Combines 1985 N6 IJ

Wally, Most if not all the engine problems were fixed by the Series 3(1982). They have the 670I with the Ambac fuel system vs the 670HI with the Roosamaster system. The Ambac 670I was slowed down to the R series and the old 7080,7580,N6 (670HI engine)high RPM blow apart disappeared. I own an 82 N6 Series 3 and had the underhaul(rod bolts and bearings)put in at 3100hrs and it runs GREAT and the old bolts and bearings didn't show any trouble (but cheap insurance). I went from an M2 to the N6 and you will be very suprised in the capacity, and if you Hyperize it, you will increase the capacity more. If you are really worried about the engine, Cummins makes a nice retro-fit. I would be more concerned with other wear items with as much crop has gone through that machine, bars,cage,rolls,conveyors,augers. Rotaries work considerably faster thus more acres per hour thru the machine. But it is still an Excellent machine. Good luck!

Wally if you can use another l3 Ihave an 85 model for sale. With an 830 corn head and 24 ft st head I have been asking 18,500 for all of it`. Thanks Marvin Kraft Ph 830 609 3143

It is the rod bolts that are the problem on the high rpm N6 (2850 rpm) Don't let your dealer talk you into an overhaul unless you need it. My N6 vented the crankcase because of the luberfiner filter gasket blew out. make sure you clean the oil restrictor in the filter, or better yet make hoses and reverse the flow of oil. **(50psi oil pressure X 8 inch diameter filter housing = 2500 lbs force trying to pop lid off of filter housing)**