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Old 01-01-2018, 11:28 PM   #35
Mr Gazza
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Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,963
M900ie uses V2 heads too, but I have been told by someone who should know, that the late ie V2 heads are different to the early carb V2 heads.
I forget the specific difference. It's either slightly smaller valves in the ie or maybe less cam lift... What he actually said was that the valves on the later V2 heads miss each other by a lot more than on the early ones.
I don't know if the above is true, but I can tell you that my 2000 M900ie has an awful lot more poke than my '98 M900, which presumably had the "W" heads?

If you're going to tune it, my advice would be to stick an ie lump in it.
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