Gordon Jennings, the famed 2-stroke engine expert and author of "The Two-Stroke Tuners handbook" said in the 1970s, and I quote:
Quote:
The first serious mistake a layman experimenter can make is to assume that those who designed and manufactured his particular engine didnt know what they were doing.
The professional engineer knows very well,......all engines are compromised, from what you might consider an ideal, in the interest of manufacturing economy and broad usefulness.
Another mistake commonly made,....is to believe in a kind of mechanistic magic. ....bigger carbs, higher compression ratios, ...often do bring an an improvement in power output, but more and bigger is not instantly, magically better. All must work in concert with the basic engine, directed towards the particular application, before they constitute a genuine improvement.
You cannot treat them as a voodoo incantation, hoping that if you mutter the right phrases and stir the chicken entrails in the prescribed manner, your mild-mannered, all-purpose chuffer will be transformed into a hyperhorsepower firebreather. With a lot of luck, you might get that result; the chances heavily are that you wont.
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I am sure everyone here can understand what he is trying to say. Truer words couldnt be spoken even today, in the 21st century.
My idea here is not to argue or belittle anyone, but to make us, the consumers, better informed. Therefore it goes without saying that I mean no offense to any of the tuners or people selling performance parts.