[Diy_efi] Tapping Metric Injector Threads

[Joshua Wingell]

On Fri, 10 Jan 2003 07:35:08 -0700
  bearbvd at mindspring.com (Greg Hermann) wrote:
>For a blind hole, one taps FIRST with a taper tap, until 
>the end of the tap
>hits the bottom of the hole--then the threads are chased 
>first with a plug
>tap, and finally with a bottoming tap so as to get full 
>depth threads clear
>to the bottom of the hole.

I once had to tap a blind hole into an engine block.  But 
try finding a bottoming tap on short notice.  So I tapped 
in with a taper tap, then cut the tapered end off of the 
tap with my dremel's cutoff wheel, filed the edges of the 
tap a little and made my own bottoming tap.  Worked 
beautifully.

Josh

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