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Difference between sparkplugs B8ES vs BR8ES?


richybanshee

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The purpose of said resistor is to reduce/eliminate RFI (RadioFrequencyInterference)....call it static noise if you like.

 

Maybe you've ridden in a hot rod that has solid core spark plug wires (and/or no 'R' plugs)? Turned on the radio and heard a bunch of racket? That's coming from the spark plug wires acting like antennas. Every time the spark field collapses (read: plug fire time) a solid core wire will broadcast just like a radio antenna. A resistor in the plug prevents the field in the wire from collapsing at spark time..no RFI (well..not from the wire, anyway).

 

So...you have some delicate electronics on board? Maybe a CDI? Some such devices can be flat-out damaged by such broadcast noise. Some machines can show devious sparky symptoms...misfires, hi-rpm droputs...if they have a sensitive spark box.

 

If you're dealing with onboard computers!!...well, they had better be protected!

 

While some may argue, the fact is that you can find a number of dyno runs or o-scope graphs that show slight power gains/voltage increases with the use of resistor plugs. Not a big deal.

 

While your Banshee will run likely run just fine without the 'R'...you aren't hurting anything by RUNNING an 'R' plug. The few cents more you pay will show its reward in the clean sound you will get in your helmet speakers that are plugged into your ipod! ;)

Edited by canyncarvr
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Good Argument canyncarvr: you have convice me.

So this is the same noise we listen when driving in our cars with the new stereo system and a ground on the amplifier is not connected properly or when patch cables run parallel to the live amp wire.

 

:blink:

308464[/snapback]

 

It's not the same noise, it's just another possibility. They started making resitor plugs and wires in 1948 when the old tnt site were going off for no reason. They were radio controlled.

Edited by fixitrod
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It may be all in my head but it sure seams like I get a longer service life and better performance towards the end of the life with non-resistor B8ES. The only plug that I have had develop a miss because it was apparently worn out even though it looked good was a BR8ES, probably just by coincidence. If I rode my bike back to back with either plug I'm sure there wouldn't be a noticeable difference.

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How did you wear out a sparkplug on your banshee? I had the same set of plugs in my shee for over 4 years with no problems. I always run resister plugs because thats what came on my shee. They don't really give up anything to non resister plugs. They cost the same amount. Currently I run BR8EG fine wire plugs. They don't seem to foul out as often on a overly rich running machine.

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  • 3 weeks later...
Good Argument canyncarvr: you have convice me.

So this is the same noise we listen when driving in our cars with the new stereo system and a ground on the amplifier is not connected properly or when patch cables run parallel to the live amp wire.

 

:blink:

308464[/snapback]

 

That has to do with a small transistor or capacitor (works as a filter) or something like that that should be attached to your alternator. Not all new alternators come with these so you have to make sure to add it. it is like a couple $ item.

 

http://www.sacskyranch.com/altnoise.htm

Edited by Justintoxicated
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OK, since we're on the topic of spark plugs (non-resistor type) affecting electronics, could they affect the camcorder in my backpack? For some weird reason I picked up a butt load of weird noise in the microphone last time I went for a ride...the video came out clean but the sound was horrible.... :cheers:

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In your banshee's spark plug caps, there are resistors built in. From the factory. IN the factory caps. Now, if you change spark plug caps, to something other than stock, or some that lack the internal resistor, SERIOUS damage to your CDI will result. In a case such as this, you will have to run the "R" style plugs. Now, NGK makes plug caps that have a resistor built in. I run them on my bike. This is VERY IMPORTANT to realize. You need to have a resistor in line to minimize interference. So, either "loaded" caps, or "R" plugs. You make the call. You can also use "R" plugs and resistor caps. I do, and don't have a problem.

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