Gear Box Ratios ( 4sp and 5sp )
Posted: 17 Oct 2021, 21:02
A few years ago I went through the trials of swapping my 4sp gear linkage to match the 5sp box I had.
TBH it was a right lash up.
What irritated me somewhat was the 'useless' first gear. By the time you get moving you had to change again.
From memory I think it's an ABN or ABM ( I can confirm later in the week. )
Looking at this table from RJES, I'm wondering what can be done, as there are numerous iterations with varying ratios.
Is it possible to alter this somehow?
i.e. Look at the 4 sp which seems to be for a 2.1 Syncro, but critically taller gearing and 80mph revs similar to mine.
Makes me wonder whether the 5sp is worth it IF the ratios cannot be altered much.
Thoughts?


TBH it was a right lash up.
What irritated me somewhat was the 'useless' first gear. By the time you get moving you had to change again.
From memory I think it's an ABN or ABM ( I can confirm later in the week. )
Looking at this table from RJES, I'm wondering what can be done, as there are numerous iterations with varying ratios.
Is it possible to alter this somehow?
i.e. Look at the 4 sp which seems to be for a 2.1 Syncro, but critically taller gearing and 80mph revs similar to mine.
Makes me wonder whether the 5sp is worth it IF the ratios cannot be altered much.
Thoughts?

