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|predecessor=None
|predecessor=None
|successor=[[BMW S38]]
|successor=[[BMW S38]]
|related=BMW M49
|configuration= [[Straight-6]]
|configuration= [[Straight-6]]
|bore={{cvt|93.4|mm|in|1}}
|bore={{cvt|93.4|mm|in|1}}
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|displacement={{convert|3453|cc|L|1|abbr=on|order=flip}}
|displacement={{convert|3453|cc|L|1|abbr=on|order=flip}}
|valvetrain= [[DOHC]] (M88) <br/> [[SOHC]] (M30B35LE/M90)
|valvetrain= [[DOHC]] (M88) <br/> [[SOHC]] (M30B35LE/M90)
|fueltype=[[Petrol engine|Petrol]]
|fueltype=[[Petrol]]
|head=[[Aluminium]]
|head=[[Aluminium]]
|block=[[Cast iron]]
|block=[[Cast iron]]
}}
}}


The [[BMW]] '''M88''' is a straight-6 DOHC petrol engine which was produced from 1978-1989. It is based on the DOHC version of the BMW M49 engine, which was used in the [[BMW E9|BMW 3.0CSi]] racing cars.<ref name="gtspirit.com">{{cite web |title=The Story of 40 Years BMW M ‒ The BMW M1 |url=http://gtspirit.com/2012/06/01/the-story-of-40-years-bmw-m-%e2%80%92-the-bmw-m1/ |website=gtspirit.com |access-date=13 December 2018}}</ref><ref name="mydriftfun.com">{{cite web |title=Top 5 Great BMW Engines |url=https://mydriftfun.com/top-5-great-bmw-engines/ |website=mydriftfun.com |access-date=13 December 2018 |date=11 May 2017 |archive-url=http://web.archive.org/web/20181215222126/https://mydriftfun.com/top-5-great-bmw-engines/ |archive-date=15 December 2018}}</ref><ref>{{cite web|url=https://infernalco.co/2018/03/20/m-divisions-greatest-competition-engines/ |title=M Division’s Greatest Competition Engines – Infernal Combustion |publisher=Infernalco.co |date=20 March 2018 |accessdate=31 May 2021}}</ref>
The [[BMW]] '''M88''' is a [[Straight-six engine|straight-6]] [[DOHC]] [[petrol engine]] which was produced from 1978 to 1989. It is based on the DOHC version of the BMW M49 engine, which was used in the [[BMW E9|BMW 3.0CSi]] racing cars.<ref name="gtspirit.com">{{cite web |title=The Story of 40 Years BMW M ‒ The BMW M1 |url=http://gtspirit.com/2012/06/01/the-story-of-40-years-bmw-m-%e2%80%92-the-bmw-m1/ |website=gtspirit.com |access-date=13 December 2018}}</ref><ref name="mydriftfun.com">{{cite web |title=Top 5 Great BMW Engines |url=https://mydriftfun.com/top-5-great-bmw-engines/ |website=mydriftfun.com |access-date=13 December 2018 |date=11 May 2017 |archive-url=https://web.archive.org/web/20181215222126/https://mydriftfun.com/top-5-great-bmw-engines/ |archive-date=15 December 2018}}</ref><ref>{{cite web|url=https://infernalco.co/2018/03/20/m-divisions-greatest-competition-engines/ |title=M Division's Greatest Competition Engines – Infernal Combustion |publisher=Infernalco.co |date=20 March 2018 |accessdate=31 May 2021}}</ref>


The M88 was produced alongside the [[BMW M30]] engine, as the higher performance engine. In North America up until 1989, the [[BMW S38]] engine was used instead of the M88. In 1989, an updated version of the S38 became the worldwide replacement for the M88. The M30B35LE is a [[SOHC]] engine which is based on the M88/1; this is sometimes referred to as the M90.
The M88 was produced alongside the [[BMW M30]] engine, as the higher performance engine. In North America up until 1989, the [[BMW S38]] engine was used instead of the M88. In 1989, an updated version of the S38 became the worldwide replacement for the M88. The M30B35LE is a [[SOHC]] engine which is based on the M88/1; this is sometimes referred to as the M90.


