Throttle body return spring, 1.8 L-Jet setup Options

[MrKona]

Used to read the 914 parts diagram catalog like a novel and thought I had it all figured out. But after seeing an old picture in the Classifieds today of an L-jet throttle body with a spring, I realized I don't have this spring.

Porsche calls it the Return Spring 022 129 881 F.

Can someone with a 1.8 L-Jet please post a picture of where this spring connects. I can see where it connects on the TB, but what about the other end? On the plenum, or body sheet metal somewhere?

Thanks,
Bryan

[tomeric914]

What is the actual purpose of the long spring? It seems like it prevents the throttle from closing too quickly. The actual return spring is wrapped around the TB shaft.

[Dave_Darling]

What is the actual purpose of the long spring? It seems like it prevents the throttle from closing too quickly. The actual return spring is wrapped around the TB shaft.

It's like the spring on the 2.0 throttle body--at least, all but the early 73s. The long coil spring is the primary return spring; the one coiled around the throttle shaft is the "supplemental return spring", and is intended to let the throttle close if the primary spring breaks.

--DD