Quote:
Originally Posted by Luis Lahoz
Can someone please explain to me why BMW insists on the upgrade / rework of the E55 VERY OLD 3.0 engine instead of work on the new and lighter (at least this has been the speech so far...) 4.0 V8?????
Please do not say that the E55 has better mileage... It's a M3 not a 118...
The E46 3.2 M3 engine is by far more Efficient than the E55 3.0. Where is this engine???
Efficient dynamics??? Why don't use the Mini Cooper 1.6 engine with the 184HP in the 1series 118 and 120??? The 1series 2.0 engine really look INEFFICIENT with its 150HP output...
Just some thoughts...
I'm engineer, with a 2002 M3. I don't like the long and very, very heavy E92 M3. I don't like the idea of a turbo small size engine in the new M3/M4. Please forget a new reworked E55...
I do not like to by a Porsche with their fantastic 3.6 / 3.8 NO TURBO wonderful engines... If they improve weigh balance, BMW for sure will have problems.
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The N55 isn't that old. It came out for the 2011 model year I believe.
There are a few reasons why they aren't using the S54 anymore. One is that the is literally nothing left to be done to that engine. BMW got nearly everything that engine has to offer. It was the ultimate iteration of the M52* (which came out in 94) based engines. And the second is that it isn't as efficient (fuel wise) as the N55.
But yeah I do agree with you BMW has taken this efficiency thing a bit too far IMHO.
*Yes I meant M52. The difference between the M52TU and the M54 consists of a slightly different intake manifold shape, a slightly tweaked exhaust manifold, and it switched to an electronic throttle control. So the M54 is very very very similar to the M52.