==Design==
==Design==
BMW engineers used [[Overhead camshaft#Dual overhead camshaft|DOHC]] valvetrain on a production engine for the first time on the M88, with the [[camshaft]]s driven by a single-row [[timing chain]].<ref>{{cite web|author=Horatiu Boeriu |url=http://www.bmwblog.com/2012/05/24/chris-harris-drives-the-e28-bmw-m5/ |title=Chris Harris Drives the E28 BMW M5 |publisher=Bmwblog.com |date=24 May 2012 |accessdate=31 May 2021}}</ref> [[Kugelfischer]] fuel injection<ref name=projectM1 /> was used with individual [[throttle]] valves<ref>{{cite web|url=http://www.bimmerforums.com/engine_faq.php |title=Engine FAQ |publisher=Bimmerforums.com |date=23 August 2009 |accessdate=31 May 2021}}</ref> and the distinctive six [[Throttle body|individual throttle bodies]].
BMW engineers used a [[Overhead camshaft#Dual overhead camshaft|DOHC]] valvetrain on a production engine for the first time on the M88, with the [[camshaft]]s driven by a single-row [[timing chain]].<ref>{{cite web|author=Horatiu Boeriu |url=http://www.bmwblog.com/2012/05/24/chris-harris-drives-the-e28-bmw-m5/ |title=Chris Harris Drives the E28 BMW M5 |publisher=Bmwblog.com |date=24 May 2012 |accessdate=31 May 2021}}</ref> [[Kugelfischer]] fuel injection<ref name=projectM1 /> was used with individual [[throttle]] valves<ref>{{cite web|url=http://www.bimmerforums.com/engine_faq.php |title=Engine FAQ |publisher=Bimmerforums.com |date=23 August 2009 |accessdate=31 May 2021}}</ref> and the distinctive six [[Throttle body|individual throttle bodies]].


The construction is an aluminium [[cylinder head]] and a cast iron [[Cylinder block|block]].<ref>{{cite web |title=1984 BMW 745i E23 5-Speed manual M88 engined SA model road test |url=https://drive-my.com/en/blogs/entry/1984-bmw-745i-e23-5-speed-manual-m88-engined-sa-model-road-test.html |website=drive-my.com |access-date=2 December 2018 |language=en-gb}}</ref><ref>{{cite web |title=BMW M88 and S38 M-Tech 24 Valve Six Cylinder Engines |url=http://www.unixnerd.demon.co.uk/s38.html |website=unixnerd.demon.co.uk |access-date=2 December 2018}}</ref> The [[bore (engine)|bore]] is {{convert|93.4|mm|in|2|abbr=on}} and the [[stroke (engine)|stroke]] is {{convert|84.0|mm|in|2|abbr=on}}, resulting in a [[Engine displacement|displacement]] of {{convert|3453|cc|cuin|1|abbr=on}}.
The construction is an aluminium [[cylinder head]] and a cast iron [[Cylinder block|block]].<ref>{{cite web |title=1984 BMW 745i E23 5-Speed manual M88 engined SA model road test |url=https://drive-my.com/en/blogs/entry/1984-bmw-745i-e23-5-speed-manual-m88-engined-sa-model-road-test.html |website=drive-my.com |date=16 March 2016 |access-date=2 December 2018 |language=en-gb}}</ref><ref>{{cite web |title=BMW M88 and S38 M-Tech 24 Valve Six Cylinder Engines |url=http://www.unixnerd.demon.co.uk/s38.html |website=unixnerd.demon.co.uk |access-date=2 December 2018}}</ref> The [[bore (engine)|bore]] is {{convert|93.4|mm|in|2|abbr=on}} and the [[stroke (engine)|stroke]] is {{convert|84.0|mm|in|2|abbr=on}}, resulting in a [[Engine displacement|displacement]] of {{convert|3453|cc|cuin|1|abbr=on}}.


