 Calling for a 17mm Master Cylinder, Don't like the 19mm!! |
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| Artfrombama |
 Jun 17 2025, 11:32 AM
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Member  Group: Members Posts: 314 Joined: 21-January 24 From: Alabama Member No.: 27,870 Region Association: South East States 
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Replaced the OE 17mm that came on my 74 because it was leaking out of the rear. Replaced it with the 19mm that is currently offered as a replacement.
Not happy with the increased pedal pressure required to stop the car, almost scary in a panic situation. No pedal modulation. I would like to return to a 17mm unit but there seems to be no more out there, does anyone have a source? Is someone in the parts supply chain able to reproduce these parts reasonably? Thanks! |
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| bdstone914 |
Jun 18 2025, 03:23 AM
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bdstone914 Group: Members Posts: 4,995 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
QUOTE(Artfrombama @ Jun 17 2025, 10:32 AM)  Replaced the OE 17mm that came on my 74 because it was leaking out of the rear. Replaced it with the 19mm that is currently offered as a replacement. Not happy with the increased pedal pressure required to stop the car, almost scary in a panic situation. No pedal modulation. I would like to return to a 17mm unit but there seems to be no more out there, does anyone have a source? Is someone in the parts supply chain able to reproduce these parts reasonably? Thanks! It should not be that hard to stop with a 19mm. What pafs are you using? Do you have a used 17mm master? Sometimes rebuild kits pop up. The seals are a common hydraulic style seal. I have never tried to source them. I have had a couple NOS 17mm masters that I have sold. |
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| Artfrombama |
Jun 18 2025, 11:55 AM
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#3
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Member Group: Members Posts: 314 Joined: 21-January 24 From: Alabama Member No.: 27,870 Region Association: South East States
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QUOTE(bdstone914 @ Jun 18 2025, 04:23 AM) QUOTE(Artfrombama @ Jun 17 2025, 10:32 AM) Replaced the OE 17mm that came on my 74 because it was leaking out of the rear. Replaced it with the 19mm that is currently offered as a replacement. Not happy with the increased pedal pressure required to stop the car, almost scary in a panic situation. No pedal modulation. I would like to return to a 17mm unit but there seems to be no more out there, does anyone have a source? Is someone in the parts supply chain able to reproduce these parts reasonably? Thanks! It should not be that hard to stop with a 19mm. What pafs are you using? Do you have a used 17mm master? Sometimes rebuild kits pop up. The seals are a common hydraulic style seal. I have never tried to source them. I have had a couple NOS 17mm masters that I have sold. When I replaced the old master with a new URO 19mm I immediately noticed a difference in the pedal feel and the force required to brake. I still have the previous MC, it was still working correctly but was leaking from the rear. I have no clue to the pads but they were new when I bought the car. New Porterfield R4S pads are in the near future. |
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Posts in this topic
Artfrombama Calling for a 17mm Master Cylinder Jun 17 2025, 11:32 AM
rjames
Replaced the OE 17mm that came on my 74 because i... Jun 17 2025, 11:40 AM Shivers I did the 19 mm M/C and some of Eric Shea’s stic... Jun 17 2025, 11:54 AM mepstein I’m with you. I’ve tried both and prefer a 17m... Jun 17 2025, 11:55 AM
Artfrombama
I’m with you. I’ve tried both and prefer a 17... Jun 17 2025, 01:07 PM StratPlayer Getting ready to install a 23mm MC, recommended by... Jun 17 2025, 12:53 PM bdstone914
Getting ready to install a 23mm MC, recommended b... Jun 17 2025, 10:17 PM Jack Standz We have at least two failed 17mm master cylinders/... Jun 17 2025, 01:45 PM 914werke Agree that it would be best if a rebuild kit coul... Jun 17 2025, 02:05 PM mepstein 17mm rebuild kits are a thing of the past. Im surp... Jun 17 2025, 02:08 PM 914Sixer My car has a one year only 1969 911T 20mm MC used ... Jun 17 2025, 04:40 PM porschetub
My car has a one year only 1969 911T 20mm MC used... Jun 17 2025, 09:40 PM 914xr75 I just purchased a fresh 17mm ATE mc at Pelican la... Jun 17 2025, 06:23 PM 904svo
Replaced the OE 17mm that came on my 74 because i... Jun 17 2025, 06:27 PM bkrantz The 17 mm MC has a cross section area of about 227... Jun 17 2025, 08:50 PM Jack Standz
I just purchased a fresh 17mm ATE mc at Pelican l... Jun 18 2025, 02:12 AM Jack Standz
17mm rebuild kits are a thing of the past. Im sur... Jun 18 2025, 02:17 AM 930cabman somebody has the technology to fabricate these :i... Jun 18 2025, 12:07 PM Artfrombama
somebody has the technology to fabricate these :... Jun 18 2025, 12:37 PM rjames
somebody has the technology to fabricate these ... Jun 18 2025, 01:56 PM 930cabman
[quote name='Artfrombama' post='3210825' date='Ju... Jun 18 2025, 05:02 PM Artfrombama
[quote name='Artfrombama' post='3210825' date='J... Jun 19 2025, 09:39 AM mepstein
[quote name='930cabman' post='3210849' date='Jun ... Jun 19 2025, 11:01 AM 914xr75 Call pelican. They actually took a week to get my ... Jun 18 2025, 01:09 PM pfreiburger Here, try this, a brand new ATE 17mm cylinder (cle... Jun 19 2025, 12:27 AM 914Sixer Another ebay idiot LISTING THE WRONG PART. Jun 19 2025, 08:25 AM |
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