[Diy_efi] Timing Advance Curve?

[Djfreggens at aol.com]

or if youd like the simple sum of it all 

  detonation is a pressure wave that meets an oncoming flame front.and cuases 
an instintainous rise in combustion pressures. but these are small focused 
expolsions. 

  preignition is a secondary flame front propogated ahead of the spark 
ignited flame front that can lead to a instintaneous rise in combustion 
pressure cuasing knock or detonation. but it may not nessacaryly be the cuase 
of detonation. also preignition is usually trigged by sharp edges or hot 
spots of carbon,metal etc etc in the combustion chamber. 

  either way detonation is still bascially a very large spike in combustion 
pressure. however its more like a blast of C4 plastic explosive then a 
controlled properly burning flame front that produces usefull cylinder 
pressure.if youve been around for a while im sure youve heard about the 
inherent dangers of detonation and the damage it can do. you should however 
do some reading on ways to aviod it.    

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