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IndigoBlueCooperS
 Post subject: Tin Can Master Cylinders
PostPosted: Sun Jun 19, 2011 2:20 pm 
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Anyone had the zinc plating redone on these?
Can they be done?
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GT mowog
 Post subject:
PostPosted: Sun Jun 19, 2011 2:22 pm 
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Yes ans Yes. You might have to re-drill the primary port though.

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IndigoBlueCooperS
 Post subject:
PostPosted: Sun Jun 19, 2011 2:28 pm 
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You might have to re-drill the primary port though.

So that would mean drilling a hole in the side of the can, after it has been replated?
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GT mowog
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PostPosted: Sun Jun 19, 2011 2:33 pm 
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IndigoBlueCooperS wrote:
You might have to re-drill the primary port though.

So that would mean drilling a hole in the side of the can, after it has been replated?


Yes. I just then soft solder over the hole, using plumbing metal.

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1071 S
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PostPosted: Sun Jun 19, 2011 9:28 pm 
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Be careful.... The plating process can eat into the solder that holds the tin can together. Mine ended up with a few leaks and eventually the top popped off.

Cheers, Ian
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michaelb
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PostPosted: Sun Jun 19, 2011 9:32 pm 
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I had mine both reconditioned by a brake shop and they inserted a stainless sleeve into both and re-plated them. Like new apart from a plug in the side where the hole was drilled.

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gafmo
 Post subject:
PostPosted: Sun Jun 19, 2011 9:39 pm 
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why not buy new ?

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1098
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PostPosted: Sun Jun 19, 2011 9:50 pm 
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Agreed, new aren't much over 150 dollars or so last time I had to change one over for a friend.
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66S
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PostPosted: Mon Jun 20, 2011 6:53 am 
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The cans on Mk1 UK built cars were tin plated, I would assume Aussie ones were too.

Al
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Mick
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PostPosted: Mon Jun 20, 2011 8:36 am 
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Location: Under the bonnet son!
I had a number plated some time back, I didn't have a problem with the primary port closing up luckily. The zinc only bonded to the outside of the can in direct line with the anode. The master cylinder bore was shadowed in the process, so didn't see the effects.

The acid cleaning is often the executioners axe however. If they're too corroded then metal will be eaten clear through. This is not always a bad thing however... More of a reminder that they're sometimes beyond their time..
Watch some of the replacements, for a while there the UK was only selling master cylinders plated in the matte green used in modern car nuts and bolts.

These three shouldn't have been gold BTW, but applying lemon juice (citric acid) fixes that up..

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