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Helicoil for Spark Plug 700

I just had up a post about an ejected spark plug (90 740turbo with 282K miles)

I checked again and the threads are gone, except for about two turns at the very bottom.

Does anyone have special advice about using a heli/t-coil insert? I've never done it before, and doing it into an aluminum head as my first time is a little daunting.

Also, how do I know what size tap to get? Do I need to take in a matching spark plug?



Thanks,
Will
--
1990 740 Turbo, on its way to stock specs, maybe beyond






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New Helicoil for Spark Plug [700]
posted by  Will740turbo subscriber  on Thu Jul 30 11:14 CST 2009 >


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