<VV> Engine KNOCK

[Michael Kovacs]

 Thanks. A lesson for all of us. 

    On Monday, August 20, 2018, 7:09:19 PM EDT, Frank Parker <fparker at umich.edu> wrote:  
 
 Yes it does. Octane comes from the theeasy to evaporate components.

On Mon, Aug 20, 2018, 6:15 PM Michael Kovacs via VirtualVairs <virtualvairs at corvair.org> wrote:

 Seems like I forgot to post the solution to the '69 beater knock (detonation) problem. After trying all else, cleaning cylinder fins, new spark plugs, wires, and oil cooler checking to solve the problem, I decided to try the thing I thought of first. 

 I took 9 gallons of 2 year old gasoline (with Stabil ) out of the tank and put 9 gallons of 93 octane in. Problem solved. The engine always ran fine on 87-89?? 

 Guess the octane rating goes down when stored too long?  Thanks for all the advice.