Do you think I added too much ignition advance and boost for cast pistons.

It's interesting how they break. Detonation absolutely slams the piston rings into the rings lands. Oops/

Noisy but you don't need to fear that with forgies. Thats more sterile than an operating theatre.

And A huge - I think it was Garret GT35. Had to file part of the volute off to make it fit. It WAS too big. Had to keep it above 5000. But damn when you did ...

These are very special rods. Pauter rods. No H bar 4140 or 4340. Titanium plus bar rods.

Then again I had to pull it all out again. Use multi layer steel headgaskets (shesh tho one use only)