XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

Spark Plug Gaps

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Old 05-15-2014, 07:32 PM
macudc's Avatar
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Default Spark Plug Gaps

Sorry if I'm about to set off a controversial debate but what is the correct spark plug gap for a 1995 6L v12?

I have searched the forum and I see both 0.025" and .035" recomended. Similarly parts suppliers seem to list both 0.025" and 0.035' as the correct gap for facelift v12s

Kirby Palm says 0.025" as does my manual.

On a related note are the NGK BR7EF plugs recommended in the Vehicle Care manual interchangeable with the NGK BR6EF I find on the parts sites?

Again thanks for all the excellent advice
 
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Old 05-15-2014, 07:40 PM
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Default

Yes on the .025" gap

BR7EF mentioned in the manual are one heat range colder than the BR6EF. Unless you have a specific reason for wanting a hotter plug I see no reason to change to the BR6EF although they should physically fit OK.

Cheers
DD
 
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