RE: Franco Sprocket

["Graydon D. Stuckey" <graydon@apollo.gmi.edu>]

On Sat, 22 Nov 1997, Ned Ritchie wrote:

> CONCLUSIONS:
> Franco sprocket with a stock 5000CS turbo quattro engine cam does
> increase performance but could not feel in seat of the pants. 
> More effective to increase boost .
> RECOMMENDATION:
> I feel that better results could be obtained using a radically ground
> cam for high RPM performance and change its timing for better idle. 

That's possible.   I think however based on my not-so-scientific 
research, that the Franco cam sprocket could stand to be a little more 
radical in its range of adjustment.

Here's why...   I have played with advancing the cam one full tooth, and 
retarding the cam one full tooth.   The advanced cam has slightly better 
low end, but the retarded cam has a lot more punch in the top end.  It 
was my theory that if we could tweak the cam timing for each rpm range, 
then we might see some pretty serious gains in overall performance.

I'd like to do it with ECU control of the cam advance.   This way, cam 
advance would be a calibratable parameter.

Later,
Graydon D. Stuckey 
out of ideas for a cool .sig file...    sorry.