Tapping Exhaust Manifold

[JLWelding]

I found my thread tap but no drill bit. Anybody know what size drill bit? Pricol gauges.

 

[Powerstroke Cowboy]

What is the size of the tap???? that would help

 

[MSquare]

go to the pricol site and look it up

 

[Got Smoke?]

Usually pyro probes are a Letter R drill bit and 1/8-27npt tap

 

[joefarmer]

You can also use a 11/32 for the 1/8 npt.