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Old 10-29-2010, 09:35 PM   #1 (permalink)
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Default Repower engine M2

I'll try to keep a long story short. I run a 81? M2 #22500 Corn Plus. It originally came with a 649T engine. A few years ago the engine blew and I replaced it with a $2,500 D2900 from Worthington, hours unknown. Motor has plenty of power yet, but it sure is smokey, uses 1/2 gal.+ every 10-20 hours. The seperator, threasher, frame ect., is in tip top condition, feeder beater, concave, cylinder bars, raddles, clean and tailings conveyor chains are new, less than 75 hrs on them. I'd like advise on what to do about the motor. Should I pull it and overhaul it, or should I look into a different power unit, and if so what are my options? I've got most of the bugs and wrinkles pretty well sorted out on this machine, and I figure on keeping it for a while. TIA
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Old 11-02-2010, 09:59 PM   #2 (permalink)
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My Dad bought an M2 a couple years ago because he wanted to help out at harvest. He has done about the same as you when it comes to replacing parts but not the engine. Has too much invested for what the machine could sell for now. My approach, I hate to say, is similar to his, if the rest of the machine is good then fix the engine. Is it smoking black or blue? An overhaul should not cost you too much as long as you have good oil pressure then just some machining and sleeves and pistons and bearings and gaskets are readily available. I have done a couple engines the last few years and always have grumbled at what the machine shop charged me but I have not had trouble with them (knock on wood) and they have the best reputation around here.
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Old 11-03-2010, 12:10 AM   #3 (permalink)
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12-15 years ago rebuild kits were cheaper from Agco than from jobbers so I'd check there first. As for smoke, the 200 tractor dad bought new in 73 always smoked a lot and still did after the rebuild, but it never used oil and was good on fuel, just smoked and had lots of power. Had to replace sleeves because of electrolysis just in case you were wondering.
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