Hi everyone,

I have a type 9 gearbox with concentric hydraulic clutch which is not fully engaging with the clutch cover plate. I am fortunately able to see it actually work looking through the original clutch arm hole in the bell housing. My question is how much travel does a concentric slave cylinder move? My slave is packed out so there is no space between the slave and clutch cover fingers. I can see the movement of about 4mm, is this amount of travel expected from this type of slave cylinder or is there a shortfall of travel. Any advice would be very helpful.

Regards

Tony.

Do you have air in the system? What pedal ratio ? What size bore is the master cylinder do you have?

Hi, I have a clutch master cylinder that's .625 and is freshly been bled as for the pedal ratio I haven't got the first idea what to do to work that out.

Thanks for the interest in my problem.

Tony.

Hi, I have a clutch master cylinder that's .625 and is freshly been bled as for the pedal ratio I haven't got the first idea what to do to work that out.

Thanks for the interest in my problem.

Tony.

It’s possible a larger bore master cylinder would help but it may increase the amount of pedal pressure? If you are using a non integral type M/C they are available in several bore sizes from around £21.50 plus VAT and postage from Rally Design

Thanks for the info, Rusty.

As the gearbox is fitted, the clutch fingers should push the release bearing back 15-17mm from uncompressed, this should be reversed during your clutch pedal operation.
If the release bearing was not pushed back this far during fitting, it cannot travel further than its uncompressed position and would require extra spacers.
If it was pushed back this far, then either the system needs bleeding or the m/c bore is too small/ratio is too high.
With a .625 cylinder you need a 5.5:1 pedal ratio if you have the ford galaxy type csc (green bellows and long bleed screw).

Dave