 I think I found a 21mm master cylinder, Will know for sure in 6 weeks... ugh! |
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| Qarl |
 Jun 21 2004, 01:41 PM
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#1
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Shriveled member  Group: Benefactors Posts: 5,233 Joined: 8-February 03 From: Florida Member No.: 271 Region Association: None   |
I found a 20.64mm (21mm) unboosted master cylinder by ATE which has been the long-desired in between bore for bigger brake conversions.
Some say 19mm isn't enough and 23mm is too much. Porsche used 21mm unboosted master cylinders in some of the early S 911s, but as far as I know they aren't available any more. However, the part I located isn't a Porsche part. This is coming from Germany and as far as I know isn't standard issue for any particular car, which is why it may have been difficult to locate. The configuration of the feed and output ports look correct, as well as the bolt mounting flanges. Also, it has provisions for the hydraulic pressure failure switch, which the 23mm master cylinder doesn't ahve. I will keep you posted. Regards, Karl Ellzey |
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| brant |
Jun 21 2004, 01:45 PM
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914 Wizard Group: Members Posts: 11,623 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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Karl,
what car is it listed for... I had one a few years back.. brand new.. at that time you could still get them from stoddard, but it didn't fit... the one I had was listed to fit a euro 77 3.0... (the 911 SC they sold in europe the year before here) sounds like the same one as it was also 21.6 or 21.4 or something like that it was an unboosted car. I've got to believe that stoddard still has those. but lets compare part numbers. brant |
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| sechszylinder |
Jun 21 2004, 01:55 PM
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Member Group: Members Posts: 247 Joined: 9-April 03 From: /earth/europe/germany/berlin Member No.: 545 Region Association: None
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Hi Karl,
that sounds very interesting. Could you send me the ATE part # ? Perhaps i can get a nice discount price for those parts at my local ate-dealer here in Berlin (IMG:style_emoticons/default/smilie_flagge6.gif) Benno |
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| Qarl |
Jun 21 2004, 02:39 PM
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#4
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Shriveled member Group: Benefactors Posts: 5,233 Joined: 8-February 03 From: Florida Member No.: 271 Region Association: None |
It's not a Porsche Part.
Ate part number: 03.2120-8411.3 |
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| Qarl |
Jun 21 2004, 03:08 PM
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#5
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Shriveled member Group: Benefactors Posts: 5,233 Joined: 8-February 03 From: Florida Member No.: 271 Region Association: None |
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| Qarl |
Jun 21 2004, 03:20 PM
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#6
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Shriveled member Group: Benefactors Posts: 5,233 Joined: 8-February 03 From: Florida Member No.: 271 Region Association: None |
The other intesting part is that it looks like the front bore is 21mm and the rear is 17mm, effectively giving you decent proportioning between front and rear.
Whaddya think? |
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| sechszylinder |
Jun 22 2004, 01:19 AM
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#7
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Member Group: Members Posts: 247 Joined: 9-April 03 From: /earth/europe/germany/berlin Member No.: 545 Region Association: None
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Hello Karl,
that's a very interesting part . It will definitely fill the gap between the two well known choices. I will try to get a price for that part. Concerning the dimensions, I think it's not the bore (or diameter) of the cylinder, which is different for front and rear, it's the stroke ( german : hub), but i wonder how they achieve that. (IMG:style_emoticons/default/unsure.gif) Benno |
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| davep |
Jun 22 2004, 10:24 AM
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#8
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914 Historian Group: Benefactors Posts: 5,141 Joined: 13-October 03 From: Burford, ON, N0E 1A0 Member No.: 1,244 Region Association: Canada |
The piston has two sections on it. One for front, one for rear, doesn't it?
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