Guest Posted October 11, 2010 Share Posted October 11, 2010 Hi,Yesterday i removed a very old spark plug from my CLR125 and along came the thread with it. It was tight when i removed it so i think it got cross threaded by the last owner and now its completely nackered. Tomorrow i'm going to attempt to re-thread it myself by using an Armstrong Spark Plug Thread repair kit. However the kits i've been looking at (theres 3 sizes) only have steel helicoils with them. Is this going to pose a problem having an aluminium head?The spark plug i need to install is DPR8EA-9 (NGK). I'm lead to believe the diameter is 12mm but have no idea on the thread size. Does anyone know the full spec of this plug?Any tips/tricks will help as im a complete noviceIf anyone can help i'd be most grateful Quote Link to comment Share on other sites More sharing options...
Guest Posted October 12, 2010 Share Posted October 12, 2010 if your going to re-coil/thread it, it would be best to remove the head to stop any swarf/scrap fillings getting into the bore..you could try a hoover to remove , or a magnet wand, but best to be 100% and remove the head. Quote Link to comment Share on other sites More sharing options...
fredc Posted October 12, 2010 Share Posted October 12, 2010 or a magnet wandmagnets dont work on aluminiumThe only way to be certain there's no swarf in the engine is to take the head off Quote Link to comment Share on other sites More sharing options...
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