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Dave at Pelican Parts Dave at Pelican Parts is offline
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Join Date: Dec 1969
Location: Silly-Con Valley
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What Mark said.

When you twist the distributor body, you change where the pickup is relative to the shutter wheel. The shutter wheel is "fixed" relative to the camshaft position (due to the gearing of the distributor driveshaft and such). So when you twist the distributor body you change when the shutter tells the Crane to fire the spark relative to the rotation of the engine. Just like points.

The Crane instructions tell you to set the motor to TDC #1, and install the pickup so that one of the slots on the shutter is over the pickup. That gets you "close". Then you button everything up, start the engine (that's one thing "close" is good for), and run it up to 6000 RPM to check the timing with your timing light. That's what gets it "right".

Make sure to thank every power you know of that you have a Bosch distributor on that motor and not a Marelli one. A lot/most/all of the original Sixes came with distributors made by Magnetti Marelli. Almost impossible to find parts for nowadays, and nobody makes a points replacement that fits them that I have ever heard of. (Except for one or two one-offs.)

--DD
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Old 12-31-2002, 08:15 PM
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