<VV> Vacuum Advance? Re: custom distributor curve?

[BobHelt at aol.com]

That is Figure 1i.
Regards,
Bob Helt
 
 
In a message dated 2/22/2013 7:14:53 P.M. US Mountain Standard Time,  
BobHelt at aol.com writes:

NO NO!  The retard will work at low rpms as long as there is minimal  
boost.  
Boost starts around 2000rpm. Frank, look at the 65 Shop Manual page   6Y-16 
fig 11. Pressure retard retards spark to below static  setting.

Regards,
Bob Helt


In a message dated 2/22/2013  4:56:03 P.M. US Mountain Standard Time,  
robertkhenry at bellsouth.net  writes:

Consider  the completely stock turbo Corvair that   comes with NO vacuum
advance  and only has pressure ignition   RETARD that works at rpms ABOVE  
4000
(for the 1965 and 66   models).  Driving these cars in  traffic means using 
a
CONSTANT  FIXED  ignition timing (24 degrees  BTDC) until you get above  
4000
rpm AND  achieve some   boost
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