Abrasive flow finishing

[amcknig at creighteld.k12.az.us]

While all this concern about port polishing sounds good, It appears 
to me that a more important point is the delivering of a combustible 
mixture to the cylinder is more important.  As we get the delivery of 
the fuel closer to the cylinder, the problem of mixing  seems to get 
greater.  There are many articles on mixture control, one of the more 
sophisticated seems to be Toyota.  They seem to have controlled the 
mixture to the point that they are limiting the heat loss thru the 
cylinder walls by focusing the combustible mixture into the center of 
the charge.  This makes sense to me, it doesn't seem very wise just 
to deliver lots of fuel so the radiator will have something to do.

Bob McKnight
Phoenix AZ