NGK BUR9EQs or BUR9EQPs plugs?

[CJay]

Just wondering is there a big difference in longevity between BUR9EQs and BUR9EQPs on a unmodified Jap FD?

CJ

[clive]

Personally from the few hundred plugs I have seen I would say BUR9EQ as it seems most of the time that old plugs wear / erode around the main metal part of the plug and not the tip.

Hope this helps

[CJay]

Thanks Clive, reckon that\'ll save me at least 12 quid on a set

CJ