The MGA With An Attitude
CLUTCH SPRINGS, Force and Color - CT-110
Clutch spring colour codes - Complimets of John Lambie, Classic Spares
Clutch pressure plate 7-1/4 inch (six springs)
MG TC Yellow 120 lbs
Red 130 lbs
light blue 150 lbs
Clutch pressure plate 8 inch (six springs)
MG TF Midget brown 150/160 lbs
MGA 1500 black/yellow 165/175 lbs to eng. # 16225
MGA 1500 cream/green 180/190 lbs
MGA 1600 light grey 195/205 lbs (MG TF Midget competition clutch)
MGA Twin Cam light grey 195/205 lbs (Spring rate = 282 lb/in)
*Note: Twin Cam pressure plate is different construction from other MGA models.
MGA 1600 has Borg & Beck clutch 8A6-G. Twin Cam has B & B clutch 8ARG.
Same springs do not necessarily produce same force throughout the operating range.
Clutch driven plate damper springs
MGA 1500 white with light green stripes
MGA 1600 Maroon and light green
MGA Twin Cam Maroon and light green
Clutch Kits List - Compliments of Mark Harris
Friction Limit
Kit Part# Model Torque (Torque) Manufacturer Source 105 ft lbs 100 lb/ft *1
MGA Twin Cam @ 4500 rpm - Calculated Borg & Beck 105 ft lbs
GCK109 1971 UK spec MGB @ 2500 rpm Borg & Beck KT9694 MGB - Standard AP *2 KT9679 MGB - Heavy Duty AP *3 KT9679 sold- 130 ft lbs
as GCK109HDR MGOC - Heavy Duty or 176 Nm AP / AP Racing? *4 165 ft lbs
CP2000-3NB MGB AP Racing or 224 Nm AP Racing *5 Sources:
*1 From engineering technical data book TD/G.1
*2 http://www.apclutch.it/pdf/vehicle_applications.pdf
*3 http://www.apclutch.it/pdf/vehicle_applications.pdf
*4 http://www.mgocaccessories.co.uk/acatalog/MGOC_Accessories__Tuning_37.htm
*5 http://www.apracing.com/info/search.asp?keyword=MGB
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