The M88.1 engine was modified for use in the M635CSi and E28 M5, this engine was known as the M88/3.3 The Kugelfisher fuel injection was replaced with Bosch Motronic and the engine produced 286 hp (213 kW). The M88.3 was also fitted to the South African 745i, due to packaging problems with the turbocharged M102 engine which was used in other markets.
ON the S38 side there were also 3 versions:
The S38 was an updated M88/3 and produced in three versions :
(1) S38 B35 - US-spec BMW M5 (E28) and E24 BMW M6 and late-production catalyst-equipped European market M635CSi (260 DIN HP).
(2) S38 B36 - all US-spec and '89-'92 European-spec BMW M5 (E34)
(3) S38 B38 - '92-'96 European-spec BMW M5 (E34)
The S38 B35 was a revision of M88/3 with dual-row timing chain, reduced compression, catalyst-equipped and fitted with tubular exhaust manifolds rather than equal length "bundle of snakes" headers.
For the S38 B36 displacement was enlarged from 3453 to 3535 cc. Thanks to the use of a Bosch Motronic 1.2 engine management, power grew to 315 PS (232 kW/310 SAE hp) at 6900 rpm. a dual-stage intake plenum helped to improve flexibility over the rev range. All versions were catalyst-equipped.
In 1992, with the introduction of Euro I emission legislation, BMW opted to enlarge the engine once more, to 3795 cc, with power climbing to 340 PS (250 kW/335 SAE hp) and torque going up to 400 Nm (295 ft·lbf). Coil-on-plug ignition replaced the traditional distributor from the B35 & B36. The B38 engine also received a Motronic 1.3 engine management. This engine was used in the M5 until the E34 finished production in 1996. [1]
ON the S38 side there were also 3 versions:
The S38 was an updated M88/3 and produced in three versions :
(1) S38 B35 - US-spec BMW M5 (E28) and E24 BMW M6 and late-production catalyst-equipped European market M635CSi (260 DIN HP).
(2) S38 B36 - all US-spec and '89-'92 European-spec BMW M5 (E34)
(3) S38 B38 - '92-'96 European-spec BMW M5 (E34)
The S38 B35 was a revision of M88/3 with dual-row timing chain, reduced compression, catalyst-equipped and fitted with tubular exhaust manifolds rather than equal length "bundle of snakes" headers.
For the S38 B36 displacement was enlarged from 3453 to 3535 cc. Thanks to the use of a Bosch Motronic 1.2 engine management, power grew to 315 PS (232 kW/310 SAE hp) at 6900 rpm. a dual-stage intake plenum helped to improve flexibility over the rev range. All versions were catalyst-equipped.
In 1992, with the introduction of Euro I emission legislation, BMW opted to enlarge the engine once more, to 3795 cc, with power climbing to 340 PS (250 kW/335 SAE hp) and torque going up to 400 Nm (295 ft·lbf). Coil-on-plug ignition replaced the traditional distributor from the B35 & B36. The B38 engine also received a Motronic 1.3 engine management. This engine was used in the M5 until the E34 finished production in 1996. [1]
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3453cc M88/3 engine in M635 CSi [1] |
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Source: [1] http://en.wikipedia.org/wiki/BMW_M88#M88.2F1
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