==Versions==
==Versions==
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|{{cvt|470|PS|kW PS hp|0|order=out}} <br/> at 9,000&nbsp;rpm || {{convert|390|Nm|lbft|0|abbr=on}} <br/> at 7,000&nbsp;rpm || 1979-1980 || Gr.4 Procar
|{{cvt|470|PS|kW PS hp|0|order=out}} <br/> at 9,000&nbsp;rpm || {{convert|390|Nm|lbft|0|abbr=on}} <br/> at 7,000&nbsp;rpm || 1979-1980 || Gr.4 Procar
|-
|-
|M88/2<ref>{{Cite web|url=https://www.automobilsport-magazin.de/en/back-issues/issue/articles/issue-07.html|title=Issue #07}}</ref><ref>{{Cite web|url=https://www.bmw-motorsport.com/en/topics/magazine-article-pool/bmw-turbo-engine-evolution.html|title = From M121 to P48: An overview of the evolution of BMW Turbo engines in motor racing}}</ref>
|M88/2
|up to {{cvt|850|PS|kW PS hp|0|order=out}} <br/> at 9,000&nbsp;rpm || || 1979-1981 || Gr. 5 turbo
|up to {{cvt|850-1000|PS|kW PS hp|0|order=out}} <br/> at 9,000&nbsp;rpm || {{convert|847-1017|Nm|lbft|0|abbr=on}} at 7,000&nbsp;rpm<ref>{{Cite web|url=https://spicerparts.com/calculators/horsepower-torque-calculator|title = Spicer Horsepower and Torque Calculator}}</ref> || 1979-1981 || Gr. 5 turbo
|-
|-
|M88/3
|M88/3
|{{cvt|286|PS|kW PS hp|0|order=out}} <br/> at 6,500&nbsp;rpm || {{convert|340|Nm|lbft|0|abbr=on}} <br/> at 4,500&nbsp;rpm || 1983–1989 || M635 CSi, M5, 745i (South Africa only)
|{{cvt|286|PS|kW PS hp|0|order=out}} <br/> at 6,500&nbsp;rpm || {{convert|340|Nm|lbft|0|abbr=on}} <br/> at 4,500&nbsp;rpm || 1983–1989 || M635 CSi, M5, 745i (South Africa only)
|-
|-
|M30B35LE
|M30B35LE/M90
|{{cvt|218|PS|kW PS hp|0|order=out}} <br/> at 5,200&nbsp;rpm || {{convert|304|Nm|lbft|0|abbr=on}} <br/> at 4,000&nbsp;rpm ||1978–1982 || SOHC
|{{cvt|218|PS|kW PS hp|0|order=out}} <br/> at 5,200&nbsp;rpm || {{convert|304|Nm|lbft|0|abbr=on}} <br/> at 4,000&nbsp;rpm ||1978–1982 || SOHC
|}
|}
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===M88===
===M88===
[[File:BMW M1 Ausstellungsmotor.jpg|thumb|M88/1 with some parts replaced with Plexiglas for display purposes]]
[[File:BMW M1 Ausstellungsmotor.jpg|thumb|M88/1 with some parts replaced with Plexiglas for display purposes]]
The M88 was the original iteration of the engine and was fitted to the [[BMW M1]]. It produces {{cvt|277|PS|kW PS hp|0|order=out}} at 6,500&nbsp;rpm and {{convert|330|Nm|0|abbr=on}} at 5,500&nbsp;rpm. A [[dry sump]] is used.<ref>{{cite web|title=The BMW Six Cylinder Guide|url=http://www.autospeed.com/cms/article.html?&title=The-BMW-Six-Cylinder-Guide&A=2948|website=autospeed.com}}</ref>
The M88 was the original iteration of the engine and was fitted to the [[BMW M1]]. It produces {{cvt|277|PS|kW hp}} at 6,500&nbsp;rpm and {{cvt|330|Nm|lbft}} at 5,500&nbsp;rpm. A [[dry sump]] is used.<ref>{{cite web|title=The BMW Six Cylinder Guide|url=http://www.autospeed.com/cms/article.html?&title=The-BMW-Six-Cylinder-Guide&A=2948|website=autospeed.com}}</ref>


