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Join Date: May 2010
Location: atlanta
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Originally Posted by Speedy Squirrel View Post
All of the '80's Motronic distributors have, shockingly enough, a mechanical advance mechanism. The actual timing is provided to the ECU via the sensors and tooth arrangement on the flywheel. These are used to both measure the actual timing, and set the actual timing. The mechanical advance does it's thing, and the Motronic does it's thing to come up with the desired ignition timing.

In the event that the electronics go tilt, the engine is assured of getting the mechanical advance to keep from melting the catalyst.

You are 100% wrong about the advance weights purpose and their capabilities.

Tippy is correct, the sole purpose of the weights is to better align the rotor to the terminal when the motronic fires the plug.

With exactly zero low tension wires going to the distributor with zero electronics inside, how do you think it affects the spark timing seen by the engine in any way?
Old 07-07-2014, 08:18 AM
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