<VV> Retard timing

[FrankCB at aol.com]

Richard,
 
So your premium gas costs 7 to 10% more than regular.  Depending on  which 
Corvair engine you have, if you have to retard the timing in order to run  
regular, you may well find that you are losing 10% gas mileage by going from  
premium to regular.  In addition, the retarded timing will give you LESS  
acceleration for merging into traffic.  Again, depending on which engine  you 
have, you may discover that the economics of doing so don't justify your  
change.
 
Many Corvair engines were factory-designed to run on premium fuel.
 
Frank Burkhard
 
 
In a message dated 12/6/2010 6:49:28 P.M. Eastern Standard Time,  
rbeth at comcast.net writes:

Last  winter I had the motor rebuilt in my 63 Corvair Conv. I got the car 
back last  March
and since than I have put 12,000 miles on the Car. I live in Northern  
Virginia and Premium
Gas is 25 to 30 cents per gallon more that regular.  Would it hurt the 
motor if I retarded the
timing enough that I could use  regular gas and it would not Ping. I get 
about 22 MPG average
The  difference between using Permium and regular was about $165.00. I am 
75 and  retired
so every little bit helps. I hope to drive it more this year. I  want to 
wear out the car before I 
wear out. 

Richard  Bethard
Nokesville,  Va

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