Mr Aardvark, you definitely have the best port size at 30mm. And 32mm carbs on tapered manifolds will work great, better than 30mm carbs.
If you wanted to improve further, as Comnoz posted in the thread below, you’d be better off using 32mm manifolds and simply putting a small radius at the step where the manifold meets the port.
Knut, This will be done on your rh10. I know exactly how to get there now. Hey Jim, It appears there are at least two norwegians waiting in anticipatuion for a performing head :-) Were you referring to my cylinder head or Kvinnhering's in your recent posting ? Anyway, bottom end rebuild...
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