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velum |
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#1
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Member ![]() ![]() Group: Members Posts: 50 Joined: 4-June 08 From: Montréal, Qc, Canada Member No.: 9,135 Region Association: None ![]() |
Hi!
In another thread, I was mentioning that I wanted to convert my '73 914 2L FI to carbs, because my MPS does not hold vacuum anymore. Some people are making me think twice, and I am now wondering what would be the best solution. The MPS is no longer available new... at least here, because I've seen it for sale on a European site for a ridiculous price, more than 800 Euros. I read that it is possible to get it rebuilt, but that the material used for the rebuilt is not the same as the original, and the result is not perfect. Still, I would like to hear from people using rebuilds. Where did they get there rebuilt done. Are they working fine? How much is it to get an MPS rebuilt? Another solution would be to buy a used one. Anyone has a clue of where I could find a good 037 MPS? And how much I should pay or it? Cheers! JF '73 914-4 2.0L FI |
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kkid |
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#2
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Member ![]() ![]() Group: Members Posts: 343 Joined: 18-December 07 From: Oakland, CA Member No.: 8,483 Region Association: Northern California ![]() |
I have a rebuilt unit for '74 2.0 and it works just fine. I also have a NOS 043 unit in my stash. This one works fine off course but I noticed this one is more sensitive to vacuum leaks.
I have another one which was rebuilt for '74 2.0 but did not hold vacuum. So I opened it up and found that the diaphragm and aneroid cells are still fine. By using a vacuum gauge, I pulled vacuum then I heard hiss from the seam between the electrical connector and the unit. So I plugged the seam with silicon caulking material and some vegetable oil on the rubber sealing in the two unit halves. Now the unit holds vacuum just fine by losing only 0.5in Hg in 5 min from 15in Hg. Hope it will help before you pay $$$ (IMG:style_emoticons/default/smile.gif) |
velum |
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#3
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Member ![]() ![]() Group: Members Posts: 50 Joined: 4-June 08 From: Montréal, Qc, Canada Member No.: 9,135 Region Association: None ![]() |
I have a rebuilt unit for '74 2.0 and it works just fine. I also have a NOS 043 unit in my stash. This one works fine off course but I noticed this one is more sensitive to vacuum leaks. I have another one which was rebuilt for '74 2.0 but did not hold vacuum. So I opened it up and found that the diaphragm and aneroid cells are still fine. By using a vacuum gauge, I pulled vacuum then I heard hiss from the seam between the electrical connector and the unit. So I plugged the seam with silicon caulking material and some vegetable oil on the rubber sealing in the two unit halves. Now the unit holds vacuum just fine by losing only 0.5in Hg in 5 min from 15in Hg. Hope it will help before you pay $$$ (IMG:style_emoticons/default/smile.gif) Thanks Kkid! However, I need a 037 MPS for my car according to http://members.rennlist.com/pbanders/DJetP...tm#troubleshoot. Cheers! JF |
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