 Hey Merlin, Glad you are back for a little bit, I always enjoy talking with you. I really dont want to re-power my G-1355, I am trying to find a way to rebuild the 585 and make it a stronger, more dependable engine, and I think it can be. I agree a 6B 8.3L Cummins would be a sweet engine in that tractor, and it may come to that if I have another 310 Waukesha experience, but I am going to try to rebuild the 585 first anyway. Where are you talking about the Cummins vibrating?? Are you talking about the pressure plate part of the clutch being centered on the flywheel??? I have never seen where there is much room for movement on installing that to the flywheel, and cant say I have really checked that for being in center. Most are pretty tight when they go on, but I guess that is something that could cause trouble if out of balence. The only real time I notice a Cummins powered Oliver shaking is when it is pulling down hard, like when I pull the 2150 down hard when ripping ground. For example, I have the fuel pump on the 2150 set at about 3400 RPM wide open empty with no govenor, and with the ripper in the ground it pulls it down to 2600 to 2900 normally. If it pulls down close to 2300 RPM I start to get a shudder through the engine and transmission and if it drops more than that I have to shift or pull up. I have simular "shuddering" in the other engines and drive train when the tractors are under near full loads, but have never thought much of it. This is not the first time the 1850 has sheared an engine mount bolt, but it has over 1000 hours on the same coupler chain (it will fly off tonight because I said that). Has broken the right front mount twice and the left front once. I just had the engine out this summer and did the transmission input shaft, the transmission oil pump, and entirely rebuilt the engine mounts with larger bolts, but didnt have the three speed off. If it shears another bolt I will check the clutch and flywheel and see if that has anything to do with it. Corse the fact that the 1850 is cranking 145Hp with 20.8 x 34 full lug Good Year radial tires has nothing to do with my drive train stress I am sure :-) I sure wish you would write a book on this, then I could read it and would not have so many questions :-) Have a happy holiday
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