[bchatt]

My question was of a more technical nature - I am interested in the theory behind the chamber and its (specific) volume.
As for " all designs are a compromise" - I don't see a compromise with having more power down low, at no expense to the rest of the rev range, after all that's what exhuast valves are all about! Simply put, if for example the LTR cover is so much better, why didn't the engine designer come up with it? I'm not bagging, I'm just wondering about the design process.