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TR4/4A TR4A clutch slave cylinder

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tdskip

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Well I was looking for something else to rebuild, but the clutch slave cylinder is really a mess so think I'll just replace it.

That did lead to a question however. When Moss referred to the 7/8" bore vs the 1" are they referring to the opening or the actual width of the bore inside the cylinder?

(Don't have calipers handy - sorry)

CORRECTED TO REFER TO SLAVE CYLINDER
 
martx-5

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Re: TR4A clutch M/C

TR4A_IRS said:
Actual bore, I believe.
Click to expand...

Affirmative...actual bore.

However, I went on the Moss site, and they refer to the 7/8" and 1" bores for the <span style="font-weight: bold">slave </span> cylinder, <span style="font-weight: bold">not</span> the master cylinder. I believe the master only came in 3/4" bore for the TR4(A). I think some of the TR6 M/Cs had a 0.70" bore.
 
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T

tdskip

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Re: TR4A clutch slave

martx-5 said:
TR4A_IRS said:
Actual bore, I believe.
Click to expand...

Affirmative...actual bore.

However, I went on the Moss site, and they refer to the 7/8" and 1" bores for the <span style="font-weight: bold">slave </span> cylinder, <span style="font-weight: bold">not</span> the master cylinder. I believe the master only came in 3/4" bore for the TR4(A). I think some of the TR6 M/Cs had a 0.70" bore.
Click to expand...

Yeh, I'm a dope. I was referring to the slave cylinder. Sorry guys!
 
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tdskip

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Re: TR4A clutch slave

OK, I'll admit it. I'm on a "oh, another hydraulic component I can take apart kick"... But guess what, the clutch slave I thought was scrap turns out to be OK for a rebuild once I took it apart.

I had to hone the rear most (as mounted on the car) section of the cylinder but once I did that I was able to slam (I like that part) the cylinder on my now trusty block of wood and the piston and seals came out.

DSCN4070.jpg


DSCN4071.jpg


The inner cylinder where the piston actually sits is fine.

DSCN4072.jpg
 
TR3driver

TR3driver

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Re: TR4A clutch slave

Original 4A slave was cast aluminum (which is a metal
grin.gif
). Looks like you have one from another car, perhaps a Stag. The stock 4A seal isn't going to fit, as it has a big hole through the center (like the MC seal).
 
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tdskip

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Re: TR4A clutch slave

TR3driver said:
Original 4A slave was cast aluminum (which is a metal
grin.gif
).
Click to expand...

LOL - should have expected that come back given my imprecision.

OK, so rebuildable or not sounds like it is time for a correct part.

Anyone, say Randall, have a Stag they are working on and could use this?
 
TR3driver

TR3driver

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Re: TR4A clutch slave

If that is a Stag slave, we could probably work out a swap. Let me check the parts bin this weekend and see if I've got a Girling slave that isn't too corroded.
 
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tdskip

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Re: TR4A clutch slave

Hey Randall - this is yours man. After all of the help and coaching and patience and metallurgy.... ;-)

Serious - send me a PM and let me know where I can mail it off to.
 
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