Quote:
Originally Posted by priobe
Am I missing something?
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Yes.
The firing point doesn't move with the change in advance. The reluctor and rotor arm are fixed relative to each other, so once it is set, it is set for the full range of ignition advance.
If the tolerance within the pickup mounting holes gives you sufficient adjustment, then go with that. If it doesn't, you will more than likely need the adjustable rotor. This is a nicely designed and adjustable unit and should arguably be included as standard with the Pro-Billet dizzy.
The misalignment that necessitates the adjustment is between the rotor mounting and the reluctor and has nothing to do with the cap mounting. Therefore, once the phasing is set, you should be able to swap caps at your leisure without need for further adjustment.
Paul