Re-Thread with HeliCoil
By: rev_rage
(From: http://www.preludepower.com/forums/showthread.php?t=339340)

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Two days ago, I didn't even know what Helicoil was. Today, I will show you how easy it is to re-thread a 3rd gen oil pump and rear crank seal.

Supply's needed:
1/4 quality drill bit for metal, don't use a wood bit
Punch - I used a 1/8 punch
helicoil kit # 5546-6 or M6x1 this kit contains:
12 coils
Tap
and the coil insert tool




First step is to drill out the old threads with the 1/4 Bit. I used a magic marker to mark the drill bit so I don't drill into the block to far. Take your time when your drilling the block. Nice, Easy, and Slow

 


Clean the hole out with an air compressor, use the tap to make new threads, once again I used a marker as a depth indicator. clean insides again. remember nice and easy.

 


With new threads in the bolt holes you need to grab your coil insert tool and screw the coils on the tool like this:

 


Screw the coil into the tapped holes:

 


With the coil inserted in the holes, you need to used the punch to break off the little tab, and then use your air compressor to blow it out, or do what I did and stick some gum at the end your punch to pull it out. DONE!