1. A straight line is measured in distance...except when it represents 180 degrees, or a multiple thereof.
2. NORMALLY the piston travels in a straight line...EXCEPT when allowing for thrust forces acting perpendicular to the direction of piston travel.
3. NORMALLY crankshaft rotation is measured in degrees. Distance measurements of crankshaft rotation would vary wildly, depending on distance from the rotational axis from which the measurement is taken.
4. Since all terminals in a distributor cap are [theoretically] equidistant from one another, if cylinder #1 fires at 10 degrees BTDC, each other cylinder should also be firing at 10 degrees BTDC.
5. TDC of the piston is at the same crankshaft position it always was, regardless of cam timing.
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Today's Featured Article - Ford N-Series Transmission/Hydraulic Fluid - The Full Story - by Llamas. The transmission fluid in an “N”:-series tractor lubricates the transmission, differential, rear wheel bearings, PTO and hydraulic pump drive, and it also cats as the working fluid for the hydraulic lift. In 9N/2N models, it also lubricates the steering sector and shaft system. The owner’s manual for the 9N and 2N models specified the use of only two fluids. They were STRAIGHT MINERAL OIL SAE 90 (above freezing) and
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