rings bedding in!