Mrmerlin

NOTE the spring length is more critical after its compressed,

I have seen where the spring has shattered due to whats called coil bind,
(this is where a spring thats too big gets compressed into a space thats too small)
then small pieces of splintered metal are then sent into your clutch line,
and they eventually make it to the slave and the MC seals and cut them.

EcurieArgyll

FINALLY ! My new clutch MC has arrived.

Measurements seem to be the same as those shown above for recent FTE MCs, ie 80mm piston and 92mm spring

Big differences to my old unit

The new rod is 5cm shorter
The bodies are the same from flange face to circlip and from flange face to end
The new piston is 6mm shorter to the spring base
The new spring is 12mm longer uncompressed and 1-2mm longer compressed

The part of the new piston that goes inside the spring is 7mm longer than the compressed spring length, so the spring will never be totally compressed as it currently stands.

I presume the guidance to remove 4.5mm from this piston "neck" and a couple of spring coils, will result in more available travel and then a spring that isn't in danger of being over-compressed due to that extra travel?

With regard to the 5cm difference in rod length, I guess I should just go with preference for pedal position?? It did always feel like a very high pedal.