S5x - Revision history

Grrrmachine at 08:27, 8 March 2013

2013-03-08T08:27:13Z

Grrrmachine at 21:05, 25 February 2013

2013-02-25T21:05:42Z

Grrrmachine at 20:48, 25 February 2013

2013-02-25T20:48:46Z

Grrrmachine at 20:47, 25 February 2013

2013-02-25T20:47:49Z

Grrrmachine at 20:45, 25 February 2013

2013-02-25T20:45:03Z

Grrrmachine at 20:30, 25 February 2013

2013-02-25T20:30:43Z

Grrrmachine at 20:29, 25 February 2013

2013-02-25T20:29:43Z

Grrrmachine at 18:12, 25 February 2013

2013-02-25T18:12:05Z

Grrrmachine at 12:01, 25 February 2013

2013-02-25T12:01:24Z

Grrrmachine: New page: The BMW '''S5x''' range of engines are a line of 6-cylinder engines, fitted to BMW Motorsport models between 1992 and 2001. The range is comprised of two main units; the [[MSx#S50|S50...

2013-02-25T09:50:06Z

New page: The BMW '''S5x''' range of engines are a line of 6-cylinder engines, fitted to BMW Motorsport models between 1992 and 2001. The range is comprised of two main units; the [[MSx#S50|S50...

New page

The [[BMW]] '''S5x''' range of engines are a line of 6-cylinder engines, fitted to BMW Motorsport models between 1992 and 2001. The range is comprised of two main units; the [[MSx#S50|S50]] and the [[S5x#S52|S52]]. All S5x engines are fundamentally based on the [[M5x]] series of engines that powered the [[E34]] M5 and [[E36]] M3, and are therefore very popular [[Engine_Swaps|engine swaps]].
__TOC__

=Versions=

==S50==

The S50 engine first saw action under the bonnet of the [[E34]] and [[E36]] as the 3.0 variant, before being enlarged to 3.2 in 1995. These phenomenal engines were complete rebuilds of [[M50]] engines; the blocks had a wider bore, the crank had a longer stroke and the whole compression was raised to 11.8:1. Compared to the simple 24V head of the M50, these engines featured Double [M5x#VANOS|VANOS]] technology and independent throttle bodies (six in all) to guarantee

S50 engines weigh '''138kg'''

{| class=wikitable
!Engine
!Displacement
!Power
!Torque
!Redline
!Bore
!Stroke
!Year
|-
|S50B30
|3.0 L (2990 cc/182 in³)
|210 kW (282 hp) @ 7000
|320 N·m (236 ft·lbf) @ 3600
|7200
|86mm
|86mm
|1992
|-
|S50B32
|3.2 L (3201 cc/195 in³)
|236 kW (321 hp) @ 7400
|350 N·m (258 ft·lbf) @ 3250
|7600
|86.4mm
|91mm
|1995
|-
|}

==S50US==

Unfortunately for the US market, the phenomenal performance of the S50 engine came at too high a cost, both in dollars and pollution. To import such an engine and tune it to meet stringent emissions regulations would put a standard M3 far above the price bracket at which it was marketed.

Rather than rebuilding the S50, BMW adapted the existing [[M50]] design to offer a tuned engine that performance half way between. Power and torque output are significantly decreased in contrast to the "original" S50, but are a massive improvement on the M5x design. At 240hp, the S50B30US slots neatly between the M50B25 at 191hp, and the S50B30 at 282hp.

After letting the [[M5x#M50|M50]] prove itself, BMW released a Technical Update for the engine in September 1992, announcing the new engine as the '''M50TU'''. These units featured an even more complex head design incorporating [[M5x#VANOS|VANOS]] technology; a variable-valve timing system that modifies the position of the intake [[M5x#Cam|camshaft]]. This has no effect on the overall power of the engine, but does improve torque at lower revs.

Because of this increased complexity, VANOS engines are best avoided for first-time engine swappers.

