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The BSA A7 & A10 Forum > Technical > Lucas, Electrical, Ignition  > bsa a10gold flash spark plugs
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Author Topic: bsa a10gold flash spark plugs  (Read 166 times)
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rockthedog
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« on: 21.10. 2011 21:22 »
hi can anyone tell me if the spark plugs in my 1958 a10 should be long reach or short reach as mine are short and a friends a10 are long cheers mal
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muskrat
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Lake Conjola NSW Oz
« Reply #1 on: 21.10. 2011 21:52 »
G'day rockthedog, alloy head use long reach NGK B7ES, iron head use short reach B7HS.
Cheers
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Only young once, immature forever. Now how can I make this go faster. '51 A7 plunger, '57 A7SS now A10, '71 A65 Lightning (gone to god) '76 XT500, '83 CB1100F, next project a '64 A65.
rockthedog
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« Reply #2 on: 21.10. 2011 21:58 »
Quote from: muskrat on 21.10. 2011 21:52
G'day rockthedog, alloy head use long reach NGK B7ES, iron head use short reach B7HS.
Cheers
thank you muskrat
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wilko
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« Reply #3 on: 21.10. 2011 23:34 »
Unless some designer botched it, 99 percent of engines always use longreach for aluminium heads.Chainsaws and mowers are a few exceptions.
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