Applications:
Applications:
Line 60: Line 59:


===M88/1===
===M88/1===
For the BMW M1 [[BMW M1 Procar Championship|Procar]] single-make series, the M88 engine was bored out marginally to reach {{convert|3498|cc|L|1|abbr=on}}. This racing version, called the '''M88/1''', met the [[Group 4 (racing)|Group 4]] regulations. This race engine produced {{convert|470|PS|kW hp|abbr=on}} in Procar specifications. This version had forged pistons, sharper camshafts, bigger valves, as well as oil cooling for the transmission and rear differential.
For the BMW M1 [[BMW M1 Procar Championship|Procar]] single-make series, the M88 engine was bored out marginally to reach {{convert|3498|cc|L|1|abbr=on}}. This racing version, called the '''M88/1''', met the [[Group 4 (racing)|Group 4]] regulations. This race engine produced {{cvt|350|kW|PS hp}} in Procar specifications. This version had forged pistons, sharper camshafts, bigger valves, as well as oil cooling for the transmission and rear differential.


Applications:
Applications:
Line 66: Line 65:


===M88/2===
===M88/2===
For Group 5 racing, the M88 engine was turbocharged and became known as the M88/2. It was downsleeved and had a shorter stroke to displace {{convert|3191|cc|L|1|abbr=on}}, which with the 1.4 turbo factor placed it in the 4.5-liter class. This race engine produced up to {{convert|900|hp|kW|abbr=on|order=flip}}.<ref name=carlust>{{cite web |url=http://www.carlustblog.com/2012/05/bmw-m1.html |title=Archived copy |access-date=15 August 2012 |url-status=dead |archive-url=https://web.archive.org/web/20120713005747/http://www.carlustblog.com/2012/05/bmw-m1.html |archive-date=13 July 2012 }}</ref>
For Group 5 racing, the M88 engine was turbocharged and became known as the M88/2. It was downsleeved and had a shorter stroke to displace {{convert|3191|cc|L|1|abbr=on}}, which with the 1.4 turbo factor placed it in the 4.5-liter class. This race engine produced up to {{cvt|670|kW|PS hp}}.<ref name=carlust>{{cite web |url=http://www.carlustblog.com/2012/05/bmw-m1.html |title=Car Lust: BMW M1 |access-date=15 August 2012 |url-status=dead |archive-url=https://web.archive.org/web/20120713005747/http://www.carlustblog.com/2012/05/bmw-m1.html |archive-date=13 July 2012 }}</ref>


Applications:
Applications:
* [[Group 5 (racing)|Group 5]] racing cars
* [[Group 5 (racing)|Group 5]] racing cars ([[BMW M1 (Group 5)|BMW M1 Group 5 page]])


