I have an M50b25 non vanos engine in witch I dropped in an M54B30 crank and rods ( bore 84 stroke 89.6 ) That turns the motor to a 3 liter . I would like also turbo this unit so I think that the standard m54 pistons are not siutable because they are not forged and have a compresion ratio of 10.2 :1. I would like to go for 8.5 cr. According to my calculations I can drop the cr to 9.5 with a 3mm mls head gasket , but still to high .
Any ideas !?!?