Originally Posted by type25

I don't why companies such as cosworth, jun, hks etc claim that their stroker kits increase capacity to 2.2 litres. (79mm stroke, 92 mm bore)

because they don't.

92mm bore x 79 mm stroke = 2.100644 litres.

it is basic maths, not rocket science.


also that lovely light weight crank/semi counter weighted crank shown in the picture attached to the first post is not the crankshaft that you get it the $4900 "stroker kit".
as it says that you get a fully counter weighted crank.
It is most likely that it has a "prepped" standard 2.5 litre crankshaft (they are forged standard)