marvin wroteThere's no reason to get ST4S cases if you are going to use 916 size pistons. The only reason to get the St4S cases is if you want to make a 996 size engine. Your S4/916 barrels won't fit up to the ST4S cases anyway.
I think I was too busy with my mind elsewhere as I wrote that comment. Reading it back it didn't make much sense. I wont be changing cases now. It was more of a case if If I was spending money on 955 barrels, pistons and crank case machining I would be better off starting with the st4s cases and fitting what i have in there and selling the 916 top end. It seems that the larger capacity 998 is cheaper for pistons and cylinders.
I am too far in now! I am hoping to be finished with anything fiddly by the end of summer. I just want a good reliable motor that I can use frequently that is nice and grunty and I do not have to rev it much.
