SC Engine question

[shaunmbenson]

Hi Folks
Newer member -- hello! and thanks for being here.

So I'm buying a 3.2 or SC soon. Owned 3.2 cars before but never SC and am thinking I may be interested in the more raw light weight earlier cars. My last 3.2 cars were daily drivers and this one won't be!

My question is - What is this that I see on some SC cars

Porsche 911 SC 3.0 Targa, 1979

and why is it on some but not many?

Thanks!
Shaun

[82 SC]

Looks like a smog pump? Mine was missing on mine.

[shaunmbenson]

Thanks!

good to know

Best
Shaun