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 - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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