Final drive ratios and Five Speed Gearbox
| Final Drive Ratios and Five Speed Gearbox | |||||
|---|---|---|---|---|---|
| Available for | 1st Ratio | 2nd Ratio | 3rd Ratio | 4th Ratio | 5th Ratio |
| A plus mainshaft gears | 3.282 | 1.966 | 1.283 | 1.000 | 0.882 |
| Evolution ultra close ratio heavy duty gears | 2.583 | 1.644 | 1.250 | 1.000 | 0.865 |
| Evolution Clubman straight cut | 2.583 | 1.710 | 1.250 | 1.000 | 0.865 |
| ST 4 syncro straight cut - Now N.L.A | 2.544 | 1.731 | 1.258 | 1.000 | 0.91 26 teeth |
| Final Drive Gears Pre ‘A’ Plus | |||||||
|---|---|---|---|---|---|---|---|
| Crownwheel | Teeth | Ratio | Pinion | Teeth | Crownwheel & Pinion Pair |
||
| 22A411 | 62 | 3.444 | 22A413 | 18 | CWP3-4 | ||
| 22G940 | 62 | 3.647 | 22A399 | 17 | CWP3-6 | ||
| 22A401 | C.W.E | 64 | 3.765 | 22A399 | 17 | ||
| 22G340 | N.L.A | 63 | 3.938 | 22G338 | 16 | ||
| 22G101 | 62 | 4.133 | 22G99 | N.L.A | 15 | ||
| 22G370 | N.L.A | 64 | 4.267 | 22G99 | N.L.A | 15 | |
| 22G443 | C.W.E | 65 | 4.33 | 22G99 | N.L.A | 15 | |
| Gearbox Rebuild Service Kits | ||
|---|---|---|
| 4 Syncromesh gearbox rebuild kits. Includes bearings, gaskets layshaft. Kits with differential parts include planet gears, pin, thrusts and bearings. | less differential | with differential |
| Pre A-plus gearboxes have a 14mm wide end on the mainshaft to fit the 1st motion shaft. Complete gearbox rebuild kit for a pre A-plus series. |
MSG20 | MSG21 |
| A-plus have a 18mm wide end to fit the 1st motion shaft Complete gearbox rebuild kit with 2 bearings on laygear |
MSG22 | MSG23 |
| Early A-plus and all ST original ratio straight cut laygears were made to take 3 bearings Complete gearbox rebuild kit with 3 bearings on laygear |
MSG24 | |
| The kits include all bearings apart from the small plastic encased roller bearings under 1st, 2nd , 3rd gear which are available as AAU1815 for 1st gear and AAU1816 for 2nd, 3rd gear.. | ||
Final Drive Gears with 'A' Plus Teeth Angles
| Crownwheel | Teeth | Casting No | Ratio | Pinion | Teeth | Crownwheel & Pinion Pair |
Notes | ||
|---|---|---|---|---|---|---|---|---|---|
| DAM3645 | N.L.A | 65 | DAM3546 | 4.333 | DAM3647 | C.W.E | 15 | ||
| DAM3216 | N.L.A | 63 | DAM3217 | 3.938 | DAM3218 | N.L.A | 16 | ||
| DAM4132 | N.L.A | 62 | DAM4163 | 3.647 | DAM4131 | C.W.E | 17 | CWP3-6-A-PLUS | |
| DAM4779 | N.L.A | 64 | DAM4780 | 3.765 | DAM4131 | C.W.E | 17 | ||
| DAM2677 | C.W.E | 62 | DAM2678 | 3.444 | DAM2679 | C.W.E | 18 | ||
| DAM6327 | N.L.A | 59 | DAM6243 | 3.105 | DAM2808 | N.L.A | 19 | CWP3-1 | 12" wheel |
| DAM2806 | N.L.A | 61 | DAM2807 | 3.211 | DAM2808 | N.L.A | 19 | CWP3-2 | Turbo |
| DAM5925 | N.L.A | 59 | DAM5926 | 2.95 | DAM5927 | N.L.A | 20 | CWP2-9 | 998C Econ |
| TCB10004 | N.L.A | 58 | TCB10005 | 2.76 | TCC10001 | N.L.A | 21 | CWP2-76 | |
'A' Plus type pinions have both sided machined flat.
| Five speed A Plus gearboxes with 3.44 final drives, available to order | ||
|---|---|---|
| MSG04 | Helical gears | A Plus standard |
| MSG05 | Helical gears with X pin diff | A Plus standard |
| MSG06 | Straight cut gears | Clubman Evolution |
| MSG07 | Straight cut gears with X pin diff | Clubman Evolution |
| MSG08 | Helical gears with X pin diff | Evolution Heavy duty |
| MSG09 | Helical gears with LSD | Evolution Heavy duty |
| MSG10 | Straight cut gears with LSD | Clubman Evolution |
| Exchange 4 Synchro Gearboxes - Rod Change | ||
|---|---|---|
| MSG30 | 2.9 F/Drive | 'A' Plus |
| MSG31 | 3.1 F/Drive | 'A' Plus |
| MSG32 | 3.2 F/Drive | 'A' Plus |
| MSG34 | 3.4 F/Drive | 'A' Plus |
| MSG35 | 3.4 F/Drive | Pre 'A' Plus |
Exchange gearboxes must be serviceable with good idler gear housings and casing and the same gear ratio or extra costs will be incurred.
- No broken case fins.
- Good drain plug thread.
- Good idler gear thrust surface.
- No rust on gears.