===M88/3===
===M88/3===
[[File:BMW_M88_3_Auspuffseite.JPG|thumb|M88/3 iteration used in the [[BMW M6#E24 M635CSi/M6 (1983–1989)|E24 M635CSi]] and [[BMW M5#E28|E28 M5]].]]
[[File:BMW_M88_3_Auspuffseite.JPG|thumb|M88/3 iteration used in the [[BMW M6#E24 M635CSi/M6 (1983–1989)|E24 M635CSi]] and [[BMW M5#E28|E28 M5]].]]
The M88/1 engine was modified for use in the [[BMW M6#E24 M635CSi/M6 (1983–1989)|E24 M635CSi]] and [[BMW M5#E28|E28 M5]] and was known as the M88/3.<ref>{{cite web |url=http://www.usautoparts.net/bmw/models/m_series_history.htm |title=Archived copy |access-date=15 August 2012 |url-status=dead |archive-url=https://web.archive.org/web/20131023232703/http://www.usautoparts.net/bmw/models/m_series_history.htm |archive-date=23 October 2013 }}</ref> The [[Kugelfischer]] [[fuel injection]] was replaced with [[Robert Bosch GmbH|Bosch]] [[Motronic]] producing {{Convert|210|kW|PS hp|0|abbr=on}} at 6,500&nbsp;rpm and {{Convert|340|Nm|0|abbr=on}} at 4,500&nbsp;rpm.<ref>{{cite web|url=http://www.bmwmregistry.com/model_faq.php?id=5 |title=FAQ E24 M635CSi + M6 |publisher=BMW M Registry |accessdate=31 May 2021}}</ref> It has a [[compression ratio]] of 10.5:1.
The M88/1 engine was modified for use in the [[BMW M6#E24 M635CSi/M6 (1983–1989)|E24 M635CSi]] and [[BMW M5#E28|E28 M5]] and was known as the M88/3.<ref>{{cite web |url=http://www.usautoparts.net/bmw/models/m_series_history.htm |title=BMW World - BMW M Parts Series |access-date=15 August 2012 |url-status=dead |archive-url=https://web.archive.org/web/20131023232703/http://www.usautoparts.net/bmw/models/m_series_history.htm |archive-date=23 October 2013 }}</ref> The [[Kugelfischer]] [[fuel injection]] was replaced with [[Robert Bosch GmbH|Bosch]] [[Motronic]] producing {{cvt|210|kW|PS hp}} at 6,500&nbsp;rpm and {{cvt|340|Nm|lbft}} at 4,500&nbsp;rpm.<ref>{{cite web|url=http://www.bmwmregistry.com/model_faq.php?id=5 |title=FAQ E24 M635CSi + M6 |publisher=BMW M Registry |accessdate=31 May 2021}}</ref> It has a [[compression ratio]] of 10.5:1.


The M88/3 was also fitted to the South African BMW 745i, due to packaging problems with the turbocharged [[BMW M102|M102]] engine which was used in other markets.<ref>{{cite web|url=http://www.bmwmregistry.com/model_faq.php?id=4 |title=FAQ E23 745i SA (M88) |publisher=BMW M Registry |accessdate=31 May 2021}}</ref>
The M88/3 was also fitted to the South African BMW 745i, due to packaging problems with the turbocharged [[BMW M102|M102]] engine which was used in other markets.<ref>{{cite web|url=http://www.bmwmregistry.com/model_faq.php?id=4 |title=FAQ E23 745i SA (M88) |publisher=BMW M Registry |accessdate=31 May 2021}}</ref>
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* 1984-1987 [[BMW 7 Series (E23)|E23]] 745i (South Africa only)
* 1984-1987 [[BMW 7 Series (E23)|E23]] 745i (South Africa only)


=={{anchor|M90|M30B35|SOHC}} M30B35==
=={{anchor|M90|M30B35|SOHC}} M30B35LE==
The '''M30B35LE''' is a lower performance, two-valve, [[SOHC]] version of the M88/1 engine, also known as the '''M90'''. It utilizes the same block as the M88 and maintains the same bore and stroke, but borrows its head from the [[BMW M30]] engine family. Different years of this engine uses both Bosch [[Motronic]] and Bosch [[L-Jetronic]] engine management systems.<ref name=projectM1>{{cite web|url=http://www.projectm1.com/index_files/Technology.htm |title=M1 Technology |publisher=Projectm1.com |accessdate=31 May 2021}}</ref>
The '''M30B35LE''' is a lower performance, two-valve, [[SOHC]] version of the M88/1 engine, also known as the '''M90'''. It utilizes the same block as the M88 and maintains the same bore and stroke, but borrows its head from the [[BMW M30]] engine family. Depending on year, this engine uses either Bosch [[Motronic]] or Bosch [[L-Jetronic]] as its engine management system.<ref name=projectM1>{{cite web|url=http://www.projectm1.com/index_files/Technology.htm |title=M1 Technology |publisher=Projectm1.com |accessdate=31 May 2021}}</ref>
Typically identified by a white L painted on the block behind the oil filter housing and coolant water passages on the side of the block.
Typically identified by a white L painted on the block behind the oil filter housing and coolant water passages on the side of the block.


