Clutch master cylinder

[rsk289]

I've heard a story that the 2000 series cars used a clutch master cylinder with a built-in reservoir - is this correct, or did any have the separate reservoir (a larger version of the brake cans)? Anybody know about RHD, and would this be correct, but with metal cap?

Girling Master cylinder with Integral reservoir from Merlin Motorsport

There is also a choice of small (44mm) or large (61mm) reservoir.

[mickmate]

Hi Roger, indeed the 289's and the 427 street cars used an integral reservoir for their clutch masters. We had to pull the motor to get this shot for you, I hope you appreciate it ;-)


It looks like the 44mm to me.

[Cobra #3170]

Wow Nick, that baby needs some attention, makes me glad I have had all those leaky FE's over the years. I thought the Girling units were sized in inches .70 ?

[rsk289]

Yes Nick, I certainly do!!
Great shot, and looks like the smaller size reservoir.
Yes, the cylinders are sized in inches and 0.70" is correct for the clutch. The sizes I gave are for the two different diameters of reservoir available, not the hydraulics. They're quoted in mm in the catalogues.
Roger

[Dan Case]

If you use the type reservoirs and especially caps that Girling supplied for decades do yourself multiple favors and buy some aftermarket silicon rubber dirt/air/water seals.




They are especially useful on original style clutch master cylinders that gets road splash. Those little breather holes in the Girling caps let the world into the reservoirs pretty quickly. For me they ended the twice a year flushing of brakes and clutch and mushy clutch in between flushes. Exhaust heat also doesn't seem to affect the brake master cylinders like it use to when atmospheric water was being pulled into the reservoirs every time the engine bay cooled off.

The Girling rubber cap seals come out; as do the plastic strainers in the steel reservoirs.

[rsk289]

Excellent advice - I saw those in the catalogue and wondered what they were for! Never needed them before, with my Healeys, TRs etc. The reservoirs are all high-mounted on those cars.
As ever, thanks guys - great info!