What differences does it make to the way an engine operates (Its Charcacter??) by having different lower engine dimensions in crank throw, rod length and piston diameter but the same/similar displacement.

Here are a few dimensions for a few popular engines we all know and have an interest in on here.

Cosworth YB.
CT:77mm, RL: 128.5mm, PD: 90.8mm, OC: 1993cc

Zetec E Black Top.
CT: 88mm, RL: 140.8mm, PD: 85.0mm, OC: 1997cc

Zetec E Silver Top.
CT: 88mm, RL: 136.1mm, PD: 85.0mm, OC: 1997cc

Vauxhall XE.
CT: 86mm, RL: 143.1mm, PD: 86.0mm, OC: 1998cc

Mistibushi 4G63.
CT: 88mm, RL: 150.0mm, PD: 85.0mm, OC: 1997cc

Mitsibushi 4G63 Long Rod.
CT: 88mm, RL: 156.0mm, PD: 85.0mm, OC: 1997cc

All above are standard dimension engines bar the 4G63 LR as thats what im currently doing research on for a friend and want to know what difference having the extra 6mm in rod length makes (with the correct pistons to suit. IE location of pin, crown height, skirt length, comp ratio etc) to the engines characteristics.

Hope this will make for an interesting thread.