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Discussion Starter · #1 ·
I am currently running BPR6EY plugs in a stock L28E and the firing nose is black colored with no deposites etc. I don't have a NGK reference book handy. Anybody got the numbers for a hotter plug (NGK) handy???
 

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Discussion Starter · #3 ·
<b>RE: NGK plugs</b>

The 6 determines the hot or cold of the plug. The higher the number the colder the plug. So a plug with a rating of 6 or lower will be a hotter plug.
 
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