Well Glen it was talking with you that got me started on this road so when I find out I'll let you know!
Have only exchanged a few emails with the guy so far and only repeating what has been said.
And no I havent checked the maths, its not part of the brief I gave him. I am only interested in the final power output, how that is achieved I have no interest in.
That may change in further discussions as bhp maybe reduced to achieve more torque.
Nothing is certain yet or set in stone, I'll let you know how things progress.
Len, the only thing that sounds alarm bells with me, is that someone is telling you that you can get something that nobody else has been able to get!
So maybe he doesn't know the VW engines so well?
If he does have a way of getting 2.3 I'd love to know...because I know a 95.5mm crank catches (I have one!) so a 100mm crank certainly will...and with a 100mm crank and 83.5mm pistons you only get 2.2.
So he's either mistaken...or he's maybe looking at bespoke offset ground cranks, one off rods and pistons...and a mortgage to build the engine.
A 2.1 can be built reasonably cheaply...
A 2.2 less so.
A 2.3 reliably? Hmm...