BMW 2002 Electronic Ignition Modification Tip

I am writing in reference to Mr. John P. McKay’s letter in the March issue of the Roundel concerning which electronic ignition to buy for a BMW 2002. I would like to offer my advice.

I have a BMW 2002tii whose engine has been modified by Miller & Norburn. One nagging problem which I had at the beginning with this engine was spark plug fouling due to the cold plugs required with 10:5 compression and a 330 degree camshaft. They would last only a few hundred miles before fouling and no manner of tuning would help solve the problem.

I installed a Speedatron CD ignition along with a Bosch Blue Coil. The Blue Coil was necessary because the terminals in the stock coil could not be removed to fit the wiring of the Speedatron unit. Right now, the engine has done about 2500 miles of city-country driving without experiencing fouling problems. This unit has certainly proved its worth. Points last longer, and I no longer have plug fouling problems at high RPM despite the use of relatively cold spark plugs N NGK B8ES’.

I hope my experience with this modification will be of help to Mr. McKay and other BMWCCA members.

Author: Manuel Rodriguez Mehrhof

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24 March 2007 | Electrical