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#1
03-28-2001, 10:15 AM
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Team -
Back from Vegas, and managed a few minutes in the garage last night. Taped the coil HT lead to the valve cover to get a smaller gap and cranked - saw an anemic orange spark, so at least the unit is working. Rechecked the voltage to the coil: 6V cranking and 4.7V with ignition on. Plan to check wiring for corrosion/resistance and possibly come off of pre-resistor to try to get some more juice to the coil. Chuck
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Chuck Taylor Falls Church VA '66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe 
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#2
03-28-2001, 10:21 PM
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I don't know the Cranes, but the 1st version of the stock transistorized ignition wants 2.5 - 3.5v. The non-transistorized system expects about 9v there.
-CTH
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#3
03-29-2001, 11:16 AM
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I think that this car had one of the early CD units, judging from the two ballast resistors. There is also a large metallic object under the battery.
I think that Mercedes installed the CD unit to get a hotter spark without frying the points. Supposedly, I can jack up the voltage because the Crane unit is "point-less" - using the photo-voltaic approach. Chuck
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