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5/8 spark plug

Old 01-01-2024, 03:14 AM
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voodoodb
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Default 5/8 spark plug

Can someone tell me a 5/8 replacement Champion plug for a RCJ6y? This is a 3/4 plug and the booton my ignition is 5/8.
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Old 01-01-2024, 04:03 AM
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Tony Hallo
 
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Google is your friend, there are 52 possibilities, if running on a mag make sure to use a resistor type plug.
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Old 01-01-2024, 09:24 AM
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.More than one way to go
I think it is better to replace the boot.
Here is one possibility :

https://ch-ignitions.com/product/rep...for-ngk-bosch/
This company can fix you up no matter how you make a change. Contact "Adrian"
Others would be ... give C&H a ring.

CONTACT INFORMATION

Address

CH Ignitions
14842 93rd St. N
West Palm Beach, FL33412

Phone

(561)927-6171

Email
[email protected]

Last edited by kmeyers; 01-01-2024 at 10:28 AM.
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Old 01-01-2024, 03:51 PM
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NGK BPMR6F if your engine will accept a tapered seat plug .... and most will. There is a washered equivalent but I don't have that #. These plugs fit the 5/8" caps perfectly. Ralph Cunningham put me onto these years ago and I never used a 3/4" plug again.

Edit: NGK BPMR6A is washered version.

Last edited by Truckracer; 01-01-2024 at 04:07 PM.
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Old 01-03-2024, 01:37 PM
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Thanks Racer
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