Rings need careful bedding in, IMHO.
Crank without plugs until you have oil pressure and then get it out on the road as soon as it's safe to do so without too much idling.
During the first 20 or 30 miles, give the engine short bursts of full throttle, not to stellar RPM but well into the torque, so 3500-4000 RPM, for a few seconds at a time. In-between these bursts, come off the pedal and let the engine overrun. You might need to hold the autobox in a lower gear to achieve this if not manual.
Short bursts of full throttle force the piston rings against the bore and allow the two newly machined surfaces to form a seal. There will be more friction than usual, hence the recommendation to only stay on the power for short periods (say up to 10 seconds) to avoid overheating.
When you lift off in-between the overrun scenario causes oil to be drawn up to lubricate and cool the rings and bores.
Once this is complete I would say continue this general theme. Give the engine varied load conditions, avoid prolonged labouring and high RPM at first but don't treat it too much with kit gloves. Give it some full throttle running in shortish bursts. Gradually extend the rev limit over the first 500-1000 miles then change the oil and filter and treat as normal thereafter.
Kevin
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Topic: running in X30XE (Read 1197 times)