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ashers28

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Reply with quote  #1 
Hi all

I've recently bought a part finished Super 6, which is approx 12 years old

As you can imagine, every time i look at it in ever increasing detail, the list of 'to do items and corrections just keep getting longer.

First project I a working my way through is the entire brake system

It has the Mk3 cortina rears which I have thoroughly replaced and refurbished.

It has the Golf uprights, but fitted with a G50 disc and caliber upgrade.

The problem I have is spongy pedal, which after many attempts at bleeding and the fact that I can't even pump up a solid feel, has led me to think the master cylinder is shot.

So I need to either refurb it with new seals etc or, more simply just replace it.

Does anyone know what this master cylinder is from please.

It's not Cortina or Sierra (although the reservoir is Ford part)

It's not MK 1 or 2 Golf either.

It looks a little bit like an early Beetle one...is this possible ?


Any help would be much appreciated

Cheers
Ash

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Gazza

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Reply with quote  #2 
Hi Ash,

The Master Cylinder will be a ford part unless someone has changed it.

Talk to Paul or Laura at Tiger Racing to get the correct replacement part, Paul will also be able to advise you on what might be the issue.

The brakes on these cars need a bit more foot pressure than your modern run around as there is no servo unit. 

My first Tiger was a Super 6 and I thought that I could improve the brakes by converting it to disc on the rear, all that happened was the car was over braked at the rear.

The other area to look at is fitting a good set of brake pads another car had EBC Yellow pads and I didn't feel happy with the brakes. I have since changed to Ferodo 2500 and they have transformed the brakes on the car.

Another area that will help you is the Super 6 Build Manual that you can down load from this web site which will tell you about the original build spec.

Hope this helps.....

Gazza   

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ashers28

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Reply with quote  #3 
Hi Gazza

Thanks for the reply, and all your advice mate. I do have the manual hard copy and PDF too.

The images on both versions show the same master cylinder as I have, but it isn't a Sierra or Cortina part.

It's not really about pedal pressure or stopping power of the pads though, As I haven't even got to driving it yet lol

The problem is a spongy pedal feel. I' m quite used to non servo brakes and know how solid the feel should be. It's most likely to be a master cylinder issue, which is fine to cure, just need to know which parts to buy.

Good to know you had a 6 before...as I'll have quite a few more questions as I work my way through the projects

Looking forward to Stoneligh this year to meet up with some fellow owners....and (fingers tightly crossed) getting there in my 6 next year!

Cheers

Ash
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gav_gm

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Reply with quote  #4 

Hi Ash,

Sounds to me like the seals in the master cylinder are shot and are letting fluid passed.

You can buy seal refurb kits for some master cylinders, if you can identify the one that you have.  Otherwise, and it is sometime often easier, just to replace the whole unit.

Any chance you can post a photo of it on here? I have had two or three different master cylinders, all referenced as originally fitted to a mk1 Sierra, but all completely different to each other, although interchangeable.

Gav

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gav_gm

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Does the main body of the maser cylinder look like it is cast or pressed?
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ashers28

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Reply with quote  #6 
Hi Gav

Thanks for the replies

I'd love to post some pics...but really struggling to work out how to attach an image on this forum...I must be missing something obvious I guess

Its the same M/C as shown in all Tiger build manuals and also the same as ones I've seen on other Super 6 build diaries - so I'm fairly sure that what I have was the original Tiger supplied part

But ...after some more research I'm pretty convinced it is from an early 70's Beetle...LHD !

The body is cast btw




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weavo56

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Reply with quote  #7 
I changed mine to a ford escort van  M C, its a non servo type with a smaller bore to the sierra one ( 20mm bore )
It has 4 ports on it , just blocked off the 4th with a bleed valve.

m3tbfwF-SXbUhTtpxGksWXg.jpg 

this is the type .


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djtom

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Yes, correct, early '70s VW Beetle lhd model. Cheap, if you can find one anywhere!
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WESTINI

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Reply with quote  #9 
I have 3 spare... will confirm part code to you in the morning, easy to source. If you can't find one, ill post you one out.
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ashers28

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Reply with quote  #10 
Hi Westini

That's very kind of you, thank you

I think I might have the issue resolved now though, but again thank you

Cheers

Ashley
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