M21 gearbox

Started by Gibbs, 23 Aug, 2026, 11:27

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Gibbs

Hi,
 I am finally getting some great miles under my belt on my 1947 M21. I've had to do a complete gear box rebuild using another box to mix and match. Getting into gear and changing down are a bit of a mission and I can't help thinking that I've done a bad job on the rebuild. Does anyone know of someone who could look at the gearbox and clutch and sort out my mistakes? I live in Northern Ireland and would have to send the offending parts in the post.
Rob Gibbs

Jim S

Before you remove the gearbox, have you checked that the clutch isn't dragging when it is disengaged? A dragging clutch can cause shifting problems.

Jim

limeyrob

I'm thinking the same, make sure the clutch is right before digging into the box.

Gibbs

Thank you chaps! That's the plan, parts can be tricky?