edit: Which E12 one? (identifying brake master cylinder...)

[JTY]

A few years ago I bought Volvo 4 pot calipers from someone right here on the forum (although I can't remember who it was...). In the deal were included e30 rear calipers and a - what I always believed to be a E12 - brake master cylinder. But the brake master cylinder isn't E12. And I have no idea what else it can be of, which is a problem since I want to order a revision kit for it. Can you guys identify it?

What we do know, is that it:
- is Ate
- has a '22' towards the front
- has a '4' towards the rear
- is probably not E12, E30, E21, E28, Volvo, ...

What it looks like:






All help very much appreciated! The other option is buying a new E12 brake master cylinder, I guess...

Many

Jeroen T.

[JTY]

Okay, leaving the already acquired brake master cylinder route and going the new E12 brake master cylinder way...

So, I can best use a E12 brake master cylinder for the Volvo 4 pot conversion because of the double circuits to the caliper, right?
Which one?

34 31 1 120 832 -> 23,81 mm
34 31 1 120 479 -> 22,20 mm

Thanks in advance for the help.

Cheers

Jeroen T.

[e21-Mark]

Could be Porsche 944 iirc.

I found OE 323 m/cyl works fine with 4 pots anyway.

[Jeroen]

I found OE 323 m/cyl works fine with 4 pots anyway.

Agree, and the feel will even be better on LHD cars since we don't have the sloppy detour between the brake pedal and the master. I believe caliper surface has only increased by 10-15%.

[JTY]

But I have to get a new one anyway. Isn't the E12 the better option in that case? Or feel free to suggest other alternatives (at reasonable cost).

[e21-Mark]

E12 master cylinder is really expensive. That's assuming you can even find one now.

[JTY]

They are €150 at W&N's current sale:http://www.wallothnesch.com/e/ange/fram ... loffer.htm. About €270 at the dealer.
A 323i one is €100 at W&N.

Now that I come to think of it, is the E12 brake master cylinder a straight fit onto the 323i OEM servo?

[JTY]

Ok, it's decided: will go for new E12 brake master cylinder IF it is a straight fit onto the 323i OEM servo. Can anyone confirm, please?

Many thanks!

[jimbob]

ive read two posts with cars fitted with the e12 master and neither mentioned changing servos so i think its a direct fit
lemonayd and alpina jimis old car i think