Re: Franco gear

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

On Thu, 13 Nov 1997 kirby.a.smith@lmco.com wrote:

> It was my understanding that the distributor hall effect sensor is critical only
> for engine starting, after that the timing is taken from the crankshaft and 
> adjusted electronically.  Is this for only certain Audi models?  If this is true
> then it would seem that adjusting the distributor at idle would be sufficient. 

I think that you are correct, however, the Franco gear advances the cam 
(and therefore the distributor) 7 deg at idle/startup, which I think is 
outside the window of acceptability for a startup.

> What kind of improvement would you conjecture for the normally aspirated NG 
> engine?

Well, I don't know this for sure, but I would guess at least a 10% 
improvement in low end and high end with roughly the same mid-range.   It 
broadens the usable torque band.

Later,
Graydon D. Stuckey 
****Standard disclaimer.****
Nothing I have said should be construed to mean anything you think I 
might have said in any way whatsoever.