Spark plugs instead of b7es

Bobdudeman
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Spark plugs instead of b7es

21 Apr 2022 06:23

Morning everybody. Looking for a cross reference to NGK B7es for my KZ650 1978.
any input would be awesome, ty! The b8es are too cool.

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Warren3200gt
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Re: Spark plugs instead of b7es

21 Apr 2022 06:27

#865874

Denso W22es is the way to go. Heaps better than ngk.

Z1000J2 somewhat modified!

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Bobdudeman
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Re: Spark plugs instead of b7es

21 Apr 2022 06:37

#865878

Thanks man, is there anything I can get locally at say AutoZone or advance Auto parts today? I don't think they carry that brand

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Bobdudeman
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Re: Spark plugs instead of b7es

21 Apr 2022 06:40

#865879

Is that the w22es-u?

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Warren3200gt
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Re: Spark plugs instead of b7es

21 Apr 2022 06:40

#865880

Wouldn't know, I'm in the UK.

Z1000J2 somewhat modified!

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Warren3200gt
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Re: Spark plugs instead of b7es

21 Apr 2022 06:41

#865881

wrote:

Is that the w22es-u?

Yep.

Z1000J2 somewhat modified!

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650ed
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Re: Spark plugs instead of b7es

21 Apr 2022 06:47

#865882

I've been using ND W22ES-U spark plugs in my KZ650-C1 for the past 20 years and have found them to be superior to the NGK plugs I previously used. Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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Bobdudeman
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Re: Spark plugs instead of b7es

21 Apr 2022 07:29

#865884

Thanks Ed.

Looks like I never checked my recent plugs numbers. Looks like they gave me NGK BR7ES vs the B7ES. They are already sorta fouled and wet. Is that due to the R rating ?

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zed1015
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Re: Spark plugs instead of b7es

21 Apr 2022 08:06

#865888

wrote:

Thanks Ed.

Looks like I never checked my recent plugs numbers. Looks like they gave me NGK BR7ES vs the B7ES. They are already sorta fouled and wet. Is that due to the R rating ?

Very likely..
The R stands for resistor.
You should only have one source of resistance which should have been in the plug cap.
Adding a second resistance will weaken the spark and increase the chance of fouling.
If you continue to use the BR7ES you should fit non resistor caps.

AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
www.kzrider.com/23-for-sale/611992-air-c...lide-mikunis?start=0

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Nessism
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Re: Spark plugs instead of b7es

21 Apr 2022 08:51

#865891

I've read about people removing the resistor from OEM plug caps, thus allowing use of resistor plugs.

Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0

www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread

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