{| class=wikitable
!Engine
!Displacement
!Power
!Torque
!Redline
!Bore
!Stroke
!Year
|-
|S50B30US
|3.0 L (2990 cc/182 in³)
|177 kW (241 hp) @ 6000
|305 N·m (225 ft·lbf) @ 4250
|6500
|86mm
|86mm
|1993
|-
|}

==S52==

Despite being heavily based on the M50, the M52 was a whole new engine, and it feels it. 20kg slimmer and a lot more responsive at the pedal, these engines are the most desirable of the M5x swaps.

S52 engines weigh '''118kg'''

{| class=wikitable
!Engine
!Displacement
!Power
!Torque
!Redline
!Bore
!Stroke
!Year
|-
|S52B20
|2.0 L (1990 cc/121 in³)
|110 kW (148 hp) @ 5900
|190 N·m (140 ft·lbf) @ 4700
|6500
|80mm
|66mm
|1994
|-
|S52B25
|2.5 L (2494 cc/152 in³)
|123 kW (170 hp) @ 5500
|245 N·m (181 ft·lbf) @ 3950
|6500
|84mm
|75mm
|1995
|-
|S52B28
|2.8 L (2793 cc/170 in³)
|142 kW (193 hp) @ 5300
|280 N·m (207 ft·lbf) @ 3950
|6500
|84mm
|84mm
|1995
|-
|}

==S52TU==

Another Technical Update came in 1998, affecting all the M52 engines with a system called Double-VANOS, which applied the existing VANOS technology to the exhaust camshaft as well. Alongside that, the Block of the engine was changed from cast iron to aluminium, and the engine management system was upgraded. Unfortunately, all this complexity somehow robbed the M52 of its charm, and these Double-VANOS units are best avoided.

{| class=wikitable
!Engine
!Displacement
!Power
!Torque
!Redline
!Bore
!Stroke
!Year
|-
|S52TUB20
|2.0 L (1990 cc/121 in³)
|110 kW (148 hp) @ 5900
|190 N·m (140 ft·lbf) @ 3500
|6500
|80mm
|66mm
|1998
|-
|S52TUB25
|2.5 L (2494 cc/152 in³)
|123 kW (170 hp) @ 5500
|245 N·m (181 ft·lbf) @ 3500
|6500
|84mm
|75mm
|1998
|-
|S52TUB28
|2.8 L (2793 cc/170 in³)
|142 kW (193 hp) @ 5500
|280 N·m (207 ft·lbf) @ 3500
|6500
|84mm
|84mm
|1998
|-
|}

@@ Line 1: / Line 1: @@
 [[Image:S50.jpg|right|250px]]
-The [[BMW]] '''S5x''' range of engines are a line of  6-cylinder engines, fitted to BMW Motorsport models between 1992 and 2001. The range is comprised of three main units; the [[S5x#S50|S50]], the [[S5x#S52|S52]] and the [[S5x#S54|S54]]. All S5x engines are fundamentally based on the [[M5x]] series of engines that powered the [[E34]] M5 and [[E36]] M3, and are one of the most powerful (and challenging) [[Engine_Swaps|engine swaps]].
+The [[BMW]] '''S5x''' range of engines are a line of  6-cylinder engines, fitted to BMW [[Motorsport]] models between 1992 and 2001. The range is comprised of three main units; the [[S5x#S50|S50]], the [[S5x#S52|S52]] and the [[S5x#S54|S54]]. All S5x engines are fundamentally based on the [[M5x]] series of engines that powered the [[E34]] M5 and [[E36]] M3, and are one of the most powerful (and challenging) [[Engine_Swaps|engine swaps]].
 A lot of confusion exists online due to BMW's idea of releasing two different engines called the S50; one for the US and one for the rest of the world. Hopefully this will clear a few things up.

