BMW M2 gets the X4 M40i engine, with a few changes

BMW M2 | October 1st, 2015 by 3
BMW X4 M40i official images 1900x1200 85 750x500

The BMW M2 Coupe comes with a 370 hp N55 derivative which continues to rely on a single twin scroll turbocharger and uses S55 components

Earlier this year, we exclusively announced that the new BMW M2 will use the N55 engine which has been revised to include some parts from the S55 powerplant found in the new M3/M4.

BMW unveiled yesterday the X4 M40i, the M Performance Automobile also powered by a revised N55 unit. Looking at the specs, the engine of the BMW X4 M40i is a close relative of the engine for the BMW M2 F87, with the M2 Coupe getting an even sharper power stage with a power rating of 370 hp and improved response.

The basic N55 engine is used in both vehicles with a 3.0 liters of displacement and a twin scroll turbocharger, however, some components from the S55 are included for more stability and to allow an increase of boost pressure and injection quantity. An optimized air intake and an optimized exhaust system are also included.

BMW X4 M40i official images 1900x1200 86 750x500

The torque and power diagram shows the 360-hp N55 variant for the BMW X4 M40i with a rated output at 5,800 and 6,000 rpm/min. We currently estimate that the 370 hp version of the N55 will not provide its rated output in such a wide area, as well as can be expected with a little more torque.

BMW X4 M40i 360 PS N55 Leistungs Drehmoment Diagramm1 576x750

The increase in performance compared to the normally offered 306hp, 320hp or 326 hp base engine is possible because BMW uses some parts from the 431 hp S55 engine. The forged steel crankshaft, the crankshaft bearings and the special pistons and high-power spark plugs will allow an increase in the peak power combined with optimum durability in most sports usage.

Thanks to further improved cooling with a separate oil cooler, the engine of the BMW M2 should also easily handles even the most demanding race tracks, like the Nürburgring Nordschleife. The official presentation of the BMW M2 with all technical details and numerous photographs is scheduled for October 14.

[Source: Bimmertoday]

3 responses to “BMW M2 gets the X4 M40i engine, with a few changes”

  1. The Mann says:

    Its a weird thing, WHY does BMW call the new BMW 340I, it is NOT a 4 liter.. is a 3.0Liter.. so they crap up the number again, the New 225I is a 2.0Liter, the NEW BMW 120I i 1.6Liter .. and all engine today is turbo charged, so that cant be the explanation for that.. Why does the X-model comes with High power M engine, these Crap heavy TANKS has no Road performens at all.. SO WHY. It make no sense at all.. That all should be with Crap Smoking diesel engines for OFF road whatever driving, instate for high performance M-engines also WHY is X-model so poor in offroad performance, they don’t belong in the BMW model program. BMW is stand for high quality and high performance and High driving pleasure, the Crap X-model stands for everything else. Heavy tanks, Heavy weight, ogly, NON performance, NON Offroad performence.

    • Horatiu B. says:

      Things changed, the usual convention doesn’t apply anymore – too many models, too many different engines, etc…You have today one engine with 3-4 different power outputs.

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