Production and testing of the V8 4.4 liter Twin-Scroll from BMW X5M

Videos | September 25th, 2010 by 5
p90045751 image 1600x12001 750x500 Production and testing of the V8 4.4 liter Twin Scroll from BMW X5M

In 2009, BMW unveiled their first M car powered by a turbocharged engine. The twins BMW X5M and X6M launched into the market in a …

In 2009, BMW unveiled their first M car powered by a turbocharged engine. The twins BMW X5M and X6M launched into the market in a moment less favorable for a vehicle of their caliber, both from a pricing perspective and fuel efficiency.

The M SAV twins came equipped with the latest engine coming from M Division: a V8 4.4 liter twin-scroll engine delivering 555 horsepower at 6,000 rpm and 500 lb-ft of torque from 1,500 to 5,650 rpm. The engine was developed under the internal code S63.

The engine uses the twin-scroll twin turbo technology with High Precision Direct Injection. By positioning the twin-scroll turbochargers together with the catalytic converters in the “V” section between the cylinders, it minimizes the turbo lag and offers better fuel efficiency.

p90045751 image 1600x12001 655x494 Production and testing of the V8 4.4 liter Twin Scroll from BMW X5M

A video released by BMW gives us more insight into the production and testing of this new powerplant, so let’s have a look.

Current Spec for X5/6M:
Cylinders/valves 8/4
Capacity in ccm 4395 / Biturbo
Stroke/bore in mm 88.3/89.0
Max. output in kW/bhp at 1/min 408 (555)/6000
Max. torque in Nm at 1/min 680/3400

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