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New Ford 8N Engine
Robert Kraft, installed a Wisconsin air-cooled 4-cyl. engine in a Ford 8N tractor and, after 2 years, says it's worked well with no problems.
"The Wisconsin engine has a blower and a flywheel on one end and a straight 1 7/16-in. dia. keyed shaft on the other. To use the motor in the tractor, a second flywheel and pressure plate, as well as a clutch disc and pilot bearing, needed to be installed on the straight shaft end. I used a spacer or adaptor about 31 in. thick to attach the motor to the tractor housing. Also, I had to build a frame to carry the front axle and tractor," says Kraft.
"In addition, I lengthened the tractor frame about 8 in. so the front axle mounting plate wasn't too close to the blower screen on the engine. The hood on the 8N is made to tip forward to expose the gas tank. I moved the gas tank to where the radiator was mounted before and put the muffler on the hood so it lowered down over the exhaust pipe.
"This was a fairly difficult conversion project and good alignment is needed to make the clutch throwout bearing and mounting holes on the spacer fit straight and square. Also, the frame should be built from heavy square 2-in. tubing to be able to stand the torque when one front wheel carries all the load of the tractor. The frame should be constructed just below the air housing on the motor, but positioned to clear the steering arms and axle push arms that bolt to the tractor transmission.

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1985 - Volume #9, Issue #4