Re: Spark Plug query
- From: "Rob Kleinschmidt" <Rkleinsch1216128@xxxxxxx>
- Date: 2 Mar 2006 12:12:01 -0800
Chris N Deuchar wrote:
The GS takes 4x B8ES plugs. When I bought a set recently they were
labelled BR8ES and when I queried this I was told they that the R
stood for 'resistor' and that I should just unscrew it from the end.
The 'It' that was indicated was the aluminium (?) 'nipple' that always
used to be on plugs used in different vehicles which one either kept
or threw away depending on ones plug lead types. No way is this a
resistor!
When I queried what the 'resistor' was for I was told that it was to
compensate (?) for the carbon fibre plug leads that are now commonly
used instead of copper and affected plug current and therefore timing.
Being an electronic engineer I know at least some of the foregoing is
hogwash - but am not sure how much is true of the plug architecture.
*Is* there perhaps an internal resistor on 'R' types or what?
Does it matter on the GS?
For further, but irrelevant here, info on this plug change (and
application for OMF number) see later message in UKRM. :-)
BP8ES sounds like an NGK plug. The "R" would mean resistor.
Most likely you already have the appropriate resistance in
the wire/cap assemblys.
You generally have a hard time buying non-resistor plugs at an
auto parts store but they should be readily available at any
motorcycle shop.
If you're really stuck with an autoparts store, ask them to cross-match
the NGK number. My local autozone was able to cross-match the NGK
number to Nippon-Denso and one other make of plug which they had in
stock.
If it''s really such a PITA, buy some extras on-line ahead of time.
.
- References:
- Spark Plug query
- From: Chris N Deuchar
- Spark Plug query
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