Quote:
Originally Posted by doridoridori
obviously you never want the timing to be off but if it's a little off is it that detrimental to the well being of the engine?
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make sure the timing accurate within 1* or so. It is very important... yes.
If I tell the computer 9* and it does 10* instead this can be a huge problem
same thing if I command 9* and get 8*.
In the first place, if the torque is high enough it may hammer the rod bearings or take flakes of aluminum from the piston surface
In the latter it could raise egt and throw 18% or more torque away, also potentially melting the manifold, ruining the coating, or starting a fire.
Those are extreme examples -say 28 to 32psi of boost on a methanol/gasoline- but it illustrates the importance of knowing 'where you are'