@@ Line 1: / Line 1: @@
 [[Image:S50.jpg|right|250px]]
-The [[BMW]] '''S5x''' range of engines are a line of  6-cylinder engines, fitted to BMW Motorsport models between 1992 and 2001. The range is comprised of three main units; the [[S5x#S50|S50]], the [[S5x#S52|S52]] and the [[S5x#S54|S54]]. All S5x engines are fundamentally based on the [[M5x]] series of engines that powered the [[E34]] M5 and [[E36]] M3, and are therefore very popular [[Engine_Swaps|engine swaps]].
+The [[BMW]] '''S5x''' range of engines are a line of  6-cylinder engines, fitted to BMW Motorsport models between 1992 and 2001. The range is comprised of three main units; the [[S5x#S50|S50]], the [[S5x#S52|S52]] and the [[S5x#S54|S54]]. All S5x engines are fundamentally based on the [[M5x]] series of engines that powered the [[E34]] M5 and [[E36]] M3, and are one of the most powerful (and challenging) [[Engine_Swaps|engine swaps]].
 A lot of confusion exists online due to BMW's idea of releasing two different engines called the S50; one for the US and one for the rest of the world. Hopefully this will clear a few things up.

@@ Line 103: / Line 103: @@
 ==S54==
-Eventually all this nonsense about Euro v US engines was sorted out with the introduction of the S54. By returning to the original [[M50]] design, BMW were able to use the 3.2 litre design to eke out a massive 343hp, with only the smallest dilution down to 333hp for the US market.
+Eventually all this nonsense about Euro v US engines was sorted out with the introduction of the S54. By returning to the original [[M50]] design, BMW were able to use the full potential of the 3.2 litre displacement to eke out a massive 343hp, with only the smallest dilution down to 333hp for the US market.
 These engines increased the bore of the original [[S5x#S50|S30B32]] even further and raised compression to 11.5:1, in order to squeeze every last pony from the design. The success of the experiment was seen with the launch of the [[E46]] M3 in 2001. A detuned version was fitted to the [[Z3]] M versions, presumably limited to stop it tearing the car apart, before returning to full-fat flavour for the Z4. A special 355hp variant was produced exclusively for the 2004 E46 M3 CSL.

@@ Line 75: / Line 75: @@
 ==S52==
-Rather than develop the S50 further, in 1996 BMW adopted the S52 unit for the American market. Because of that, they are based on the iron block the US used, rather than the lighter aluminium version used in Europe.
+Rather than develop their S50 further, in 1996 BMW adopted the S52 unit for the American market, which is based on the existing [[M52]] engine. Because of that, they have the iron block the US used for those motors, rather than the lighter aluminium version used in Europe.
 These engines were bored out similar to the [[S5x#S50|S30B32]], but retained the power output of the original S50US engine of 240hp. However, the increased stroke of the engine increased the maximum torque while flattening the torque curve, meaning you get more from the engine at lower revs.

@@ Line 1: / Line 1: @@
 [[Image:S50.jpg|right|250px]]
 The [[BMW]] '''S5x''' range of engines are a line of  6-cylinder engines, fitted to BMW Motorsport models between 1992 and 2001. The range is comprised of three main units; the [[S5x#S50|S50]], the [[S5x#S52|S52]] and the [[S5x#S54|S54]]. All S5x engines are fundamentally based on the [[M5x]] series of engines that powered the [[E34]] M5 and [[E36]] M3, and are therefore very popular [[Engine_Swaps|engine swaps]].
 __TOC__
 =Versions=

