Morris Minor Owners Club

I purchased a box of brake parts a while ago and have recently got round to sorting them out. I have found a part that appears to be part of the vacuum system for a servo brake, unfortunately I don’t know what it’s called or what it does and was wondering if anyone on the forum could help. Grateful for any assistance

This would be better if I had attached some pictures

I'm pretty sure that's nothing to do with your braking system ! That's a Tecalemit 3 way electro valve- fitted to things like dual fuel tanks or LPG conversions where you switch supplies between tanks.

https://lpgshop.co.uk/tecalemit-3-way-e ... 2-138-12v/

It looks different to the one in the link as there is only one inlet on the one I have as opposed to three so I don’t think it can switch over. Could it be anything to do with releasing pressure in the vacuum system although I have no idea why that would be useful.

philipkearney wrote: ↑Tue Jul 25, 2023 7:21 pm I'm pretty sure that's nothing to do with your braking system ! That's a Tecalemit 3 way electro valve- fitted to things like dual fuel tanks or LPG conversions where you switch supplies between tanks.

https://lpgshop.co.uk/tecalemit-3-way-e ... 2-138-12v/

If it was something to do with the brakes, it's no use now....

Certainly a Tecalemit valve, but not a 3-way, it seems to be controlling a vent of some sort.
Personally, I'd be putting 12v on those 2 cable and see what it does, but my guess is some sort of air valve.

Tecalemit are only a garage equipment business these days, they used to have 5 or 6 divisions with fingers in different automotive pies, but all that is long gone.

Looks very similar to the anti run on valve on a late Mini, usually attached to the brake servo bracket.
It can just be seen in this picture of my Cooper close to the bulkhead with a black plastic pipe attached, bad image though as it's a bit dark

panky wrote: ↑Wed Jul 26, 2023 11:20 am Looks very similar to the anti run on valve on a late Mini, usually attached to the brake servo bracket.
It can just be seen in this picture of my Cooper close to the bulkhead with a black plastic pipe attached, bad image though as it's a bit dark

To paraphrase 'Dr Doolittle in the film of the same name, "By Jove I think he's got it!"

Same valve shown here: https://www.johnrichardssurplus.co.uk/r ... 9535l.html

I've never even heard of one before, now I'll have to look up to see what they do

If it works it's worth a bit, they seem to be £100 or more, if you can find one.
https://www.moss-europe.co.uk/anti-run- ... n127z.html

Pressing the accelerator down with the ignition off does the same thing and saves you a £100.

I agree that it looks identical to the valve in the image of the mini and it would make sense that it attaches to the vacuum feed for the servo as it was found in a box of brake parts. What is it’s purpose of a run on valve and is it worth fitting?

yes it's a anti run on valve Ford fitted them to some mk2 escorts(and probably other cars) as well.

the valve closes when you turn the ignition on then when you key off it opens and makes the mixture very weak such that the engine won't run on.

To me, if the car didn't have it originally, and you haven't got an engine from something else that did have one, why fit something that isn't needed?

Some engines when they're hot, can 'diesel', i.e. carry on running a bit when you switch off.
I seem to recall Triumph fitted such valves to some versions of some models, depending on the engine, I don't think they all had it.
They fitted them if there was a problem during development.
No different to Morris fitting the engine steady to the Minor after they had some clutch judder issues..

If you fit it and it goes wrong, it's more problems.

So if you don't need it, don't fit it.

Thanks for the replies, I now know what this valve does and I definitely don’t require it to be fitted to my standard 1098 pickup.