View Full Version : Spark plug size
pro116
12-27-2003, 04:18 PM
My buddy stripped his head on his 400ex does any one know what size tap to use?
pro116
12-28-2003, 01:23 AM
ttt
Colby@C&DRacing
12-28-2003, 12:46 PM
The hole from the factory is 12mm I believe. Use a 14mm thread insert to fix it.
Fruteless
12-28-2003, 01:10 PM
I don't know if it helps but I did that once and I tapped it and put grease on the tap to catch the metal shavings.:D
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