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I'm trying to find a replacement for the single cylinder non servo (5/8") Escort Mk 1 Master cylinder to upgrade it to a tandem one for safety.
The Mk 2 Escorts had tandem cylinders (non servo) but I cannot find a lot of info on the bore sizes.
I would like either a 5/8" - 5/8" tandem or ideally a 5/8" - 0.7" tandem if possible.
Mounting points horizontal.
Can anyone help, or offer an alternative M/C that would fit the horizontal mount on the car?
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Not sure if they'll be useful in your situation, but MK2 son had a compbrake catalogue which listed a number of different cylinders and applications?
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16grit
Part of things
Posts: 213
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I'm trying to find a replacement for the single cylinder non servo (5/8") Escort Mk 1 Master cylinder to upgrade it to a tandem one for safety. The Mk 2 Escorts had tandem cylinders (non servo) but I cannot find a lot of info on the bore sizes. I would like either a 5/8" - 5/8" tandem or ideally a 5/8" - 0.7" tandem if possible. Mounting points horizontal. Can anyone help, or offer an alternative M/C that would fit the horizontal mount on the car? Escort Mk1 8cwt van used a 'biased' twin circuit master with 0.7 / 0.75 bores front / rear Girling Part no. 64068993 - probably be pricey if you can find one.  |
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Not sure if they'll be useful in your situation, but MK2 son had a compbrake catalogue which listed a number of different cylinders and applications? That would be useful, thanks. |
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I found those Andrew but they are all a bit bigger bore than we would like. |
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Tr7 one is around 0.7", defender one is similar but a bit bigger I think.
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I think we are going to struggle to find one small enough  May have to stick to single circuit. I have found a reservior extension to give more capacity (and it's transparent so at least you can see the level) so that may have to do as a last resort. |
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16grit
Part of things
Posts: 213
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I think we are going to struggle to find one small enough  May have to stick to single circuit. I have found a reservior extension to give more capacity (and it's transparent so at least you can see the level) so that may have to do as a last resort.
It's not possible to use a fabbed up a reverse cylinder bias box or use / modify a Mk1 Escort RS bias box and run small cylinders?
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Last Edit: Jan 7, 2022 2:35:09 GMT by 16grit
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Everything is possible, but I'm not going down that rabbit hole.
I'm restoring a friends car for free, I just preferred safer design brakes but may leave them as they were if there is no 'bolt on' alternative. They have worked perfectly well for 40 years so far so I guess they are ok.
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There was a small bore one used on U.S. Market Elans, Kelvedon do a new one but its £250.....
I fitted a new good quality master cyl, a fluid level lamp, Goodridge lines and check it over regularly.
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Last Edit: Jan 7, 2022 14:10:42 GMT by kevins
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How about an mx5 master cylinder? My brother has one fitted on his Gilbern.
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I could never find a new no servo master cylinder for my mk2 so added a servo tower
Land Rover defender ones are common on 2.0 capris. Might be an idea?
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Last Edit: Jan 8, 2022 19:49:23 GMT by pauly22
1994 BMW 525i touring
2004 BMW Z4 sorn and broken
1977 Ford Escort
1982 Ford Capri getting restored
1999 Mazda B2500 daily driver.
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hmm, i don't know any sizes etc, but i know on Ladas they use mk2 golf master cylinders, and a quick google >looks< simular.
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The other option is to use a widely available one and move the holes in the bulkhead and pedal up.
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Last Edit: Jan 9, 2022 18:50:56 GMT by kevins
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Kevins, I'm not altering the bulkhead now, got nearly 2 weeks work in it!
The thing is a small bore tandem isn't widely available, they are all bigger bore so would need a new pedal assembly as well.
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You can usually re-drill the hole for the push rod in the pedal higher and weld the original up,but yes it would mean cutting the bulkead up. Another option is a remote servo on the 0.7 cyl, you'd probably only need one on the front cicuit on something as light as a pop, I've done this on our minor and the brake balance seems about right.
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Jan 10, 2022 18:56:06 GMT
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I'm going to give up on the idea - the current set up works and I'm not looking to do more work on it. It would have been a nice upgrade if it were easy, but 'if it aint broke, don't fix it' seems to apply here I think.
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Darkspeed
Club Retro Rides Member
Posts: 4,699
Club RR Member Number: 39
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Jan 10, 2022 20:51:09 GMT
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The simple modification to give a small improvement in safety is to fit a level warning switch to the reservoir and a lamp on the dash.
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Jan 10, 2022 23:37:41 GMT
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Yes Andrew I agree, the plan is to buy the 'extension' tube they make so there will be 3 new levels of safety if I can make it all work. 1, new extension to give double the amount of fluid in the reservoir.  2, extension is see through so it's easy to keep an eye on levels. 3, fit a low level warning light (as long as I can get one to fit). |
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That is all I ended up doing on my Elan, car builder solutions sell a switch you can put through a 10mm hole drilled in the cap.
I bought a single circiut master cyl without the integral reservoir (much the same price), you can then screw a larger reservoir into it (or fit it remotely if required)
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