M54 3.0 ltr

Post Sat Feb 28, 2009 10:22 am

Hi,

Regarding the M54 3.0 ltr engine does anybody
know the following please-

The max size overbore on the alloy block/liners ?

Will any other 6 pot TB's bolt directly onto the M54 Head ?

Any other 6 pot Tubular Exhaust manifold bolt directly on ?

Will the S50 B32 6 Speed gearbox bolt straight on or
does it have to be a M54 Manual, from 3/5/7 series ?

ECU will have EWS etc, has anybody had a M54 ECU flashed
or re-chipped ?

Many thanks in advance,

The Gorilla.

Post Sat Feb 28, 2009 9:23 pm

Liners appear to be the same dimensions as the M52

Exhaust studs are the same pattern as M52/M50 but with less studs, inlet is totally different

I dont think gearboxes are an issue, im sure ive tried a 5 and a 6 speed on but dont remember any problems

Post Sun Mar 01, 2009 8:40 am

Isn't the block alu- / nikasil so it has to be coated..?

Just out of interest, why to bore the block?

Post Sun Mar 01, 2009 1:33 pm

Hi,

Jonski- the logic behind it was that the
M54 when replacing the M52 had its stroke
incresed to 89.6mm.

So in wanting to make it rev better, a shorter
stroke would decrease volume, so by increasing
the bore to the max possible, you gain back some
of the lost volume.

Regards,

The Gorilla.