←Older revision		Revision as of 20:30, 25 February 2013
Line 1:		Line 1:
		+	[[Image:S50.jpg\|right\|250px]]
	The [[BMW]] '''S5x''' range of engines are a line of 6-cylinder engines, fitted to BMW Motorsport models between 1992 and 2001. The range is comprised of three main units; the [[S5x#S50\|S50]], the [[S5x#S52\|S52]] and the [[S5x#S54\|S54]]. All S5x engines are fundamentally based on the [[M5x]] series of engines that powered the [[E34]] M5 and [[E36]] M3, and are therefore very popular [[Engine_Swaps\|engine swaps]].		The [[BMW]] '''S5x''' range of engines are a line of 6-cylinder engines, fitted to BMW Motorsport models between 1992 and 2001. The range is comprised of three main units; the [[S5x#S50\|S50]], the [[S5x#S52\|S52]] and the [[S5x#S54\|S54]]. All S5x engines are fundamentally based on the [[M5x]] series of engines that powered the [[E34]] M5 and [[E36]] M3, and are therefore very popular [[Engine_Swaps\|engine swaps]].
	__TOC__		__TOC__

@@ Line 1: / Line 1: @@
-The [[BMW]] '''S5x''' range of engines are a line of  6-cylinder engines, fitted to BMW Motorsport models between 1992 and 2001. The range is comprised of two main units; the [[S5x#S50|S50]] and the [[S5x#S52|S52]]. All S5x engines are fundamentally based on the [[M5x]] series of engines that powered the [[E34]] M5 and [[E36]] M3, and are therefore very popular [[Engine_Swaps|engine swaps]].
+The [[BMW]] '''S5x''' range of engines are a line of  6-cylinder engines, fitted to BMW Motorsport models between 1992 and 2001. The range is comprised of three main units; the [[S5x#S50|S50]], the [[S5x#S52|S52]] and the [[S5x#S54|S54]]. All S5x engines are fundamentally based on the [[M5x]] series of engines that powered the [[E34]] M5 and [[E36]] M3, and are therefore very popular [[Engine_Swaps|engine swaps]].
 __TOC__
 =Versions=
@@ Line 5: / Line 5: @@
 ==S50==
-The S50 engine first saw action under the bonnet of the [[E36]] M3 as a 3.0 engine. These phenomenal units were complete rebuilds of [[M50]] engines; the blocks had a wider bore, the crank had a longer stroke and the whole compression was raised to 10.8:1. Compared to the simple 24V head of the M50, these engines featured [[VANOS]] technology and independent throttle bodies (six in all) for improved top-end performance.
+The S50 engine first saw action under the bonnet of the [[E36]] M3 as a 3.0 engine. These phenomenal units were complete rebuilds of the iron-block [[M50]] engines; the blocks had a wider bore, the crank had a longer stroke and the whole compression was raised to 10.8:1. Compared to the simple 24V head of the M50, these engines featured [[VANOS]] technology and independent throttle bodies (six in all) for improved top-end performance.
-In 1995 they went through an upgrade, with an increased bore and stroke taking displacement to 3.2 litres. To cope this this, the heads were fitted with [[VANOS#Double_VANOS|Double VANOS]] to regulate both the intake and exhaust valves. Continuing to serve duty in the E36, these bigger lumps were also stuffed into the [[Z3]] M-Coupe.
+In 1995 they went through an upgrade, with an increased bore and stroke taking displacement to 3.2 litres. To cope this this, the heads were fitted with [[VANOS#Double_VANOS|Double VANOS]] to regulate both the intake and exhaust valves, and a second oil pump fitted. Seeing active duty in the E36, these bigger lumps were also stuffed into the [[Z3]] M Coupe and Roadster.
 S50 engines weigh '''151kg'''
@@ Line 72: / Line 72: @@
 ==S52==
-Despite being heavily based on the M50, the M52 was a whole new engine, and it feels it. 20kg slimmer and a lot more responsive at the pedal, these engines are the most desirable of the M5x swaps.
+Rather than develop the S50 further, in 1996 BMW adopted the S52 unit for the American market. Because of that, they are based on the iron block the US used, rather than the lighter aluminium version used in Europe.
-S52 engines weigh '''118kg'''
+These engines were bored out similar to the [[S5x#S50|S30B32]], but retained the power output of the original S50US engine of 240hp. However, the increased stroke of the engine increased the maximum torque while flattening the torque curve, meaning you get more from the engine at lower revs.
 {| class=wikitable
@@ Line 86: / Line 88: @@
 !Year
 |-
-|S52B20
+|S52B32
-|2.0&nbsp;L (1990&nbsp;cc/121&nbsp;in³)
+|3.2&nbsp;L (3192&nbsp;cc/195&nbsp;in³)
-|110&nbsp;kW (148&nbsp;hp) @ 5900
+|177&nbsp;kW (241&nbsp;hp) @ 6000
-|190&nbsp;N·m (140&nbsp;ft·lbf) @ 4700
+|320&nbsp;N·m (236&nbsp;ft·lbf) @ 3800
 |6500
-|80mm
+|86.4mm
-|66mm
+|89.6mm
-|1994
+|1996
 |}
-==S52TU==
+==S54==
-Another Technical Update came in 1998, affecting all the M52 engines with a system called Double-VANOS, which applied the existing VANOS technology to the exhaust camshaft as well. Alongside that, the Block of the engine was changed from cast iron to aluminium, and the engine management system was upgraded. Unfortunately, all this complexity somehow robbed the M52 of its charm, and these Double-VANOS units are best avoided.
+Eventually all this nonsense about Euro v US engines was sorted out with the introduction of the S54. By returning to the original [[M50]] design, BMW were able to use the 3.2 litre design to eke out a massive 343hp, with only the smallest dilution down to 333hp for the US market.
 {| class=wikitable
@@ Line 129: / Line 116: @@
 !Year
 |-
-|S52TUB20
+|S54B32
-|2.0&nbsp;L (1990&nbsp;cc/121&nbsp;in³)
+|3.2&nbsp;L (3246&nbsp;cc/198&nbsp;in³)
-|110&nbsp;kW (148&nbsp;hp) @ 5900
+|256&nbsp;kW (343&nbsp;hp) @ 7900
-|190&nbsp;N·m (140&nbsp;ft·lbf) @ 3500
+|365&nbsp;N·m (269&nbsp;ft·lbf) @ 4900
-|6500
+|8000
-|80mm
+|87mm
-|66mm
+|91mm
-|1998
+|2001
 |-
 |}

