Basic timing is set by the computer itself - so no matter if you turn the distributor 5 degrees one way or the other, the computer will compensate for this change in timing. Look closely at the rotor - it's pretty wide on the end. All the computer cares about is that there be a certain degree range of contact between the end of the rotor and any one plug terminal in the cap.
I've just done an analysis of a 4.0L AMC engine by compensating an aftermarket camshaft gear to its original distributor. The distributor (non-adjustable timing) had to be mounted 25 degrees CW in order to function to this new camshaft (AT NO. 1 TDC). As for TIMING the 4.0L engine - the computer takes care of this, and NO AMOUNT OF FIDDLING WITH IT WILL ALTER ENGINE TIMING.
Just as long as that rotor is DEAD on the NUMBER 1 CYLINDER AT TDC, the computer will handle this timing ITSELF. It also controls advance and retard based on environmental and other physical conditions.
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Today's Featured Article - Identifying Tractor Smells - by Curtis Von Fange. We are continuing our series on learning to talk the language of our tractor. Since we can’t actually talk to our tractors, though some of the older sect of farmers might disagree, we use our five physical senses to observe and construe what our iron age friends are trying to tell us. We have already talked about some of the colors the unit might leave as clues to its well-being. Now we are going to use our noses to diagnose particular smells. ELECTRICAL SMELLS
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