Today, the G-Lader:

These were interesting systems and bolted to two different VW engines - G60 and G40. These ended up in a few Golf variants, Polo and even Passat, but is probably most recognizable from Corrado duty. The scroll-type supercharger did not end up being as reliable as VW had indicated, and from the enthusiast perspective were limited in terms of what could be wrung out of them. All of the reliability issue lies with VW, as they initially marketed these systems as "maintenance free" which was nowhere near the truth.

You can see the three main components in the disassembled unit above along the top row...the two halves of the housing and the displacer, which moves inside of the compressor body and comes within tenths of a millimeter of contacting the vanes. If it sounds complicated it's because it is.

Rev the balls off of something like that for 50k miles and see what happens. Maintenance-free my ass...

Advertisement

Anyway the packaging looks cool

They sound like sewing machines stock...

And angry dremels if you start playing with them...