@@ Line 1: / Line 1: @@
 The [[BMW]] '''S5x''' range of engines are a line of  6-cylinder engines, fitted to BMW Motorsport models between 1992 and 2001. The range is comprised of two main units; the [[MSx#S50|S50]] and the [[S5x#S52|S52]]. All S5x engines are fundamentally based on the [[M5x]] series of engines that powered the [[E34]] M5 and [[E36]] M3, and are therefore very popular [[Engine_Swaps|engine swaps]].
 __TOC__
 =Versions=
 ==S50==
-The S50 engine first saw action under the bonnet of the [[E34]] and [[E36]] as the 3.0 variant, before being enlarged to 3.2 in 1995. These phenomenal engines were complete rebuilds of [[M50]] engines; the blocks had a wider bore, the crank had a longer stroke and the whole compression was raised to 11.8:1. Compared to the simple 24V head of the M50, these engines featured Double [M5x#VANOS|VANOS]] technology and independent throttle bodies (six in all) to guarantee
+The S50 engine first saw action under the bonnet of the [[E34]] and [[E36]] as a 3.0 engine. These phenomenal units were complete rebuilds of [[M50]] engines; the blocks had a wider bore, the crank had a longer stroke and the whole compression was raised to 11.8:1. Compared to the simple 24V head of the M50, these engines featured Double [M5x#VANOS|VANOS]] technology and independent throttle bodies (six in all) for improved top-end performance.
 S50 engines weigh '''138kg'''
@@ Line 65: / Line 66: @@
 |305&nbsp;N·m (225&nbsp;ft·lbf) @ 4250
 |6500
 |86mm
-|86mm
+|1994
 |-
 |}