|BMW S65 engine|
|Valvetrain||DOHC w/ VVT|
The BMW S65 is a naturally aspirated V8 petrol engine which was produced from 2007–2013. Its main use was in the BMW M3 (where it replaced the BMW S54 straight-six engine) and it is the final naturally aspirated V8 engine produced by BMW. There is no direct replacement for the S65, since the following generation of M3 switched to a turbocharged straight-six engine (the BMW S55).
Derived from the BMW S85 V10 engine (as used in the E60 M5), the S65 shares the same basic architecture and aluminium construction. Unlike most other BMW M engines, the S65 and S85 are not related to a regular production BMW engine.
The S65 shares the same cylinder dimensions with the S85 V10, with a 92 mm (3.6 in) bore and a 75.2 mm (3.0 in) stroke. Other common features include individual throttle bodies, ionic current knock sensing, double-VANOS (variable valve timing) and the 12.0:1 compression ratio. The redline is 8,400 rpm.
To reduce weight, a wet-sump lubrication system with two electrically operated scavenging pumps and a main oil pump replaces the three-pump wet-sump system used on the S85. The dry weight of the S65 is 202 kg (445 lb).
The alternator disconnects from the engine during acceleration to maximise power, only charging the battery during braking and decelerating whenever possible, in a system BMW calls Brake Energy Regeneration.
The engine control unit (ECU/DME) is a Siemens MSS60, which is based on the Siemens MSS65 ECU used in the S85 engine The S65 weighs 202 kg (445 lb), which is 15 kg (33 lb) less than its S54 straight-6 engine predecessor.
|S65B40||3,999 cc (244.0 cu in)||309 kW (414 hp)
at 8,300 rpm
|400 N⋅m (295 lb⋅ft)
at 3,900 rpm
|S65B44||4,361 cc (266.1 cu in)||331 kW (444 hp)
at 8,300 rpm
|440 N⋅m (325 lb⋅ft)
at 3,750 rpm
The S65B40 has a bore of 92 mm (3.6 in) and a stroke of 75.2 mm (3.0 in).
The P65 engine is used for motor racing.
- 2008 BMW M3 ALMS
- 2009 BMW M3 GTR racing car
- 2010-2015 BMW Z4 GT3 racing car
- 2013-2016 BMW Z4 GTE racing car
|Wikimedia Commons has media related to BMW S65 engine.|
- "2006 BMW M5 - First Drive Review". www.caranddriver. Retrieved 23 February 2012.
- "Archive". www.ukimediaevents.com. Retrieved 18 August 2017.
- The New BMW M3. BMW Media Information. April 2007. Retrieved 18 August 2017.
- "2010 BMW M3 GTS". www.supercars.net. Retrieved 18 August 2017.
- "Engine specifications for motorsport engines". www.bmwheaven.com. Retrieved 17 August 2017.
- "Bmw M3 V8". www.kenrockwell.com. Archived from the original on 6 May 2007. Retrieved 2007-04-29.
- "S65 oil pressure values". www.m3post.com. Retrieved 18 August 2017.
- "BMW S85 V10 and S65 V8 Engines". www.unixnerd.demon.co.uk. Retrieved 18 August 2017.
- "The new BMW M3" (PDF) (Press release). April 2007. p. 7. Archived from the original (PDF) on 6 October 2007.
- "3' E92 M3 Basic control unit DME / MSS60". www.realoem.com. Retrieved 18 August 2017.
- "BMW S65 engine". www.australiancar.reviews. Retrieved 18 August 2017.
- Aftersales Training - Product Information. E92 M3 Complete vehicle (PDF). BMW Service. July 2007. Retrieved 18 August 2017.
- "The new BMW M3" (PDF). BMW USA. 2007-04-01. Retrieved 2007-04-29.
- "Aftersales Training - Product Information. E92 M3 Complete vehicle" (pdf). www.bimmerfest.com. Retrieved 22 February 2018.
- "FAQ E90 + E92 + E93 M3". www.bmwmregistry.com. Retrieved 15 August 2017.
- "2010 BMW M3 GTS, an AW Flash Drive". www.autoweek.com. Retrieved 15 August 2017.
- "New BMW M3 GTS with a larger 4.4L V8". www.paultan.org. Retrieved 18 June 2011.
- "2012 BMW M3 CRT". www.topspeed.com. Retrieved 15 August 2017.
- "2012 BMW M3 CRT Lightweight Sedan". www.caranddriver.com. Retrieved 15 August 2017.
- "BMW M3 ALMS Racer". www.superstreetonline.com. Retrieved 15 August 2017.
- "Photos: BMW M3 GTR". www.bmwblog.com. Retrieved 15 August 2017.
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