Using high mileage block as base for turbo engine.
Turbo Mini Forums

i am currently looking at 2 engine,
one is 40k ish mileage, that i know well.
other one is 64k mileage block which is on my new mini which had it (valve dropped i think by previous owner)
they are both similar age. 1 year difference between them.

They will get overbore to 1293cc. i suspect higher mileage block is better as the heat cycling has been done many times therfore stronger and stiffer block as metal has 'settled'????

like those BMW F1 team did many years ago. take out 1500cc high mileage block, leave outside in rain, then take it in for machine work. started life as 120bhp? to 1500bhp turbo monster.

so am I talking nonsense?

You'll not notice one blind bit of difference.
I doubt you'll be producing around 1500hp....

How do you know that the 64K milage block has done more heat cycles? It probably has, but you'll never know.

And don't forget about them pissing on it as well!!! On a completely different matter, through work i am going to meet one of the best car/race car designers that the world has ever known, Mr. Gordon Murray!! The famous designer of the car with the pissed on engine, Brabham bt52 and Mclaren F1!!

AlexF