Series Gearbox identification

Where is the clutch slave located (this will tell you wether it is a series 2 or 3 box). Either box will fit as a replacement though there are a few little changes you will have to make going either way (s3 box in s2 means moving the clutch pipework and grinding a small lip off the chassis so the clutch will fit(

And if you are replacing a 2A box with a Series3 then you will need a different clutch cover plate without the bearing boss and if it's a 9" clutch you will need a full clutch and dowel change on the flywheel. Gearbox number ??

Martin

The Series 3 gearbox differs from the Series 1,2,2a box in that it has synchromesh on all forward gears where the earlier box has it only on 3 &

1. The easy identification is that the Series 3 has a horizontal direct acting clutch slave on the Left side of the box, the earlier boxes have a vertical external slave cylinder on the right side operating a cross shaft.

But note that the Series 2a boxes were subject to a number of significant changes, denoted by suffix letters on the number stamped on the right side of the box. You should prefer the ones with a suffix C or higher. All series boxes are interchangeable (except Stage1) subject to changing the slave cylinder plumbing, but note that the bell housing for the six and Series 1 petrol is different from the 2.25 petrol and diesel engines.

Some 2a chassis may need modification to provide clearance for a S3 slave cylinder. JD

Unless of course someone has changed the bellhousing. As said before, a number would help in identification, or a link to some pics front and rear.

And the early Series 1 is different again. :-)