 MPS Diaphrams, What ever happend? |
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| 914Sixer |
 Sep 14 2010, 05:31 PM
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#1
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914 Guru  Group: Members Posts: 8,897 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region 
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There was a discussion at length about different possibilities of making some of these. The electrical portion of the MPS rarely fails unless water was a factor. Anybody in the process of making them?
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| EdwardBlume |
Sep 14 2010, 05:33 PM
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#2
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914 Wizard Group: Members Posts: 12,338 Joined: 2-January 03 From: SLO Member No.: 81 Region Association: Central California
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Aren't the diaphrams made out of unobtainium? or some bad stuff ?
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| 76-914 |
Sep 14 2010, 05:52 PM
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#3
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,507 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California
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IIRC, copper/beryllium and I think it was Jim Kelly's thread.
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| Bleyseng |
Sep 14 2010, 06:41 PM
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#4
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Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
some one needs to figure out the center as I can get the metal. We also need someone to machine the stamping die to punch the diaphram...
I have no time working mostly in South America these days..... |
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| StratPlayer |
Sep 14 2010, 08:02 PM
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#5
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StratPlayer Group: Members Posts: 3,278 Joined: 27-December 02 From: SLC, Utah Member No.: 27 Region Association: Rocky Mountains 
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Will Volvo MPS diaphram's work.
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| jk76.914 |
Sep 14 2010, 08:48 PM
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#6
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Senior Member Group: Members Posts: 809 Joined: 12-April 05 From: Massachusetts Member No.: 3,925 Region Association: North East States |
I got sidetracked with the Bosch traditions offer to remanufacture MPS, including new diaphram and seals, albeit for a hefty price. I tried to get them to offer a rebuild kit, including diaphram and seals, but they weren't interested.
Where I am- Summer came, and car was running sweet, so this has been on the back burner. I was able to test a diaphram at work and confirm "presence" of Be in the alloy, though not quantify it. That's probably enough, because 2%-3% is typical, and more doesn't do much property-wise in our application. Brush-Wellman offers a couple of alloys of BeCu sheet that should fit the bill. Also, since I have several diaphrams of various design and vintage that are intact, my next step is to make some of the seals for the housing and for the calibration screw in the diaphram. That's what I'll do first when I get to it- maybe next month. As far as the Volvo diaphram goes- I imaging it's the same one. I have measured and disassembled two Volvo MPS's and I think they are exactly the same, except for the calibration... Jim Kelly |
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| StratPlayer |
Sep 15 2010, 09:00 AM
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#7
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StratPlayer Group: Members Posts: 3,278 Joined: 27-December 02 From: SLC, Utah Member No.: 27 Region Association: Rocky Mountains
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I'm asking about the volvo MPS because I have some NOS volvo MPS's and I was thinking about taking them apart for the diaphram.
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| 914Sixer |
Sep 15 2010, 07:52 PM
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#8
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914 Guru Group: Members Posts: 8,897 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region
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The Volvo ones will probably work if they are the same style as the VW ones. Early Type 3 VW did not have a diaphram, I bought a NOS one thinking it had one.
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