Retapping Engine Block (water feed line)

[chayxse]

So I was installing new lines for the water feed to the turbo, and stripped out part of the thread into the block. I got the taps (plug and tapered) for retapping it, but was wondering if there were any suggestions as to a "proper" was to do this. The engine is still in the car btw.

I'm just having problems getting the tap to start threading. I am leading the the conclusion of making the hole bigger and tapping with a larger thread, but I'm sure thats not the ideal was to do this.

Any suggestions would help. Thanks.

[AutoMods]

i'd try tapping the same size first. just push in hard while turning the tap to get it to initially dig in. I wonder if using permatex water pump gasket maker would help seal damaged threads if they still leak. sometimes those things are hard to fix when in the car still.