David Links don't work
Crank Numbers Thanks Hot Bricks Website
Cranks
Crankshaft I.D. chart (casting or stamped numbers)
22A62/62 Early 850 with oil feed for primary gear, 1.375" tail 850cc
22A298 Early 850 thin nose crank, 1.375" diameter tail 850cc
12A670 850 crank with 1.5" diameter tail 850cc
12A298 997cc
12A375 Oil feed hole for primary gear 997cc
12A595 Early crankshaft casting 998cc
12A1454 Later specefication casting 998cc
BHM1436A+ 1985 on (12A1451 casting 998cc
12G82 1100cc
AEG330 EN40B not cross drilled 970cc
AEG171 EN40B not cross drilled 1070cc
12G1287/8 EN16 1.625" con rod journal 1275cc not `S`
12G1505 EN16 1.75" con rod journal 1275cc not `S`
12G1683 12G1505 casting tuftrided 1.75" con rod journal 1275cc not `S`
CAM6232 Rolled fillet radius on bearing journals, A+, 1.75" 1275cc not `S`
AEG315/6 EN40B not cross drilled, nitrided, 1.625" 1275 Cooper `S`
AEG479/480 EN40B cross drilled, nitrided, 1.625" 1275 Cooper `S`
AEG623 EN16 tuftrided 1.625" con rod journal 1275 Cooper `S`
Head's also Thanks to Hot Brick Website
Cyliner Head Specifications
Cylinder head specifications guide chart
Different heads for the A-series engine
Number Inlet Outlet room Normally fitted to Fits also
2A628 1 1/16" 1" 24,6cc 850 Mini, A35,A40 998,1100 and Cooper
12A1456 Minor, SpriteMkI
2A629
NOTES:- round port on intake.
12A1458 1 1/16" 1" 24,6cc late 850 &998 as above but a hole
in the front for temp
gauge
12G185 1 1/16" 1" 24,6cc 997 Cooper fits as big valve head
for 850 & 998
12G202 1 5/32" 1" 26,1cc Austin/Morris 1100 As above but square
formed inlets
NOTES:- square intake ports
12G206 1 7/32" 1" 28,3cc Early MG 1100 upgraded 12G202
NOTES:- large square intake ports with location rings
12G295 1 7/32" 1" 28,3cc 998 Cooper,MG 1100 Fits on 998 when bigger
Sprite MKIII valves are needed
12G940 1 5/16" 1 5/32" 21,4cc 1275GT,A/M1300 Can be modified to the
9 Bolts 33,3mm 29,53mm Sprite MK IV specifications below
Marina 1,3
NOTES:- good ports in standard condition
12G940 1 13/32"1 5/32" 21,4cc Austin 1300 GT Fits on 1275 Gt when
11 Bolts 35,6mm MG 1300 MK II bigger valves are needed
late Cooper S
AEG165 1 13/32" 1 7/32" 21,4cc Cooper S Can be used instead of
12A185 the 11 bolted 12G940
AFG163
NOTES:- 12a185 was early casting coded yellow afg163 is later colour coded
brown or blue
12G940 1 5/16" 1 5/32" 21,4cc Turbo MG
NOTES:- sodium cooled exhaust valve and improved cooling but thinner deck.
CAM4180 1.0625" 1" 25.5cc 998 Mini A+ and lead free
_________________ Stop Licking the Dog...I Don't Care Who Started It
|