Engines: Difference between revisions

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== Engines ==
The E28 was the first 5 Series produced with diesel engines (the 524d and 524td models) and with a petrol model specifically aimed at increased fuel economy (525e/528e model).


The four models available at the launch of the E28 were the 518, 520i, 525i and 528i. With the 518 using a straight-four petrol engine and the other three models using a straight-six petrol engine. Over the course of the E28 model, the following models were added: the 524d and 524td using diesel engines, the 518i (a fuel-injected version of the 518), the 525e/528e as fuel-economy models, and the upper-specification 533i, 535i, M535i, and M5 models.
== Engine FAQs ==
{| class="wikitable"
|-
! FAQ
! Covers
|-
| [[M30 Cooling System Bleeding]]
| Bleed an M30 (also works on M20)
|-
| [[M30 Valve Adjustment]]
| M30 valve lash / eccentric adjustment
|-
| [[TDC Mark on the Harmonic Balancer]]
| Verify the TDC mark
|-
| [[M30 Flywheel]]
| M30 flywheel types and swap notes
|-
| [[M30 Starter Removal]]
| Tip for dropping the M30 starter
|-
| [[M30 Engine Rebuild Tips & FAQ]]
| M30 rebuild notes
|-
| [[AFM vs MAF]]
| E28s use an AFM, not a MAF
|-
| [[Spark Plug FAQ]]
| Which spark plugs to use
|-
| [[M20 - e2i Conversion]]
| M20B27 eta-to-i conversion
|-
| [[Gas Leak Under the Intake Manifold]]
| Cold-start injector / fuel leak under intake
|-
| [[Fuel Smell After Filling the Tank]]
| Overflow / charcoal canister / filler neck
|-
| [[Running Issues Below a Quarter Tank]]
| Fuel pickup / sender issues when low
|}


A liquid petroleum gas (LPG) option was introduced for some petrol engines in 1984.
See also the [https://forums.mye28.com/viewtopic.php?t=60306 M30B35 Swap] forum FAQ.
 
The BMW E28, produced from 1981 to 1988, was the second generation of the 5 Series and featured a wide range of engines tailored to different markets worldwide.
 
=== Summary by Region ===
 
* '''Europe''': Full range, including low-displacement economy models like the 518 and 518i, as well as high-performance models like the M535i and M5.
* '''North America''': Emphasis on larger engines like the 528e, 533i, 535i, and the M5, with stricter emissions requirements reducing power output.
* '''South Africa''': Unique combinations like the S38-powered M5 and the 518 with the M10 engine.
* '''Other Regions''': A mix of economy models and mid-range offerings like the 520i and 528i, depending on local demand and taxation rules.
 
== Petrol Engines ==
 
=== 4-Cylinder Petrol Engines ===
 
==== M10 Series ====
 
* '''M10B18''' (518):
** 1766cc, SOHC, carbureted.
** Power: 90 hp (66 kW).
** Markets: Europe and other regions with an emphasis on economy.
* '''M10B18 LE-Jetronic''' (518i):
** 1766cc, SOHC, fuel-injected.
** Power: 105 hp (77 kW).
** Markets: Europe.
 
----
 
=== 6-Cylinder Petrol Engines ===
 
==== M20 Series ====
 
* '''M20B20''' (520i):
** 1991cc, SOHC, fuel-injected.
** Power: 125 hp (93 kW).
** Markets: Europe.
* '''M20B27''' (525e/528e):
** 2693cc, SOHC, low-revving, economy-focused.
** Power: 121–129 hp (90–95 kW).
** Markets: North America, Europe, and other regions.
 
==== M30 Series ====
 
* '''M30B28''' (528i):
** 2788cc, SOHC, fuel-injected.
** Power: 181 hp (135 kW).
** Markets: Europe and other global markets.
* '''M30B30''' (530i):
** 2986cc, SOHC, fuel-injected.
** Power: 177 hp (132 kW).
** Markets: North America (1981–1982 models only).
* '''M30B32''' (533i):
** 3210cc, SOHC, fuel-injected.
** Power: 181 hp (135 kW).
** Markets: North America (1983–1984).
* '''M30B34''' (535i, 535is):
** 3430cc, SOHC, fuel-injected.
** Power: 182–218 hp (135–162 kW) depending on market and emissions equipment.
** Markets: North America, Europe, and other regions.
 
==== M88/S38 High-Performance Engines ====
 
* '''M88/3''' (M5):
** 3453cc, DOHC, individual throttle bodies.
** Power: 286 hp (210 kW).
** Markets: Europe.
* '''S38B35''' (M5):
** 3453cc, DOHC, individual throttle bodies.
** Power: 256 hp (191 kW).
** Markets: North America, South Africa.
 
== Diesel Engines ==
 
=== 6-Cylinder Diesel Engines (M21 Series) ===
 
==== M21D24 ====
 
* '''Turbocharged''':
** Displacement: 2443cc, SOHC.
** Power: 113 hp (83 kW).
** Models: 524td.
** Markets: North America, Europe, South Africa.
* '''Naturally Aspirated''':
** Displacement: 2443cc, SOHC.
** Power: 86 hp (63 kW).
** Models: 524d.
** Markets: Europe


== E28 Engine Swaps ==
== E28 Engine Swaps ==
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See [[M20 - e2i Conversion]].
See [[M20 - e2i Conversion]].


== E28 Engine Information ==
[[Category:E28 Information]]
[[Category:E28 Information]]
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