There are three heads available for the Dpa 3 cyl. One has six drilled and tapped ports. Three are plugged. Second is the Roto Diesel version used on small John Deere German built tractors. These heads are hard to come by and priced like wise. The ports are turned 30 degrees from the Ford version. The last is of coarse the Ford style. I learned this the hard way by buying a ford 3 cyl. pump core and putting the head in a John Deere Roto Diesel pump. I built it, tested it, and shipped it off. Then I got a call from the owner saying he couldnt get the lines to fit. So I then had to find the correct head and build him another pump. So now I am smarter, and have Two Ford 3 Cyl. pumps here rebuilt and ready to go if some one needs one,,,, or Two!! Check n see. You may have the JD style head in your housing . They both are clock wise and work the same except port location. Good luck,, Al
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Today's Featured Article - Product Review: Lead Substitutes - by Mike Schordine. Lead was oriinally added to gasoline as an upper cylinder lubricant. It lubes the valves and seats. If you rebuild the motor, you could use hardened seats and valves, and unleaded fuel. But if your old tractor runs good, a simple lead substitute added to the gas is a perfectly reasonable solution. And, if you are like me, your tractor is under cover, but it sits outside. So with every temperature change, the humidity in the air collects in the fuel tank, in the form of water.
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