Bill L. .........
Depends what you're looking for.
I used BPR5ES is my stock 1098.
Were it a tuned unit with higher than
stock compression, I would've used a
"6". If an "EV" (or plantinum) style were
available I'd probably have used those
types for superior flame propagation,
most assuredly so in a higher than stock
compression application.
All those letters denote different
types of electrodes, etc. Some may be
Platinum. All these dfferent electrode
"styles" affect the combustion process
in terms of the "kernal", etc.
You need to "further illuminate the terrain
upon which you find yourself"!
They'll all work, so you need to get ahold of an NGK application book
that explains
prefix/suffix letters to "know" more.
Your local autoparts establishment should
have one and should be more than happy
to let you glance upon same so that you
may make a more "educated" choice.
Cap'n. Bob
'60 :{)
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