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Hi Al, Sorry I dont have access to any specs or data on those Delco Generators or Voltage Regulators, but Im pretty sure Clooney does so he will be better able to answer your question. In general till he gets here, however, if you turn a Generator faster and/or increase its Field current (part of Voltage Regulator"s job, raises magnetic field strength) she puts out more, so things like pulley diameter changes and pumping more current through the Field windings increases its output, provided you dont overcurrent and/or overheat the windings. Therefore, with a smaller Generator pulley and the VR set up, she just might work, depending on the Generators specs??? Regardless of what any Gen or VR spec book says, however, as it depends on the battery, Generator condition and other variables, with a smaller pulley you may just have to try her at an increased RPM having the Fideld dead grounded n hooked to the battery with an attached voltmeter n ammeter n see if she raises the voltage????? ????? If so let us know. Also, how are you gonna power up the MSD Ignition?? use a 12 volt solid state regulator for it or a battery cell tap, wonder what its upper voltage limit is, but I doubt a lil over will harm it. You better ask MSD and Pertronix !! On that cranking, do you have any idea what current the starter is pulling??? If you place a voltmeter on the battery when cranking, just how far down does the voltage drop??? Heres some things which may help. 1) Use oversize battery n starter n ground cables, 00 and even larger or custom fabricated welding cables with the semi truck type high current terminations. 2) Try n run an extra ground cable from the battery right to the starter frame in addition to any existing frame ground. 3) Use the absolute highest CCA or Amp/Hr battery or batteries you can physically fit into the mount or elsewhere on the tractor. 4) Run 10 Gauge wire to the MSD box and coil and any ignition system grounds to reduce voltage drop, even though thats overkill and may only help nominally. 5) Other possibilities may involve the use of a series/paralell switch and two 12 volt batteries to run the starter at 24 volts, that ought to spin her overrrrr rrrrr rrrr. 6) That MSD Control Box triggers n fires your Pertronix Coil multiple discharges for each firing right??? I have no idea or specs as to what its control voltage threshold is, but doubt if a bit under voltage would render it inoperative. However, at lower input voltage to that coil (drug down by starter) perhaps its not drawing enough current to give you as high of energy spark you need at higher compressions. Where is the plug gap and have you tried reducing it????? Such will not require as high a coil voltage to arc jump the gap !!! Try it lee n see what happens????? Sooooo ooooo if the 16 volt system dont pan out and even before you go that route, I would try: Big Super Heavy rated battery or batteries,,,,, ,,,,,00 Gauge cables,,,,, ,an extra ground cable direct to the starter,,,,, ,,,10 gaUGE WIRES TO ALL IGNITION COMPONENTS N GROUNDS,,,,, ,,,,try the plug gap a tad narrower,,,,, ,,,, or check out a dual 12/24 volt system. Great question, sorry I have no Delco specs, and it will be fun to hear clooney and others thoughts on your problem, hopefully we can all put our collective heads together n get you going. Good Luck God Bless n Pease pray for n support our troops. John T
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