As sold in Europe and most other markets (except North America), this used a compression ratio of 9.3:1, did not have a [[catalytic converter]] and produced {{cvt|160|kW|PS hp|0}}.
As sold in Europe and most other markets (except North America), this engine used a compression ratio of 9.3:1, did not have a [[catalytic converter]], and produced {{cvt|160|kW|PS hp}}.


Applications:
Applications:
Line 100: Line 99:


{{BMW automotive petrol engines: 1960s to 1980s}}
{{BMW automotive petrol engines: 1960s to 1980s}}

{{DEFAULTSORT:Bmw M88}}
{{DEFAULTSORT:Bmw M88}}
[[Category:BMW engines|M88]]
[[Category:BMW engines|M88]]
[[Category:World Sportscar Championship engines]]
[[Category:World Sportscar Championship engines]]
[[Category:Inline-six engines]]
[[Category:Straight-six engines]]
[[Category:Gasoline engines by model]]
[[Category:Gasoline engines by model]]

Latest revision as of 00:46, 15 December 2024

BMW M88 engine
Overview
ManufacturerBMW
Also called
  • BMW M30B35LE
  • BMW M90
Production1978–1989
Layout
ConfigurationStraight-6
Displacement3.5 L (3,453 cc)
Cylinder bore93.4 mm (3.7 in)
Piston stroke84 mm (3.3 in)
Cylinder block materialCast iron
Cylinder head materialAluminium
ValvetrainDOHC (M88)
SOHC (M30B35LE/M90)
Combustion
Fuel typePetrol
Chronology
PredecessorNone
SuccessorBMW S38

The BMW M88 is a straight-6 DOHC petrol engine which was produced from 1978 to 1989. It is based on the DOHC version of the BMW M49 engine, which was used in the BMW 3.0CSi racing cars.[1][2][3]

The M88 was produced alongside the BMW M30 engine, as the higher performance engine. In North America up until 1989, the BMW S38 engine was used instead of the M88. In 1989, an updated version of the S38 became the worldwide replacement for the M88. The M30B35LE is a SOHC engine which is based on the M88/1; this is sometimes referred to as the M90.

Design

[edit]

BMW engineers used a DOHC valvetrain on a production engine for the first time on the M88, with the camshafts driven by a single-row timing chain.[4] Kugelfischer fuel injection[5] was used with individual throttle valves[6] and the distinctive six individual throttle bodies.

The construction is an aluminium cylinder head and a cast iron block.[7][8] The bore is 93.4 mm (3.68 in) and the stroke is 84.0 mm (3.31 in), resulting in a displacement of 3,453 cc (210.7 cu in).

Versions

[edit]
Engine code Power Torque Years Note
M88 204 kW (277 PS; 273 hp)
at 6,500 rpm		 330 N⋅m (243 lb⋅ft)
at 5,000 rpm		 1978-1981 BMW M1
M88/1 346 kW (470 PS; 464 hp)
at 9,000 rpm		 390 N⋅m (288 lb⋅ft)
at 7,000 rpm		 1979-1980 Gr.4 Procar
M88/2[9][10] up to 625–735 kW (850–1,000 PS; 838–986 hp)
at 9,000 rpm		 847–1,017 N⋅m (625–750 lb⋅ft) at 7,000 rpm[11] 1979-1981 Gr. 5 turbo
M88/3 210 kW (286 PS; 282 hp)
at 6,500 rpm		 340 N⋅m (251 lb⋅ft)
at 4,500 rpm		 1983–1989 M635 CSi, M5, 745i (South Africa only)
M30B35LE/M90 160 kW (218 PS; 215 hp)
at 5,200 rpm		 304 N⋅m (224 lb⋅ft)
at 4,000 rpm		 1978–1982 SOHC

M88

[edit]
M88/1 with some parts replaced with Plexiglas for display purposes

The M88 was the original iteration of the engine and was fitted to the BMW M1. It produces 277 PS (204 kW; 273 hp) at 6,500 rpm and 330 N⋅m (240 lb⋅ft) at 5,500 rpm. A dry sump is used.[12]

Applications:

  • 1978-1981 M1

M88/1

[edit]

For the BMW M1 Procar single-make series, the M88 engine was bored out marginally to reach 3,498 cc (3.5 L). This racing version, called the M88/1, met the Group 4 regulations. This race engine produced 350 kW (480 PS; 470 hp) in Procar specifications. This version had forged pistons, sharper camshafts, bigger valves, as well as oil cooling for the transmission and rear differential.

