Combines Turning up the Pump on a 750

[turbo]

You may find that when you are in heavy corn like that it is bennificial to have a modified concave. If you block off the underside of the first four or five bars and then remove every other wire from rear it will take much less power, increase your capacity and produce less cracked kernals. I have one such concave in my 1977 750 and had same unit in 1973 750 with a gas engine. I could run 5 mph in 150 bu corn and unload on go at same time. 1977 750 with 6.354.1 turbo will run 5 mph in 180 bu corn and unload on go at same time. If you would look at your concave in wet corn you will notice that most of the rear is plugged with cobs and leaves. Anybody else have any modifications that will boost capacityIJ I'm always trying to help mine. Thanks for your help.

 

[Silver750]

Thanks for the reply. I will check my concave today. How does one go about blocking off the underside of the concaveIJ Is there a kit to do this withIJ. Did you set up the pump on the 750 dieselIJ

 

[turbo]

I did not mess with the pump. It seems to have enough power. To block off the front bars on concave just take some pieces of light metal, my combine has the sidehill dividers on it so it took sveral pieces to do this. Take some 1_4 inch j bolts and hook the bolt on the concave rods and just bolt it to underside of concave. Massey has some filler strips, but I think you will not have enough bar left to do a good job of threshing. Do you do any small grain. I ran some oats this summer. I usually have trouble getting a good job of threshing in small grain and now I discovered why. I usually run cyl about 1000 rpm, but this year I forgot to change my speed and was at about 750. It worked better at a much slower rpm than at a higher rpm. I think my problem has been that with too much speed I wasn't keeping the cyl full enough to do a good job.

 

[Silver750]

Thanks for the information. I am going to have my pump set up 10%. The pump mechanic I spoke with said that 10% should have the machine up to around 155HP.

 

[whizz]

which engine do you have as you talk about fitting an intercooler it sounds as if you have the 6372 engine I would be wary of uprating this engine it is not as strong as the 6354.4 which has turbo and intercooler on it normally. As for concave filler bars I would not fit those until you have checked your drum bars. We fitted new beater bars last year and it is amazing the extra capacity you gain overnight

 

[Silver750]

Thanks for all of your info on the Massies Skiwhizz. My 750 is a 1979 with a dot4 354. I don't think it has an intercooler on it. The manifold attached to the turbo looks like a standard manifold. It sure dosn't look like the John Deere intercooler. But the manifold and turbo are different from a neighbors early model 750(Red cab) with a 354 in it that I have robbed some parts off of. I have noticed that most 850's I have been around have a decal on the side stating that the machine is charge cooled. I will check my beater bars tomorrow to see if they need replacing. Again thanks!