Originally Posted by Fiecos Dan
I've tried quite a few different ways of running in,
and found running-in is best by
Always warm up gently, not idleing. and fueling to be 14.2-15.0:1,
whilst at different times, checking everything.
30 minutes between 2500-3000 rpm,
0-50 miles, easy upto 3000rpm, changing the loads. no more than 25% throttle, Change oil.
50-200 miles, as above but to 3500rpm
200-300miles, 50% throttle, 4000 rpm, no boost.
300-400miles, as above but with boost
400-500miles, 50% throttle, 5000 rpm.
oil change,
500-1000miles, full throttle, low boost setting (20psi on my cossie), full RPM.
1000 + Full boost (35psi on my cossie).
Job done
The above way, has given me best results on CVH's and YB's, going by compressions, leak down test's, and longtivity of the whole engine.
i've tried 1000,500 etc ect of ploding around (like most places say) and rings never bed in correctly.