M20 Engine Specs

Ver el tema anterior Ver el tema siguiente Ir abajo

M20 Engine Specs

Mensaje  JL Engineering el Miér Jul 22, 2009 8:27 pm

M20B25:

1987-1991 325i/is/ix/ic (1992 for cabrio)
inline 6 w/ monotronic 1.3(after 89) or 1.1 ecu, SOHC belt driven
12 valves two per cyl., multiport fuel injection

head casting number: 1-705-885 spanish casting "AMC"

displacment: 2.5l, 2494cc

power: 168hp @ 5800rpms 164lbs tq @4300rpms/ 171hp noncat version

redline: 6500 rpms

weight: 175kg

comprestion ratio: 8.8:1 (US 87-90) 9.7:1 (euro spec 85-89)

idle speed: 760 +/- 40 rpms

Piston comp height: 34.2 mm / 1.346 in

firing order: 1-5-3-6-2-4

intake valve size: 42mm

exhaust vavle size: 36mm

valve clearance: .30mm/.012" cold .25mm/.01" hot

valve seat angle: 45 degrees

bore and stroke: 3.31" x 2.95"

rod length: 135mm

piston bore: .858"

Piston dish: 6.2mm

cam duration: 256 deg

valve lift: 10.1mm

cam LCA: 108 deg

cam bearings: 7

cam end play: .008"

cam duration: 256 degrees

oil presure @ idle: 18psi

intake runner length: 360mm

Throttle body inlet: 65mm

throtle body butterfly: 60mm

Throttle body outlet: 63mm





M20B27:
1984-1988 325/e/es
SOHC 12 valve two valves/ cyl. Inline 6 Cylinder BOSCH Motronic 1.0(84-87) Motronic 1.1 (88)
super eta introduced for one year in 1988

head casting number: 1-705-200 and 1-705-885 (super eta '88 only see notes)

displacement: 2.7l 2693cc

HP:122 @ 4250 / 127 @ 4800 (super eta)

TQ: 170 @ 3200

idle speed: 700 +/- 50

red line: 4750rpms

firing order: 1 - 5 - 3 - 6 - 2 - 4

Bore: 84 mm / 3.311 in

Stroke: 81 mm / 3.189 in

Compression ratio: 9.0:1 (82-87), 8.5:1 (super ETA 87-88)

Rod length: 130 mm / 5.118 in

Rod big end bore: 45 mm / 1.772 in

Crank rod journal: 21.8 mm / .858 in

Piston comp height: 35.7 mm / 1.406 in (82-87), 36.2 mm / 1.425 in (super ETA 87-88)

Piston Dome/Dish: 3.5mm

Int valve dia: 40mm

Ex valve dia: 34mm

valve clearance: .30mm cold/ .25mm hot

Cam shaft duration: 236 deg (belt driven)

valve lift: 9.1mm

cam LCA: 102 deg

cam bearings: 4

intake runner length: 550mm

throttle body inlet: 55mm

Throttle body butterfly: 48mm

Throttle body outlet: 54mm


Nota: Este motor al tener "springs" de valvulas sencillo y con valvulas 1mm mas pequenas, previene que este motor gire a mas de 4500 rpm stock. Este motor fue creado con fines de economizar gasolina. Es conocido como el "eta". El motor "super eta" tiene los mismos "springs" sencillos y valvulas , y utiliza el "camshaft" de eta.




M20B20:
1986-1991 320i
SOHC 12 Valve Inline 6 Cylinder

displacment: 2.0l 1990cc

HP: 125 @ 5800, 129 @ 6000 (Motronic)

TQ: 170 Nm @ 4000, 174 Nm @ 4000 rpm (Motronic)

Bore: 80 mm / 3.149 in

Stroke: 66 mm / 2.598 in

Compression ratio: 9.8:1

firing order: 1 - 5 - 3 - 6 - 2 - 4

Rod length: 130 mm / 5.118 in

Rod big end bore: 45 mm / 1.772 in

Crank rod journal: 21.8 mm / .858 in

Piston comp height:

Piston Dome/Dish:

Int valve dia:

Ex valve dia:

Cam shaft Specs:

throttle body inlet: 55mm

Throttle body butterfly: 48mm

Throttle body outlet: 54mm


Nota: Del M20B20 fue derivado toda la linea de motores M20 los cuales fueron los primeros motores en un e30. Este motor tiene su peak power mas alto que ningun otro M20.




M20B23:
1982-1986 323i
SOHC 12 Valve Inline 6 Cylinder

head casting number: 1-705-731

displacement: 2.3l 2315cc

HP: 139 @ 5800 (83-84) 150 @ 6000 (>85)

TQ: 205 Nm @ 4000

Bore: 80 mm / 3.149 in

Stroke: 76.8 mm / 3.024 in

Compression ratio: 9.8:1

Firing order: 1 - 5 - 3 - 6 - 2 - 4

Rod length: 130 mm / 5.118 in

Rod big end bore: 45 mm / 1.772 in

Crank rod journal: 21.8 mm / .858 in

Int valve dia: 40mm

Ex valve dia: 36mm

Cam shaft Specs: duration 264 deg

cam bearings: 7

Timing @ 0.012in (0.30mm) (advertised duration, like the above cams).

Duration: 260'

Cam Bearings: 7

LSA: 110'

Cam Lift: 6.58mm

Inlet Opens: 11' BTDC

Inlet Closes: 58' ATDC

Exhaust Opens: 62' BTDC

Exhaust Closes: 18' ATDC

Valve seat angle: 44' 30-20

throttle body inlet: 55mm

Throttle body butterfly: 48mm

Throttle body outlet: 54mm



Notas: Esta tapa es comúnmente utilizada con un bloque de "eta" para aumentar el flujo y el top end. Esta tapa utiliza "springs" doble de válvula y un palo mas alto que el "eta".



M20 varation
M21 Diesel Diesel & Turbo Diesel - 1987-1991 - touring 1988-1992
SOHC 12 Valve 2443 2.4l Inline 6 cylinder

HP: 86 @ 4600 (d) 115 @ 4800 (td)
TQ: 112 @ 2500 (d) 162 @ 2400 (td)
Bore: 80 mm / 3.149 in
Stroke: 81 mm / 3.189 in
Compression ratio: 22.0:1
Rod big end bore: 45 mm / 1.772 in
Crank rod journal: 21.8 mm / .858 in
Cam shaft Specs:
Timing @ 0.012in (0.30mm) (advertised duration, like the above cams).
Duration: 260'
Cam Bearings: 7
LSA: 110'
Cam Lift: 6.58mm
Inlet Opens: 11' BTDC
Inlet Closes: 58' ATDC
Exhaust Opens: 62' BTDC
Exhaust Closes: 18' ATDC
Valve seat angle: 44' 30-20


notes: Este motor m20 diesel trae un cigue~al forjado en vez the cast. Estos cigue~ales son populares para conversiones "strokers" y Turbo.

Cualquier Info que deseen a~adir, me la dicen y corregimos el post. Thanks.

JL Engineering
Chofer
Chofer

Cantidad de envíos : 31
Fecha de inscripción : 05/07/2009

Ver perfil de usuario

Volver arriba Ir abajo

Ver el tema anterior Ver el tema siguiente Volver arriba

- Temas similares

 
Permisos de este foro:
No puedes responder a temas en este foro.