[Ashley James]

Cosworth don't forge pistons but use some very advanced casting
techniques, Mahle might do something similar and it's been suggested
that Peter Hepworth's are sourced in Australia. Certainly piston
rings seem to come from new Zealand these days as Britain prices
itself out of the Market.

I reckon your best bet is to speak to Tony Byford as he builds lots of
racing engines and is an extremely nice and helpful chap. I've been
embarrassed by the amount of help he's given me without charging me
for any of it. 01793 740794

Tony prepares Roddy MacPherson's amongst others.

Ashley