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Voltage regulator/alternator questions
I was having some low voltage issues on my 1981 930 (described in a different thread) but am now very confused after digging more into it. My understanding was that for a 1981 and newer car, the voltage regulator is supposed to be internal to the alternator. When I took my alternator to the shop to get tested, they said this alternator (Bosch Remanufactured AL9341X, 788 00507 put on by the previous owner) is externally regulated. I can't see any black box looking thing on my engine bay wall (see pic).
So I have three questions 1. Does my car have the wrong alternator? 2. If not, where is the voltage regulator? 3. Will an externally regulated alternator even work if there is no external regulator?  
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81 -930 82 - Austin Mini 998 78 Mini 1275cc -totaled 83SC Euro w/77 3.0 Carerra Eng.--sold Several other daily drivers not worth mentioning... |
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09-04-2012, 06:20 AM
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Join Date: Sep 2001
Location: Columbus, OH
Posts: 1,011
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I am no expert, but on a hunch with my german translation, the generatorregler, sounds a lot like "generator regulator." Looking in the PP catalog, this item seems to have the same part number, although its appearance is different. Would be nice to know what brand alternator you have.
Pelican Parts - Product Information: 911-603-206-13-M260
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Doug 79 SC Targa w/ ITBs, 2004 Cayenne Turbo |
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09-04-2012, 06:31 AM
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Quote:
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81 -930 82 - Austin Mini 998 78 Mini 1275cc -totaled 83SC Euro w/77 3.0 Carerra Eng.--sold Several other daily drivers not worth mentioning... Last edited by jwakil; 09-04-2012 at 06:51 AM.. |
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09-04-2012, 06:45 AM
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There is no doubt that the harness with the blue wire there is plugged into a alternator regulator as the previous poster stated.
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1974 sahara beige 911 targa 1982 chiffon 911sc 1985 prussian blue metallic carrera |
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09-04-2012, 10:54 AM
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That is the alternator for the 1974-1977 Porsche 911
Quote:
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83 SC Targa -- 3.2SS, GT2-108 Dougherty Cams, 9.5:1 JE Pistons, Supertec Studs, PMO ITB's, MS2 EFI, SSI's, Recurved Dizzy, MSD, Backdated Dansk Sport Stainless 2 in 1 out, Elephant Polybronze, Turbo Tie Rods, Bilstein HD's, Hollow 21-27 TBs, Optima Redtop 34R, Griffiths-ZIMS AC, Seine Shifter, Elephant Racing Oil Cooling. |
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09-04-2012, 11:26 AM
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you can buy a brand new bosch, with internal for the SC. for $264 on a popular website with a lifetime warranty and 2 years of road side. So don't go down the reman route. You don't have to spend $500 for a new one...
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83 SC Targa -- 3.2SS, GT2-108 Dougherty Cams, 9.5:1 JE Pistons, Supertec Studs, PMO ITB's, MS2 EFI, SSI's, Recurved Dizzy, MSD, Backdated Dansk Sport Stainless 2 in 1 out, Elephant Polybronze, Turbo Tie Rods, Bilstein HD's, Hollow 21-27 TBs, Optima Redtop 34R, Griffiths-ZIMS AC, Seine Shifter, Elephant Racing Oil Cooling. |
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09-04-2012, 03:38 PM
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930
1974 Porsche 911 targa 2.7
