Clutch slave cylinder

[Darnpistonbroke]

Hi.
My clutch slave cylinder is leaking badly. It's on a Chevy 350 powered Dax. The slave cylinder is mounted on a bracket by an aluminium billet clamp with two nuts and bolts. The assembly is then fitted on two gearbox bellhousing bolts. The slave cylinder has no markings on it saying where it came from or who the manufacturer is. The hydraulic pipe is connected by a banjo fitting. The bleed screw is 11mm.
The dust cover has a girdling part number in it.
The slave cylinder looks like a sealed unit and doesn't look as if it can be taken apart.
From my description is this a standard part that is fitted to the Dax and can anyone point me in the direction to where I can buy a replacement?
The car build was completed in 2004.

Thanks in advance.

David.

[jon1d]

It should be a Girling part Brake Clutch Master Cylinder .500 .625 .700 .750 .813 Bore OEM Girling Wilwood.

There should be a size marked .625 or .750. The size is the bore size usually .750 also known as 3/4 inch. A photo would help if it is different from the link below.

https://www.ebay.co.uk/itm/Brake-Clu...EAAOSwuJdZdph1

[Darnpistonbroke]

Hi Jon. No, it's not that one.
I believe it's a 7/8" bore and it has no mounting lugs. It is kept in place by a bolted aluminium clamp. The cylinder body has a recess in it to accommodate the clamp. The rear of the body where it accommodates the pressure line and bleed screw is hexagonal.
I don't yet know how to upload photos on here that can be seen.

[aaronjb]

Does it look like this one? https://roadcraftuk.co.uk/index.php?...product_id=606

[Darnpistonbroke]

Hi Aaron. That's the very one! Blimey, with that bore, no wonder my pedal took two feet to operate the clutch!
Thank you for that. Now to do a little more research to see if they do a bigger bore or if an alternative is available. ������

[dave]

I'm pretty sure that is the only size available.
If you use a larger bore slave you will usually find that there is not enough travel to fully dissengage the clutch.
The overly heavy pedal is most likely down to having some sort of Drag Racing clutch fitted (which is not needed in these cars)


You can use Girling Master Cylinder piston seals to sort out your leak.

[aaronjb]

Hi Aaron. That's the very one!

Your description of the mounting bracket gave it away .. and I thought "I'm sure I've seen that somewhere.." - I've stared at their page of driveline stuff a lot trying to figure out what clutch bits to buy (in the end I bought a complete drivetrain from MDL in the states to make it simple! )

[Darnpistonbroke]

The clutch I have fitted is a McLeod which is a cut above the norm.
The usual arrangement is 3/4” master with a 7/8” slave or so I thought?
What concerns me is the amount of force I need to deliver to a plastic bulkhead!
What do others have on their cars?

David.

[TINKA]

The clutch I have fitted is a McLeod which is a cut above the norm.
The usual arrangement is 3/4” master with a 7/8” slave or so I thought?
What concerns me is the amount of force I need to deliver to a plastic bulkhead!
What do others have on their cars?

David.

That's what I run in mine although the clutch pedal in mine is very heavy I'm used to it now so I don't even notice it most of the time.

[Darnpistonbroke]

By the looks of it I'm I have a 3/4" master serving a 5/8" slave. Very heavy pedal and as said earlier, the bulkhead is only fibreglass which in time will not take too much bending and stress.