<VV> igntion curve

[djtcz at comcast.net]

Unless higher octane gas is used at '''events," an optimized centrifugal advance and initial timing would be the same as the everyday street setting. 
Advancing the timing when VA disconnected would "over" advance the timing and result in pinging/detonation at full throttle . 


Tuning the mech advance would be evaluated at full throttle, rpm by rpm to make a curve. 


Yeah, in theory the knock eliminator should protect the engine, within it's capabilities to retard the timing. 



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Ok so from the replies thus far I got some general ideas on where to start 
as far as springs go, not too much on different weights. Apparently trying 
to recurve the distributor to suit my engine is going to be a matter of 
trial and error. 

About the VA, the vast majority of the time I'm going to be driving this 
car on the street so retaining the VA for fuel mileage would be better. If 
it is practical I can disconnect and plug off the VA when I get to a 
competitive event and advance the base timing appropriately. 

I'll be running the Carter knock eliminator for what that is worth. I'd 
love to think that device would allow me to advance the hell out of the 
timing and count on it to prevent engine damage but I'm sure that would be 
a horrible idea. 

Ray R.