Applications:

M88/2

[edit]

For Group 5 racing, the M88 engine was turbocharged and became known as the M88/2. It was downsleeved and had a shorter stroke to displace 3,191 cc (3.2 L), which with the 1.4 turbo factor placed it in the 4.5-liter class. This race engine produced up to 670 kW (910 PS; 900 hp).[13]

Applications:

M88/3

[edit]
M88/3 iteration used in the E24 M635CSi and E28 M5.

The M88/1 engine was modified for use in the E24 M635CSi and E28 M5 and was known as the M88/3.[14] The Kugelfischer fuel injection was replaced with Bosch Motronic producing 210 kW (290 PS; 280 hp) at 6,500 rpm and 340 N⋅m (250 lb⋅ft) at 4,500 rpm.[15] It has a compression ratio of 10.5:1.

The M88/3 was also fitted to the South African BMW 745i, due to packaging problems with the turbocharged M102 engine which was used in other markets.[16]

Applications:

  • 1983-1989 E24 M635CSi
  • 1984-1987 E28 M5
  • 1984-1987 E23 745i (South Africa only)

M30B35LE

[edit]

The M30B35LE is a lower performance, two-valve, SOHC version of the M88/1 engine, also known as the M90. It utilizes the same block as the M88 and maintains the same bore and stroke, but borrows its head from the BMW M30 engine family. Depending on year, this engine uses either Bosch Motronic or Bosch L-Jetronic as its engine management system.[5] Typically identified by a white L painted on the block behind the oil filter housing and coolant water passages on the side of the block.

As sold in Europe and most other markets (except North America), this engine used a compression ratio of 9.3:1, did not have a catalytic converter, and produced 160 kW (220 PS; 210 hp).

Applications:

See also

[edit]
  • BMW S14 - Four-cylinder engine based on the M88

References

[edit]
  1. ^ "The Story of 40 Years BMW M ‒ The BMW M1". gtspirit.com. Retrieved 13 December 2018.
  2. ^ "Top 5 Great BMW Engines". mydriftfun.com. 11 May 2017. Archived from the original on 15 December 2018. Retrieved 13 December 2018.
  3. ^ "M Division's Greatest Competition Engines – Infernal Combustion". Infernalco.co. 20 March 2018. Retrieved 31 May 2021.
  4. ^ Horatiu Boeriu (24 May 2012). "Chris Harris Drives the E28 BMW M5". Bmwblog.com. Retrieved 31 May 2021.
  5. ^ a b "M1 Technology". Projectm1.com. Retrieved 31 May 2021.
  6. ^ "Engine FAQ". Bimmerforums.com. 23 August 2009. Retrieved 31 May 2021.
  7. ^ "1984 BMW 745i E23 5-Speed manual M88 engined SA model road test". drive-my.com. 16 March 2016. Retrieved 2 December 2018.
  8. ^ "BMW M88 and S38 M-Tech 24 Valve Six Cylinder Engines". unixnerd.demon.co.uk. Retrieved 2 December 2018.
  9. ^ "Issue #07".
  10. ^ "From M121 to P48: An overview of the evolution of BMW Turbo engines in motor racing".
  11. ^ "Spicer Horsepower and Torque Calculator".
  12. ^ "The BMW Six Cylinder Guide". autospeed.com.
  13. ^ "Car Lust: BMW M1". Archived from the original on 13 July 2012. Retrieved 15 August 2012.
  14. ^ "BMW World - BMW M Parts Series". Archived from the original on 23 October 2013. Retrieved 15 August 2012.
  15. ^ "FAQ E24 M635CSi + M6". BMW M Registry. Retrieved 31 May 2021.
  16. ^ "FAQ E23 745i SA (M88)". BMW M Registry. Retrieved 31 May 2021.
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