Tapping block for oil return bung

[tig]

Most people seem to tap the oil pan for the oil return line. I've seen some folks tap the block.

I think I'd prefer to tap the block (which is not yet installed in a car). I read someone tapped it here (see 'X"):


I was thinking of a weld on bung like this:


In AN -10.

Thoughts?

[demetk]

Since I like my a/c that spot would have been a bit inconvenient. I simply did a 1/2 npt fitting on mine.

[T_C_D]

Tapping the block potentially makes the oil return more difficult to route and possibly an issue for sufficient pitch. Weld a bung in the oil pan.