Hey D dont know if you remember but I posted some drawings of A series valve deshrouding based on some study of modified mini heads that I used the same principles and aplied to a series.

The bigest problem being that our a series head were allready much closer to the modified mini heads and there was little gain to be made without resesing valves witch then compromised port angle




edit: allso in the serch for allround power in the smaller capacities hase anyone ever 'filled' a GX head, were buy filling in the port on the bottom and raising it roof as high as posible creating a far mor gradual turn into the head? this might allso help with being able to reasess valves and regringing an optimum chamber?

edit edit: allso 'Tubeing' could be quite benificial especialy with the use of motobike carbs or fule injection. and I think it just about allways gets put in the to hard basket but they have all sorts of industrial vacume apoxi sealers these days that would make welding les crucial? just a thought..