Austin Seven Spark Plug Guide - by David Armstrong
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Austin Seven Spark Plug Guide Thanks to David Armstrong |
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Head Type
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Original Spark Plug Type Fitted |
Current Substitutes Used |
| Standard Austin Head 1923 – 36 | KLG M50, Champion No7(18mm) | NGK A6, Champion B16 |
| Standard Austin Head 1937 – 39 | KLG F50, Champion L10, NGK B7(14mm) | Champion N86Y |
| Ulster | KLG J1 | |
| Supercharged Ulster | KLG 244 | |
| Nippy | KLG K1 | |
| Finned Cambridge | Champion L92Y | |
| Supaloy | KLG F70 | |
| Speedex | Champion N8, NGK B7ES | |
| Dante | Wipac P40L | |
| Reliant | Champion L10 | Champion N86Y |
This guide has been prepared by David Armstrong and lists the various spark plugs originally fitted to a number of common Austin Seven heads. David points out that some of the plug numbers are old obsolete ones which could be cross referenced to modern ones. Some discussion on using current spark plug types has taken place in the discussion forum on this site over the years - just use the 'Search' feature on the site and look for spark plugs....... I believe the NGK A6 is very commonly used as a modern replacement.