Date: Tue, 30 Mar 1999 08:54:28 -0500
Subject: Re: Spark Plug Cross Reference
From: Chris L Johnson 

On Tue, 30 Mar 1999 07:45:26 -0500 (EST) sherpa "at" homemail.com writes:
>Hi friends,
>
>Where can I find a spark plug cross reference list?  I've got a 
>dual-shock Fantic that calls for a Champion N3, which doesn't seem to 
>be available anymore.  It's physical size looks "conventional", so I 
>assume NGK or Bosch makes an equivalent plug.
>
>Also, what is the Bosch equivalent to NGK BP5ES for use in my GasGas?
>
>Thanks in advance for any help.
>
>SFG

It's simple and not all that particular or a big deal in trials.  Use a
hot-as-hell plug for trials, unless you also use your bike for Speedway! 
Remember, "hot" does not mean the spark is any hotter.  It's simply a
measure of the thermal conductivity/resistance of the ceramic tip. 
Hotter tips have deeper grooves around them and run cleaner in low-stress
machines like trials bikes.

I use the hottest, the Champion N12YC, a very commonly available plug, in
anything I can get it into.  Only problem with that plug is it does not
have a screw off tip, so it only works on caps that accomodate the
non-threaded tip or screw on sleeve.

A near equivalent NGK is the BP5ES, another hot plug.

I gap all trials plugs at .022" to .025" to aid low RPM spark by reducing
the dialetric resistance.

--------------------------------------------------------------

From: ron brehm 

 I've got a dual-shock Fantic that calls for a Champion N3, which doesn't
seem to 
>be available anymore.  It's physical size looks "conventional", so I
assume NGK or Bosch makes an equivalent plug.
>
>Also, what is the Bosch equivalent to NGK BP5ES for use in my GasGas?

Run the Bosch Platinum WR7DP in all bikes except for the Fantics, that
have a special plug. For the Sections, run the F6DP. Gap them at
.022-.025, end of spark plug worries. You couldn't give me a Champion
plug, but some people luck out with them. Bosch Platinum is the only plug
to use in a Trials bike as far as I'm concerned. 
___________________________________________________________________

> Where can I find a spark plug cross reference list?  I've got a dual-shock 
Fantic that calls for a Champion N3, which doesn't seem to be available anymore.  
It's physical size looks "conventional", so I assume NGK or Bosch makes an equivalent plug.
> 
> Also, what is the Bosch equivalent to NGK BP5ES for use in my GasGas?

BP5ES = Champion N11YC = Bosch WR8DP

The Bosch is brilliant.

Billy d
DG Instrumentation Ltd.
http://www.corp.direct.ca/ginseng/dginst/main.html