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MG MGA - Change from positive earth?

In the first part of the ignition section of the mga twin cam factory Workshop Manual it states that the system is positive earth to give longer spark plug life.
With many people changing to negative earth has this been noticed?
Or, does changing the coil terminals to the opposite connection cancel out the problem?

M F Anderson

No Mick you wont notice any difference. Dont forget to flash the field windings after changing polarity.

When switching from pos earth to neg earth, also switch the two primary wires on the ignition coil. With this the spark will jump same direction across the plug gaps, and there will be no difference in spark plug performance.
Barney Gaylord

This thread was discussed on 18/10/2011

MG MGA index

This thread is from the archive. The Live MG MGA BBS is active now.