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Non Resistor-Plug versus Resistor???

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Marc Trudeau

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Apr 3, 1996, 3:00:00 AM4/3/96
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The owner manual for my 92 RM250 recommends running NGK BR8EV resistor
spark plug (for Canadian bikes). The use of Resistor plugs does not
appear to be suggested in the U.S. The regular NGK B8EV (non resistor)
are a bit cheaper and much easier to find. Can I damage my CDI running
non-resistor plugs?? Or could it be just a Canadian law to prevent radio
communication interference that is normally caused by non resistor
plugs?? I tried B8EV's and they perform just the same.

I appreciate your advices.

Marc Trudeau


TEidam

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Apr 3, 1996, 3:00:00 AM4/3/96
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In article <4juc1v$d...@news1.io.org>, Marc Trudeau <ma...@io.org> writes:

>The owner manual for my 92 RM250 recommends running NGK BR8EV resistor
>spark plug (for Canadian bikes). The use of Resistor plugs does not
>appear to be suggested in the U.S.

The owners manual for my 94 RMX250 recommends the resistor type plug and
it is a U.S. bike and manual.

>Can I damage my CDI running non-resistor plugs?? Or could it be just a
Canadian >law to prevent radio communication interference that is normally
caused by non >resistor plugs??

The mechanic at my Suzuki dealer says I should run the resistor plug to
prevent CDI damage. He says it will not effect engine performance just
long term life of the CDI box. Try the standard ES versions, they are
avalible in resistor type and are cheaper then the EV racing plugs (BR8ES,
BR9ES). I have stocked up on resistor plugs.

TEidam
"When in doubt, GAS IT!!!"

Jan Servaites

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Apr 3, 1996, 3:00:00 AM4/3/96
to Marc Trudeau
Marc Trudeau wrote:
>
> The owner manual for my 92 RM250 recommends running NGK BR8EV resistor
> spark plug (for Canadian bikes). The use of Resistor plugs does not
> appear to be suggested in the U.S. The regular NGK B8EV (non resistor)
> are a bit cheaper and much easier to find. Can I damage my CDI running
> non-resistor plugs??
> Marc TrudeauMarc,
There was a long thread about this subject on the 2-stroke
newsgroup last month. The result was the non-resistor plug should
reto-fit your BR8EV with no further problems. The resistor plug suppress
the RF from the impulse spike of the coil. The CDI shouldn't be risked
from just the plug change. However, there is probably more risk to the
CDI by not grounding the high voltage ignition lead to the engine block
when one is spinning the engine by the kick starter. jumpin'jan
http://mall.turnpike.net/~servaijm

Robert Jordan

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Apr 4, 1996, 3:00:00 AM4/4/96
to
Marc Trudeau wrote:
>
> The owner manual for my 92 RM250 recommends running NGK BR8EV resistor
> spark plug (for Canadian bikes). The use of Resistor plugs does not
> appear to be suggested in the U.S. The regular NGK B8EV (non resistor)
> are a bit cheaper and much easier to find. Can I damage my CDI running
> non-resistor plugs?? Or could it be just a Canadian law to prevent radio
> communication interference that is normally caused by non resistor
> plugs?? I tried B8EV's and they perform just the same.
>
> I appreciate your advices.
>
> Marc Trudeau

It's mostly radio interference. The CDI's are designed with large
safety margines and should be able to handle any weird spikes. The
resistor plugs do help to lower the odd spike, but I've never had a
problem.

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