Does anyone know the heat range for spark plugs for the M42? A co-worker of mine told me about Brisk spark plugs and I'm thinking about trying them but I need to find out the correct heat range to use.
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Care to explain that plug to the unknowing (me)? :) -
Looks like a surface gap plug. Those are usually for racing only as they will foul quickly on the street daily use. You can go to a hotter plug to avoid fouling so much, but you risk pinging when you go up range.
Anyhow, your heat range is NGK #6 range.Adam Fogg- '88 M3
Common sense- It's the new 'gifted'Comment
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