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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
spark plugs
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<blockquote data-quote="Tom Gaynor" data-source="post: 15606" data-attributes="member: 4034"><p>John: thanks for that, I value your input since you have a lot more motors through your hands than I ever do! Today I dug out the new NGK BP6EPZ that failed on Sunday, after about 50 miles on the coil ignition, electronically triggered by Pazon, S7, and wiped (wiped...) the carbon off with a rag. I then tested it in my plug testing device. The untutored eye could easily mistake this for an original BTH mag off a 1930's Rudge, but of course it is really a miniature Hadron Collider (which would be a great name for a sixteener moped) with reverse suction transistorised widget valves. I hope you are suitably impressed. </p><p>Zilch. Nada. Nothing. The ancient Bosch plug, the Champion N5 (so old it's an N V), the much older NGK BP VI all produced a fat blue spark. (The mag isn't motored, I just flick the sprocket over by hand.)</p><p>What is particularly annoying is that in 30 years, no, dammit, 36 years, I have had to buy almost NO BP6's because they last forever, so have few used spares. In the last two years I've started being greeted at the door of Halfords by the manager.</p><p>I have any number of B10EV (TZ Yamaha) plugs, maybe 20. So if someone wants to make me an offer, little used, new for every start, I can pop round to Halfords again and buy some more BP6's...</p></blockquote><p></p>
[QUOTE="Tom Gaynor, post: 15606, member: 4034"] John: thanks for that, I value your input since you have a lot more motors through your hands than I ever do! Today I dug out the new NGK BP6EPZ that failed on Sunday, after about 50 miles on the coil ignition, electronically triggered by Pazon, S7, and wiped (wiped...) the carbon off with a rag. I then tested it in my plug testing device. The untutored eye could easily mistake this for an original BTH mag off a 1930's Rudge, but of course it is really a miniature Hadron Collider (which would be a great name for a sixteener moped) with reverse suction transistorised widget valves. I hope you are suitably impressed. Zilch. Nada. Nothing. The ancient Bosch plug, the Champion N5 (so old it's an N V), the much older NGK BP VI all produced a fat blue spark. (The mag isn't motored, I just flick the sprocket over by hand.) What is particularly annoying is that in 30 years, no, dammit, 36 years, I have had to buy almost NO BP6's because they last forever, so have few used spares. In the last two years I've started being greeted at the door of Halfords by the manager. I have any number of B10EV (TZ Yamaha) plugs, maybe 20. So if someone wants to make me an offer, little used, new for every start, I can pop round to Halfords again and buy some more BP6's... [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
spark plugs
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