Combines N6 N7 differances

[John]

To start, the engine size, N6=426cid_220hp N7=516cid_270hp Grain tank size, N6=225 or 245 bu depending on year and model N7=315 bu, Hydro, some of the N6's had a smaller on like the N5 and others had the same one as the N7, basically the N7 was an oversized_overpowered(more power)N6. The later models of the N7 were built heavier to handle the power and size, one of the drawebacks of the early N7. The N6 as of series 3,1982 year, also got enough changes to make them much better and they both had few changes right the end of the R6_7. The Deutz didn't make many changes except the Deutz engine to the R60_70. Agco has made the most changes since the 1982 N6_7 came out.

 

[mike]

Thanks John, sounds like you have lots of experience with these. Could you explain what the term "hyperize" meansIJ Where are you locatedIJ

 

[John]

Hyperize is making modifications to the Rotor that maximize it's preformance to beyond the OEM specs. You can find the answers in the TIPS section of this page and the N's have the P1 rotor. Do as explained there and your ground speed and capacity are both increased and the power consumption is lowered. I run an N6 with the mods and in 200bu corn, 6-30 CH, I run about 7 mph. That gets fun on contours!

 

[PETE]

John, what kind of boost pressure are you running at those ratesIJ I can go 5.5 mph in 200 bpa with the boost at 18-20. I was told not to run much higher boost for any length of time as it is hard on the engine. Pete Hinrichsen

 

[John]

Averages between 15 and 20 Boost. Which engine do you have, 670HI or 670I, mine is the 670I with the Ambac system so the boost is kept lower I am told. The 670HI had a problem with high rpm and boost pressure blow apart(early N6,7080,7580). One of the advantages of the Series 3 N's and R's. lower rpm creates less boost availability. Didn't ever hear or see an N5 blow an engine around here and the Series 3 N6 got a good reputation too due to the fact the engine was slowed down(2400rpm like the N5). They also didn't look like a coal locomotive on an uphill grade going thru the field.

 

[PETE]

John, I have the 670HI engine in my 81' N6. last fall after harvest I pulled the pump and sent it to Midwest Diesel in Ft. Dodge and had the pump recalibrated to 220hp @ 2400 rpms. I also put a 12.5" pulley from an R50 on the PTO to compensate for the slower rpms. I will be trying out this new configuration in about three weeks. Pete Hinrichsen