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Spark Plug Info for B21A, Engine, Zenith-Stromberg 175CD Carb, and BW55 AT 200 200

posted by  RLC on  Sat Dec 4 23:15 CST 2004
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Hello B21A folks:

Had an interesting discussion with Bosch.

As you know, our B21A Engines require Premium Fuel 97RON. Bosch folks told me the W7DC Spark Plugs were valid for our engines 20+ years ago, when the fuel was better, but he recommended W8DC, a hotter Spark Plug.

I tried W6DC, and the engine ran like crap and they carboned up.

The W8DC, I just installed, but the car seemed to run better.

Any thoughts.

PS: The Coolant Temperature remain just below the Middle of the Range, as before.






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New Spark Plug Info for B21A, Engine, Zenith-Stromberg 175CD Carb, and BW55 AT 200 [200]
posted by  RLC  on Sat Dec 4 23:15 CST 2004 >


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