 The Mystery 911 20.5mm Master Cylinder, I found where it came from |
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| 914Sixer |
 Jul 20 2017, 06:50 PM
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914 Guru  Group: Members Posts: 8,871 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region 
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About 2 years ago, I started working on the 75 Orange car. I knew I had a larger than stock master cylinder because of the high pedal pressure. It had the number 20 on it instead of 19. I posted on the the forum and no one had ever seen one. Speculation was it was from a BMW or perhaps a Mercedes. Well, today I was reading UP-fixin der Porsche Vol IV and came across an article about 1969 911 brakes. The article stated that there was a 20.5mm master cylinder. It was only used for the one year or less when it was replaced by the 19.5mm. The part number for it is 901.355.012.04 or ATE 3.2120-3901.3. I love it when I can solve a mystery. (IMG:style_emoticons/default/beerchug.gif)
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Posts in this topic
914Sixer The Mystery 911 20.5mm Master Cylinder Jul 20 2017, 06:50 PM
rgalla9146
About 2 years ago, I started working on the 75 Or... Jul 20 2017, 07:21 PM 914Sixer Rory,
I did not do any checking on the part. I wa... Jul 20 2017, 07:49 PM
bdstone914 Porsche often switches part numbers of little used... Jul 20 2017, 07:53 PM  |
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