The most critical item that requires break in is a flat tappet cam. They usually come with assembly grease, or a recommended grease to apply to the lifters and cam lobes. In addition, a diesel oil with zinc additive is helpful.
What a new cam and lifters does not like is extended cranking, running dry and no oil pressure until the galleys fill, and idling!
Prime the oil system, set the timing, check the spark and fuel, have it ready to bust off ASAP, and bring the RPM up, typically full governed speed on a tractor engine.
Of course you want to watch the oil pressure, temp, leaks, listen, make sure the rockers are oiling, etc., but try to keep the RPM up for at least 20 to 30 minutes. Then shut it down, retorque the head bolts, check the valve lash.
Once it goes to work, try not to fully load it for extended time until the rings have time to seat, avoid idling. The break in oil needs to stay in by the mfg recommendation, or about 1/2 the normal oil change period.
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Today's Featured Article - Talk of the Town: Winterizing Engines - To Drain or Not to Drain? - by Russ Berry. What is this strange attraction I have to equipment and machinery? How did I get this way? I came from the suburbs and own a small horse farm in rural Loudoun County, Virginia. You can call me a "weekend farmer." The local farmers do. Does it bother me? No. I am just happy to have their friendship. At least the word "farmer" is in my title. But what is the attraction? How can I explain the sensation and exhilaration I feel when I turn the key and hear the engine come to life (most
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