instead of just a flat top they're done with a ball nosed end mill so the charge is directed to the top of the barrel so it should work alot better then my current ones. They're also a little deeper in the cylinder wall so should flow a little better. Cheers to Nick for milling them in while my milling machines still getting fixed :)
Also had to window the piston to allow the charge to flow into the port itself, because of the design of the crankcases they cant flow around the piston like a standard water cooled engine. Less then ideal but better then nothing. You can see ive sanded the uneven finish off the top of the stock piston as well, i never got round to polishing it :P
So ill see how these ones go and then experiment with 3 boost ports, and an extra wide single boost port.
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