Clutch Slave Cylinder - Allegro 1.5

[Scotty2]

I'm having trouble getting a replacement slave cylinder for my Allegro 1.5HL.
They look like a Mini one, and are the same size, but the hydraulic hose fitting is 3/8" where the Maxi and Allegro ones have a 7/16" thread.
e-bay has many listed as "Will fit Mini/Allegro/Maxi, but the thread is wrong. I did have a seal repair kit and fittted that, but it did'nt last as the bore is scored.

So has anybody got a link to one? 22mm bore (7/8") but 7/16" thread for the flexi.

[Cylon2007]

Would it not be easier to get a new flexi made up with the correct fitting at each end to allow you to use the new cylinder?

[geeman237]

Would this be the one?
https://www.oliveiravalentimlda.com/GSY114-Slave-c...

[Scotty2]

Could be. I have asked what the thread is. Trouble is, they all look the same. I took a "spare" one off an E series engine I had in stock which also has the correct 7/8" thread but unfortunately it was seized solid and the bore was corroded.

[RB CV8]

Have you tried Past Parts in Bury St Edmunds? They recondition hydraulic cylinders so may be able to make the one you have serviceable.

[Scotty2]

Thanks. I have ordered the one from Portugal.
I am also getting one of mine tapped out to 7/16" as a spare.
Apparently they are pretty rare now, but frustrating to see so many advertised that won't actually fit.

[Scotty2]

The one from Portugal has arrived and is the correct one. GSY114 or Moprod MSC901. Now fitted and mobile.

As for the thread for the flexi, it is not 7/16" but a metric thread! My Engineering pal has bought a suitable tap, so I am getting a couple of spares made by drilling and retapping Mini style ones.

[Turbobanana]

Good result Scotty, glad you're mobile again.

As a fellow owner of an old Brit (Triumph GT6) I am acutely aware of how difficult it can be sourcing parts that ought, on the face of it, be quite easy to get but aren't.

[Scotty2]

For future info, the thread is actually M12 x 1.