Like Pete said and i will ad to this . a 766 setting at a 100 Hp is a bit over fueled and being over fueled can cause washing of the walls and fuel not burning can turn to more carbon . Also along with fitting sleeves to block it is wise to FIT PISTONS TO SLEEVES today. One other thing about breaking in a diesel engine is HEAT , if the engine is not getting up to and above 165 degrees and better if it is running 185-195 range the fuel in not getting burnt properly . Making sure that the injectors are all working good also plays in how well your rebuild is going to play out. As for break in OIL myself i have never played into that . I run what is going to be run in that engine . And a better way for break in is TO RUN IT , Now not sayen to take it out and put her on the plow and plow 500 acres non stop but Chore work , haling manure moving bales spreading fertilizer grinding a load of feed if you can load the grinder evenly . And the big thing set it back to being real close to stock or 10% above atleast for the first fifty hours . And make sure that engine temp is at operating temp.
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Today's Featured Article - Pitfalls of Tractor Engine Rebuilds - by Chris Pratt. The first pop after you have put the machine together with your own hands is exciting and pleasing. The whole experience can be marred if one moves too fast and makes too many assumptions that they can just use "as is" some parts they should be closely scrutinizing and possibly attended to. In such cases, rework makes what could have been a fun project turn into an irritant or even a nightmare. Minor Irritants To give you an example of an minor but irritating proble
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