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Originally Posted by primal
Easy, where did you see that the valves and cams are different? All I can tell is that its FI, has a single exhaust (does that imply that its only two valve now instead of 4 valve?), and a different compression ratio.
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Some (wild) assumptions were involved. If the number of valves is different, the cams have to be different too. Unless the bore and stroke are different, then about the only way to change the compression is with different cams. With only one exhaust port, the heads have to be different.
Neither of us knows for sure exactly how the engine is built. I was kind of trying to illustrate that saying it is "the same engine" is probably not true, at least not to any large extent.