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Don1915

Spark plug gasket question 1915 4 cyl

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Does anyone know what sized / type spark plug gasket is used on the early DB 4 cylinder engines  (1915)? Thanks.

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I am unfamiliar with a  DB 4 engine but many engines of that era had spark plugs that were 7/8 pipe thread so no gasket was required. A picture of the spark plug would help.

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DB did NOT use pipe thread spark plugs. If you putting in new plugs the gasket ring came with the plugs. W-16 Champion is the modern plug to use. 

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On 10/24/2019 at 1:27 PM, nearchoclatetown said:

DB did NOT use pipe thread spark plugs. If you putting in new plugs the gasket ring came with the plugs. W-16 Champion is the modern plug to use. 

No, that's the issue. I'm putting in vintage CICO plugs. 

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