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NGK R7282A plug


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mighty max
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NGK R7282A plug

Thu Aug 08, 2013 2:58 am » Post: #1 » Download Post

Is it possible to use R7282A plug with out detonation counter onto my rs coil and trs1225 cap for my nsr mc28? This is because i'm a bit confuse that R7282 plug can use with out detonation counter.
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Andy
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Thu Aug 08, 2013 3:48 am » Post: #2 » Download Post

The R7282A has a longer thread, so it will protrude further into the combustion chamber, and you run the risk of either the piston crown touching the plug, or creating a hotspot on the crown. Either situation could be devastating.

The simple answer is to use the R7282, or HRC spacer rings, which we can do for £15 a pair plus shipping.

You could probably make the spacers however, if you so wish, but you need to make sure you get the thickness correct to ensure the electrode protrudes into the combustion chamber the correct distance.
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