924Board.org

JMALONE26 · Joined: 04 Oct 2009 Posts: 165 Location: Staten Island, NY

I've noticed the earlier 931's have the primary/secondary set up and the later ones have just one. Is there a difference?

morghen · Joined: 21 Jan 2005 Posts: 9095 Location: Romania

yes...later ones are more brutal...then again the character of the car is POWER OFF | POWER ON
_________________
Supercharger and EFI kits
https://www.the924.com

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Related Reading:
Throttle body comparo --> stock/Weber/Audi

And from this thread:

Rich H · Posted: Tue Nov 03, 2009 10:24 pm Post subject:

I was under the impression that the smaller throttle was for low rev control and the larger one for power.

A single larger throttle will give a snappier response and feel quicker as a smaller pedal movement will give a bigger throttle area, but at WOT it's still the same sort of area.

OK there is a larger boundary layer due to the 2 smaller throats but the difference will most likely be masked by the myriad of other minor differnces betwen cars anyway.

Rich
_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec

Joes924Racer · Posted: Wed Mar 31, 2010 5:14 pm Post subject:

Isnt there a sensor or something on the tb that needs to be adapted to
a webber single throat?
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.