<VV> spark plug helicoils

[richard white]

One other thing make sure you get helicoils for sparkplugs. they will have a series of serrations on the end of  the last thread to lock them in place. The helicoil should be 1/4 to 1/2 turn below the first thread on the parent metal. There is also a tool to lock the helicoil in place. Not really necessary if you carefully upset the last thread of the parent metal with a punch.You must specify installed length to the jobber for your helicoil.


 Rich
       
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