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23mm master cylinder question...

i'm looking for a 23mm master and wondering if anyone who's done this can give me a part# or a lead on where to purchase? i heard it's a MBZ product but not sure. looking for the non-booster version. TIA
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Last edited by G50911; 01-08-2018 at 12:46 PM..
Old 01-08-2018, 12:41 PM
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https://www.ecstuning.com/b-trw-parts/brake-master-cylinder/8d0611021b~trw/

confirm with mr verburg, but I think this is the one.
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Old 01-08-2018, 01:07 PM
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Quote:
Originally Posted by G50911 View Post
i'm looking for a 23mm master and wondering if anyone who's done this can give me a part# or a lead on where to purchase? i heard it's a MBZ product but not sure. looking for the non-booster version. TIA
Depends on the year
for boosted card from '77 up use the 930 m/c


for non boosted use ATE (ports face left) # 03-2123-3402.3

for the latter ATE you also need a longer 105x7mm actuating rod, and 2x 45 plastic fill fittings + usually a few feet of fiber fill hose

These parts used to come in a nice kit


I used to get the kits from JWE, I hear they are still in operation on a limited basis or perhaps give Steve Weiner a buzz
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Old 01-08-2018, 01:20 PM
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The 911 Turbo mc is a 23mm. Buy it here from the host of this website that is providing all the info on 'how to' DIY and access to the hundreds of Porschefiles!
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Old 01-08-2018, 01:24 PM
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Quote:
Originally Posted by juanbenae View Post
https://www.ecstuning.com/b-trw-parts/brake-master-cylinder/8d0611021b~trw/

confirm with mr verburg, but I think this is the one.
Nope, that is only for the 996/Boxter/Cayman up
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Old 01-08-2018, 01:27 PM
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thanks for the replies. this would be for a non-boosted car. i found this online, part# is 03-2123-3402.3 so can i assume it's the correct one? doesn't include the angle plugs but i already have the hose and adjustable pushrod.



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Old 01-08-2018, 01:27 PM
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I believe there's a 90 degree elbow off a 993 clutch master cylinder that will also fit and work as the 90 degree elbow for the 23 mm brake m/c. That part number is 911-423-923-00. I haven't tried this yet though so I'm not certain it'll work.

The ATE part number for the 23 mm m/c (non-boosted) appears to be correct based on the fact that it matches the part number I received in a kit I purchased recently (ATE 03.2123-3402.3) - ports facing left for left hand drive cars.

You may also need a 10 mm plug if your existing m/c is like mine which has two brake lines coming off 1 port as seen in the following photo. Ignore the 23 mm m/c i'm holding on up this photo. It was a different 23 mm m/c with ports facing passenger side.


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so looks like the one i saw has the manufacturers part number of 002.430.93.01 and/or 537.33006.237 but it's interchangeable with 03.2123-3402.3

comparing it to yours @lightbulb8817 it's a little different configuration. does it appear that way to you also?
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Old 01-08-2018, 02:21 PM
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Ignore the 23 mm m/c with the blue tape on it in my photo. That's not the correct one and it doesn't match the part number i gave. I returned it to get the correct one.
Old 01-08-2018, 02:33 PM
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Here's a 23 and a stock 19, the 19 has the pressure actuated brakelight switch, the 23 needs to have a switch on the brake pedal


Here's a 23 installed, There's more room w/ an alloy cross member than w/ a steel version
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Old 01-08-2018, 02:36 PM
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get it from redogmotorsports.com he is on here somewhere. he has nice kits and all the premade lines
Old 01-08-2018, 03:47 PM
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thanks for the additional pics bill. here are some of the one i picked up...



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Old 01-08-2018, 03:47 PM
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anyone know where i can get a longer actuator rod? or should i just make one myself?
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1971 911 (PTS Black) - Built 3.6 Sleeper
1989 911 (Grand Prix White) - Cabriolet Bone Stock

Last edited by G50911; 01-11-2018 at 06:26 PM..
Old 01-11-2018, 06:00 PM
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anyone know where i can get a longer actuator rod? or should i just make one myself?
unless you buy the kit you'll need to make one

here's what they look like




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Old 01-12-2018, 05:52 AM
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I was told a push rod from '67-68 will work, but i haven't tried it myself.
Old 01-12-2018, 08:03 AM
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thanks for the heads up and thanks bill for the pics. i went to hardware store and only found a grade 10.9 bolt in the size i needed. it's a little overkill but i picked it up anyways. i'm going to attempt to cut and round the end off but i don't have high hopes cause this sucker is hardend.

as a backup, i called pms and they sold me one of their pushrods and 90* elbows so i should be covered!
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Old 01-12-2018, 10:36 AM
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I have a 23mm MS in my 73 hot rod that I just purchased. It came with 930 front rotors & calipers, but the set up is quite stiff when depressing the brake pedal. Still trying to figure out if the oversized 23mm MS is the reason for this.
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Old 01-12-2018, 10:39 AM
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what's up steve! does your 73 have a brake booster? if so, check that.
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Old 01-12-2018, 10:45 AM
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Quote:
Originally Posted by stevesc_us View Post
I have a 23mm MS in my 73 hot rod that I just purchased. It came with 930 front rotors & calipers, but the set up is quite stiff when depressing the brake pedal. Still trying to figure out if the oversized 23mm MS is the reason for this.
It's hard to tell w/o knowing what the rear spec is
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Old 01-12-2018, 11:31 AM
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no brake booster. Rears are stock.
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Old 01-12-2018, 02:15 PM
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