hmmmm jetting gone wild

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stomlinson
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hmmmm jetting gone wild

Post by stomlinson »

I had a completly stock kdx 200 e series and over the winter I mounted a set of 2003 kx forks using rb designs, also I had my head modded and my carb done as well. While the parts were there I informed ron I had just bought an fmf fatty pipe and silencer, a boyseen rad valve, and a brand new set of lungs via uni filter. When I got it all back the parts looked trick:-D. Very nice work!!!! And the bike runs crazy fast, right out of the box. But I now noticed the parts he sent back.... 48 pilot, and a 158 main now with letting the engine breath so much better I was wondering why he went down in jet sizes to a 40 pilot and a 152 main, I would think more air more fuel??????
kdx633
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Post by kdx633 »

As an engine pumps more air the stronger the force acting to push fuel through the jets.
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