TRX250R.ORG
Workshop => Engine and Bottom End => Topic started by: The norm on January 16, 2021, 08:38:16 PM
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I'm sure everyone knows that NGK has discontinued the B8ES spark plug. What has everyone switched to? I did a search on here and didn't see a previous thread. Let me know what plug you guys are running with a stock ignition and with a CR ignition.
Thanks Loren
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1. Go to every auto parts store in your town and clean them out of the B8ES plug.
2. Purchase Honda part number (98079-58840). That part number is a NGK B8ES plug. Should be $3.00 at your local Honda shop.
Joe
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I will be purchasing a lifetime supply before they all disappear. Have a good start with about 10 on hand right now.
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I was able to locate a readily available alternative to the B8es plug. I bought a handful of B8eg which is supposed to be a better plug according to several MX forums. The 1997-2001 CR250 manual calls for a NGKBR8EG plug among a few other options. I am not sure if the CR ignition performs better with a resistor plug or non resistor plug.
Loren
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Thats a viable option since the BR8EG is what is used in the CR250.
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Supposedly the B8EG plug is less susceptible to fouling. I have probably fouled 3 plugs in 20+ years so I'm not too concerned about it.
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Fouled plugs only happen from improper jetting or from an engine thats getting worn & tired but even a tired engine can be re-jetted to prevent plug fouling. If you've only fouled 3 plugs in 20+ years that means your good at tuning & maintenance.
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I'll go with lucky lol
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I work in the automotive industry and my local Napa rep gave me some E3 plugs to try and I've actually had good luck with them. (though I still keep an NGK on me, just in case).
E3.31 is the part number that interchanges to the B8ES
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Good info!
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They quit making the b8es? I was looking through the manual on my last plug order and re-discovered Honda recommended a 9 heat range, so I’m trying those for now
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I ran the eg plug and had good luck with it. CR ignition. Ran that plug the entire time I had my R. Little thin wire plug.
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Been running BR8ES's in both bikes with CR ignitions. Have tried BR8IX's and those seem good too but didn't seen a 3x improvement to warrant the price point. We did run those exclusively in Super on alcohol though.
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I bought two boxes of the B8EG and will run them in all 3 R's. The boys have oem ignitions and those do not need resistor plugs