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Old 05-23-2012, 02:43 PM
Irelands child's Avatar
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Plug gap

I'm replacing my original as supplied crate motor plugs - well for no other reason then I want to. Those plugs are Motorcraft AWSF32 platinum, my replacements are NGK TR55GP, also platinums. The originals are gapped at .054 and is the stock figure. Now, that engine, 9.5c.r./ Ford's 'E' camshaft, 1.7 rockers /full MSD - box, coil and distributor. My thinking is that the gap should be in the .060 - .063 range for clean combustion with E10 gasoline.
Any thoughts??

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Old 05-23-2012, 06:33 PM
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0.060" is as high as I would go, but there's nothing wrong w/gapping them up from 0.040"- 0.050", in 0.005" increments to see where the sweet spot is.
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