(...) la rampe de 748r qui elle a subi un alésage
chez qui ?
We ended up using the std pistons and custom 1.2mm base gaskets (although Bruce Meyers later told me he just uses two 0.6mm base gaskets) instead of the Ferraci pistons.
As it was finally assembled, with the std pistons, 900 crank and 1.2mm base gaskets it had 0.90mm squish and 12.75:1 compression.