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Old 12-09-2016, 11:05 AM   #1
katy
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Default 18mm spark plug adapter?
Does anyone make a spark plug adapter for a Model A that accepts 18mm plugs?
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Old 12-09-2016, 11:36 AM   #2
Fullraceflathead
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Default Re: 18mm spark plug adapter?
I'm not aware of any.
You could drill out the 14mm ones and tap 18mm threads.
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Old 12-09-2016, 11:47 AM   #3
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Default Re: 18mm spark plug adapter?
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Why not just buy the proper plugs and forget about the adapter. Wayne
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Old 12-10-2016, 05:01 PM   #4
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Default Re: 18mm spark plug adapter?
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You could drill out the 14mm ones and tap 18mm threads.
I had thought of that, but I figured between buying a 14mm adapter and an 18mm tap I'd be further ahead just buying an 18mm adapter, ifn they're available.
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Old 12-10-2016, 06:01 PM   #5
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Unhappy Re: 18mm spark plug adapter?
Quote:
Originally Posted by katy View Post
I had thought of that, but I figured between buying a 14mm adapter and an 18mm tap I'd be further ahead just buying an 18mm adapter, ifn they're available.
And why not buy the proper plugs ?
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