The first question is: does the new engine make more power than the old one did when it operated correctly? If yes, that may be the answer in a nutshell. It takes burnt fuel to make heat. It takes good injection timing, and expansion control, to turn it into work. Residual heat in the stack is waste. Exhaust valve timing, and back pressure can both affact the amount of heat in the stack. If the tractor is making more power than before, and no other changes have been made I would do the cooling system analysis first. Particularly the heat gun analysis of the radiator. Thermal analysis can also show restrictions in hoses, but not as easily. Thermostats that fail to open fully, and internally collapsed hoses are also possible. If these are sound and checked off, I would just swap the exhaust. It is not a 5 minute change, but running close to the edge is not in the best interests of a long engine life. Jim
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Today's Featured Article - Women and Tractors - Tractor Engine Repair - by Teri Burkholder. One of the great things about working on a tractor engine with your other half is that you know what he is thinking of at all times and can anticipate his every move and his next thought of what he will do. With Ben, anyway, I can tell! He'll be busy working and I’m handing him tools and he says, "give me that..." and I’ve already got it in his hand or "hand me that....."and I’ve got the portable light right where he needed it placed to see. "Run in the house and get me a...."as I open th
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