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22G1040

COOPER S 4 SYNCHRO LAYGEAR

"S" laygear. UK made for all pre-rod change. 4 synchro gears were the same except for the laygear and 1st motion shaft. The Cooper S and 1275GT had a closer ratio with a 18 teeth 1st motion and 29 teeth (15,20,25,29) 22G1040 laygear. The 25 teeth were 3" diameter whereas the std ratio laygear with same teeth count was 1/8" wider so beware. One of the most sought after 4 synchro remote box close ratio gears. The most certain identification is done be inspecting the laygear. If it is a 22G1040 laygear you have a close ratio box. While you are inspecting the laygear be sure to check the inner surface of the laygear which serves as the outer race of the layshaft bearings. This surface can breakdown resulting in premature failure of both the bearing and the shaft.

Ist motion shaft to go with this has 18teeth - 22G1371 14mm nose mainshaft or DAM3167 with later type 18mm nose mainshaft.

These have been fitted to Rod change gearboxes with layshaft modifications required when owners required a closer ratio gear set.
  • £227.20 exc vat
  • £272.64 inc vat

 In stock

 
help Recommended usage 1 x 22G1040 to fit one mini.
See details below of where 22G1040 is used in AKM manual.
 
4 Synchro Gears Up to 1979 with 14MM Nose Mainsha - Qty 1

 
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4 Synchro Gears Up to 1979 with 14MM Nose Mainsha

Transmission & Gearshift

Classic Mechanical Parts Manual
 

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