Re: Spark Plug Question, AGAIN

[Ian Crocker <ian@btcase.bt.co.uk>]

>       Excuse my ignorance but what does "harder" refer to in a spark
> plug?  I have never heard that one before.

Faster heat dissipation, colder running.

To answer other people's questions:

If the reach is correct then maybe they will fit the older US heads.

I doubt you'd get any benefit on a standard engine and they may even foul
up.  I think the stanbard NGK plug is a BCP6ES  i.e. one grade softer and
with a projected nose.  

Regards,

Ian

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