Carburettor(s) : Twin SU HS2 (32mm / 1.25inch)
Engine type : A series (Mini/Metro/Midget/Minor)
Capacity : 1275cc
Gearbox type : A/A+ series 4 speed transverse gearbox (Mini/Metro etc)
Wheels/tyres : 12inch + 165/60R12
Engine details...
Air filter : K&N cone or similar
Inlet : Fully gas flowed alloy inlet
Cylinder head : 1275cc head (standard)
Camshaft : Standard
Rockers : Standard
Exhaust system : LCB + Medium bore (1-2inch) twin-box
Ignition system : Modified distributor with fast road advance curve (eg: Aldon Yellow)
Cooling system : Standard metal or plastic mechanical fan
Gearbox details...
Gearbox type : Standard A+ helical
Transfer gears : Standard helical
Final drive : 2.75:1 final drive
Needles to try...
M8 4.2% too rich top end, 32.4% too rich mid range
HB 0.8% too rich top end, 37.4% too rich mid range
D9 2.5% too rich top end, 36.0% too rich mid range
ADN 5.6% too rich top end, 36.0% too rich mid range
ABL 2.0% too rich top end, 41.0% too rich mid range
ABM 7.3% too rich top end, 35.8% too rich mid range
M7 6.4% too rich top end, 37.2% too rich mid range
M9 6.4% too rich top end, 37.2% too rich mid range
ABU 8.1% too rich top end, 37.7% too rich mid range
AAP 7.3% too rich top end, 39.6% too rich mid range
Recommended carb(s) : Single 1.75" (HS6/HIF44) or Twin 1.25" (HS2)
www.mintylamb.co.uk/suneedle/ will allow you to graphically compare needle profiles.
