Motor 99H

Ist ein ganz normaler 1000er A+ Motor

Da gibt´s zwei tolle Tabellen, um die unterschiedlichsten Motoren zu identifizieren.

Diese hier ist für Metro Motoren .

Und diese hier für Mini Motoren .

Gruß, Diddi

Jepp ist ein metro Motor !
mehr dazu :



1st prefix group identifies engine capacity -
85 = 850cc (mainly used in export only models)
99 = 998cc
12 = 1275cc
1st prefix letter identifies engine orientation -
H = Transverse

2nd prefix group identifies gearbox, ancillary and specific engine type -
prefix number identifies general engine installation details (i.e. '907')
prefix letter identifies emissions equipment type (i.e. 'P')


3rd prefix group identifies compression ratio and serial number
prefix letter denotes compression ratio -
H = High compression
L = Low compression

Prefix number is engine serial number (i.e. 101, 102, etc.)



2nd prefix number combination references
897 - Yd + Bf + Hm + Zj +Sk
898 - Yd + Bf + Hm + Zj + Tj
907 - Yd + Bf + Hm + Sk
908 - Yd + Bf + Hm + Tj
929 - Yd + Bf + Hm + Dn + Sk
951 - Yd + Bf + Hm + Zj + Dn + Sk
955 - Yd + Bf + Hm + Nl + Sk
958 - Yd + Bf + Hm + Nn + Sk
959 - Gd + Bf + Hm + Fp + Sk
962 - Yd + Bf + Hm + Hf + Sk
963 - Yd + Bf + Hm + Hf + Zj + Sk
977 - Yd + Bf + Hm + Xc + Jn + Sk
978 - Yd + Bf + Hm + Xc + Dn + Sk
996 - Yd + Bf + Yn + Sk
A02 - Yd + Bf + Hm + Nn + Sk
A05 - Yd + Bf + Hm + Hf + Zj + Kp + Sk
A06 - Yd + Bf + Hm + Kp + Sk
A07 - Yd + Bf + Hm + Zj + Lp + Sk
A08 - Yd + Bf + Hm + Lp + Sk
A09 - Yd + Bf + Hm + Nl + Lp + Sk
A47 - Yd + Bf + Hm + Vn + Sk



2nd prefix letter reference details
Bf - Alternator with negative earth
Dn - Base line engine with single outlet exhaust manifold
Fp - Metro high performance derivative (meant to identify high compression, sportier than
original and initial standard cam and can include MG Metro specification derivatives)
Gp - High pressure electric fuel pump (therefore MG Metro Turbo)
Hf - 1st alternative compression ratio (should be 9.7-1CR as used in early pre 1983 range)
Hm - LC8 design variant (probably means the 'Low Compression' A+ derivative of the A-series
engine - as in '&' denotes a Mini engine)
Jn - 1980 requirements (probably closed circuit breathing and lean-running)
Kp - 3.65 Final Drive fitted to gearbox
Lp - 3.105 Final Drive fitted to gearbox
Nl - Hot climate specification (usually more conservative ignition advance curve in dizzy,
different thermostat and different fuelling, i.e. carb needle)
Nn - Alternative compression ratio (should be 9.75-1CR as used in post 1983 general range)
Sk - Standard ratio gearbox with 3.44 Final Drive, inboard CV joints and rod change
Tj - Automatic gearbox fitment
Vr - Post Office spec - i.e. low compression and low final drive
Yc - Police spec - i.e. high compression, probably MG cam and up-rated diff pin
Yd - Mechanical fuel pump
Yn - MG Metro design/specification variants (high CR, sportier CAM6648 cam, bigger inlet
valve in head) also known to be fitted to LHD Van Den Plas
Zj - Cold country spec (more advanced advance curve in dizzy, different thermostat and so on)
  

2nd prefix letter data
AA - Carburetter crankcase ventilation and intake air temperature control
P - Carburetter crankcase and clean air package


Example;

99H963P
99 - 998cc
 H - Transverse
963 - Yd + Bf + Hm + HF+ZJ+ Sk
Yd - Mechanical fuel pump
  Bf - Alternator with negative earth
  Hm - LC8 variant - A+ Metro engine
 Hf - 1st alternative compression ratio (should be 9.7-1CR as used in early pre 1983 range)
 Zj - Cold country spec (more advanced advance curve in dizzy, different thermostat and so on)
  Sk - Standard gearbox ratios with 3.44 final drive, inboard CV joints, rod change
P - Carburetter crankcase and clean air package
 H - High compression