spark plugs
Stellar HDF Member
Joined: Mar 2016
Posts: 2,285
Likes: 965
From: Eastern NC
Been running these in my 83 and 94 w/o issues for couple of years. Both machines run strong. Maybe I'll try autolite and see if there is any difference.
NGK 7634 BPR5ES-11 Nickel Spark Plug
Seasoned HDF Member
Joined: Jul 2014
Posts: 8,613
Likes: 3,380
From: Cental, MI
I do Know however, that Exotic metals do Not give up electrons as freely as Good Ole Copper...which all Racers do Know!!
Last edited by Racepres; Jan 1, 2025 at 09:04 AM.
Stellar HDF Member
Joined: Mar 2016
Posts: 2,285
Likes: 965
From: Eastern NC
Never...Ever, heard of Spark Plugs making any seat of the Pants,Performance Difference... If they did I should think we would have heard of that at the Race Track???
I do Know however, that Exotic metals do Not give up electrons as freely as Good Ole Copper...which all Racers do Know!!
I do Know however, that Exotic metals do Not give up electrons as freely as Good Ole Copper...which all Racers do Know!!
Stellar HDF Member
Joined: Mar 2017
Posts: 2,597
Likes: 2,173
From: australia
i did have problems with NGK mainly on my magneto old brit and old honda...... would run one one cylinder pull the cap out about 1" on the non running cylinder and it would fire up , put cap back on and one cylinder again, changed them for two bosch problem solved.....same thing on my 1962 250cc honda twin, while tuning a rebuilt motor one fouled ,after that the plug was useless even after a good clean up changed them over for some new NGKs and problem solved.........not saying keep away from NGKs but just be aware of them............. yeah Champions in the shovel, no worries
Last edited by old mago; Jan 1, 2025 at 09:39 PM.
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Club Member
Joined: Mar 2009
Posts: 66,136
Likes: 51,475
From: Niles Canyon Ca.
You are having problems with the plugs you may a weak coil, degrading wires or the wrong plug range, the correct NGK is about as trouble free as it gets for plugs. Autolite is next, lost the love for Champions in shovel a couple decades ago, something changed with them and they just don't last and foul quick no matter the engine build.
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Stellar HDF Member
Joined: May 2018
Posts: 2,177
Likes: 435
From: australia
You are having problems with the plugs you may a weak coil, degrading wires or the wrong plug range, the correct NGK is about as trouble free as it gets for plugs. Autolite is next, lost the love for Champions in shovel a couple decades ago, something changed with them and they just don't last and foul quick no matter the engine build.