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· Premium Member
2,021 Posts
either you or me must be missing somthing...(probbaly me)...if you have a vulcan, you have exactly one (1) intake valve at XXmm and if you have a duratec, you have exactly two (2) intake valves at 35mm. So your calculations may be a little off. But the theory is the same.


EDIT: I forgot....

also if you are talking about the duratec, the intake valves open at very diffrent times, thus the point of the 2 valves (longar intake duration)
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