i have a 2001 m54 2.5 engine that i plan to rebuild with a turbo in the workings. i really want to get the ball rolling and send the head ( warped at the mo ) and block (the block is tip top) off to be machined, but it appears that i really need a definitive plan in regards to the components
i am going to use in the engine ( what sort of power increase can stock bmw internals handle? ) before i can do anything, because of valve seat cutting etc. i want to end up with approx 450 rwhp ( is this realistic for not a daily drive, but a regular use, reliable dose of fun ),
which calls for a substantial turbo and ancilliries.
so my thoughts at the moment are a blur of cams, pistons, valves etc and i seem to be gettting nowhere!
has someone allready put together a similar engine with sucsess? what worked? how scary was the overall build cost? your help would be most appreciated.
is the twin vanos an advantage or not? i've read mixed views.