Plug problems

["Tim Shaw" <tashaw@domain.elided>]

Hi,

 

    I have just fitted electronic ignition to my stag, and disturbed the spark plugs for the first time ( I've had the car six months). I've discovered to my horror that 3 out of 8 plugs threads are stripped. The plugs will go in but I can rock them up and down with my fingers. The car runs better than before with the new ignition, and all 8 cylinders are firing, but it can't be good having loose plugs? Is there any method of securing them without using helicoils which I assume will mean removing the heads, at which point I might as well go the whole hog and get unleaded valves fitted?

All suggestions gratefully received,

 

cheers,

 

Tim Shaw

1974 mkII Auto

Brighton, UK