AC Industries master cylinder suggestion

[mr matt]

All,
Had AC Industries front disc brakes on my 55 beetle - which I am very happy with.., but seems the MC is now shot. Is there any recomendations on which MC to buy.

The only record I have for a MC is 211611011JZ which shows up as a MC for a . 54-66 - Bus, I beleive this is correct, but want to confirm.

Still waiting to her from AC I for their response.

Thanks
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1955 3-fold semaphore Oval beetle
1971 Convertible beetle
1977 Westfalia, FI, Berlin interior

[esde]

I have run these brakes successfully with the stock 55-64 master, but had better pedal feel using a disc Ghia dual circuit master. Obviously converting to dual circuit is a bit more involved.. but worth it IMO
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modok wrote:
Bent cranks are silent but gather no moss. I mean, ah, something like that.

[VW_Jimbo]

Autohaus sells one for about $40 according to their website.

https://www.autohausaz.com/pn/211611011JZ?srsltid=...IGLWGy1vxi
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Jimbo

There is never enough time to do it right the first time, but all the time necessary the second time!

[mr matt]

ok, thank all...s..what is more involved with the dual MC, esde?
Have 2 lines for the front discs, and one line for the rear... maybe I am missing something...
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1955 3-fold semaphore Oval beetle
1971 Convertible beetle
1977 Westfalia, FI, Berlin interior

[Dan22]

The pressure side connections are straight forward. You will have to have some plugs or dummy brake light switches for the extra ports for the later model brake warning system.

Get a dual type fluid reservoir that mounts right on the M/C to cover the supply side. These are commonly found now. The old reservoir can be abandoned. It is not recommended to use the old reservoir and a "T" to feed both inlets to the M/C as a failure will drain all fluid, rather than retaining fluid for the working half. There are several threads that show the proper setup.
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1-0900722 die langsame grüne Schildkröte
https://www.thesamba.com/vw/forum/viewtopic.php?t=765074

[56Cabrio]

Here is a pic of the reservoir Dan22 is talking about,
exactly what I have on my oval. Not my car,pic found in the gallery.

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1956 Rag Top owned since 1988
1956 Convertible owned since 2000
1963 Hard Top

RIP Dad 4/20/1951 - 2/4/2023

[VW_Jimbo]

I have seen an early metal reservoir cut down the middle, in half. Then a nipple was welded into each side at the bottom. Then the 2 halves are welded back together with a steel plate separating the 2. It ends up looking OG and satisfies the 2 independent banks.

I went looking for it and cannot find it. If you want something like that, you could probably do it yourself, or get a local welder to handle it, or PM me. I might have a free minute in the next few months!

I just remembered where I saw it! Right here on the Jungle Green build!
https://www.thesamba.com/vw/forum/viewtopic.php?t=...p;start=40

It is about half way down page 3. It is a long scroll down!
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Jimbo

There is never enough time to do it right the first time, but all the time necessary the second time!

[56Cabrio]

We will add it to this thread Jimbo

[VW_Jimbo]

Awesome! But please edit your post to “thread”, not tread! That is when the spell checker is not wrong but is not write! (Get it!)

And thanks for inputting that. I am never sure if that is frowned upon or encouraged. I always try embedding a link so anyone who stumbles onto the thread, can get to the info. But I really like when the info is RIGHT THERE!

Thanks man!
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Jimbo

There is never enough time to do it right the first time, but all the time necessary the second time!

[mr matt]

Thanks for all of the info, I would like to keep the original look of the reservoir, so may go with the 2nd option, and thanks for posting the pic.s!
The underneath reservoir is def a second option.
Thanks Dan for mentioning the "T" - have to see how mine is hooked up, been quite a few years
Again, appreciate all the help here.
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1955 3-fold semaphore Oval beetle
1971 Convertible beetle
1977 Westfalia, FI, Berlin interior

[56Cabrio]

[mkhanshaw]

I know I am late to the party and this may be more than you were looking to spend but....
Ron Lummus makes a Wilwood option (basically he makes the adapter to add to the Wilwood unit)

https://ronlummusracing.com/product/wilwood-master-cylinders/

I am putting this on my 54 with 4 wheel disc brakes (also wilwood).
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54 Oval

[Dan22]

Just to share what I intend to do with my dual circuit setup. I will use the provided dual reservoir, but then bore a hole in the top or in the lid, and use the factory single tube to remotely fill it. I think I can use the standard rubber bushing to connect the tube.

I will have extra volume for bleeding the brakes this way too.

If it fails for some reason, I will just dummy the factory reservoir in place and fill the dual from below.
_________________
1-0900722 die langsame grüne Schildkröte
https://www.thesamba.com/vw/forum/viewtopic.php?t=765074

[56Cabrio]

[mr matt]