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mikedjames
Samba Member
Joined: July 02, 2012
Posts: 3322
Location: Hamble, Hampshire, UK
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 Posted: Sun Oct 06, 2024 12:07 pm Post subject: Re: 1979 VW bay window alternator |
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| PYTHON T2 wrote: |
Here is a better pic of that wire mentioned above. I have a lot of tracing wires to do. The PO just slapped it together enough to make it run. I do have a printed copy of the wiring diagram. The alligator clip is really stupid.... I don't know that I will see the PO again, but he does deserve a good slap. The story was a husband and wife had this bus and had owned if since they bought it in '79, he had bought the new engine and passed away before he could install it. The guy I got it from had his guy install it and it has sat for the last 7 years on a lot. Obviously this guy has no clue what he was doing or just didn't care. There is a carburetor riser with port I can purchase to be able to hook up the brake booster since there is not a port to hook it up to right now.
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You can drill and tap a hole for a fitting in the intake manifold below the carburettor and connect the brake booster hose there . No need to buy a new manifold part, easier to source a fitting.
The vacuum advance port from the carburettor to the distributor should be just beside the idle mixture screw on the carburettor body.
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Ancient vehicles and vessels
1974 VW T2 : Devon Eurovette camper with 1641 DP T1 engine, Progressive carb, full flow oil cooler, EDIS crank timed ignition.
Engine 1: 40k miles (rocker shaft clip fell off), Engine 2: 30k miles (rebuild, dropped valve). Engine 3: a JK Preservation Parts "new" engine, aluminium case: 26k miles: new top end.
Gearbox rebuild 2021 by Bears.
1979 Westerly GK24 24 foot racer/cruiser yacht Forethought of Gosport.
1973 wooden Pacer sailing dinghy |
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PYTHON T2
Samba Member
Joined: September 19, 2024
Posts: 16
Location: Tennessee
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| Posted: Sun Oct 06, 2024 3:36 pm Post subject: Re: 1979 VW bay window alternator |
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Figured it out! The black wire is suposed
to go to the coil, the other is to the oil pressure switch! |
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cougs311
Samba Member
Joined: January 24, 2023
Posts: 2
Location: CO
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| Posted: Wed Jun 18, 2025 8:51 am Post subject: Re: 1979 VW bay window alternator |
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I am also working on replacing my alternator, wiring harness, external voltage regulator and cooling boot. I'm concerned about frying the wiring harness as I watched bckyrdwizkids video on Youtube. My old alternator had this little rectangle piece, unsure of the material as part of it broke off, kind of felt like dried up wax paper, under one of the nuts. You can see some of it left in the photo of the alternator. The new one I ordered from Heritage doesn't show that piece. bckyrdwizkids video mentions the necessity of creating space between the screws and back plate to reduce possibilities of fire. Not sure what this item is, if I need to buy it or if the new alternator doesn't get as hot as the old one. |
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SGKent 
Samba Member
Joined: October 30, 2007
Posts: 42579
Location: at the beach
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| Posted: Wed Jun 18, 2025 2:16 pm Post subject: Re: 1979 VW bay window alternator |
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you really need to be careful of the stud length because it can short out to the backplane. There are many threads here on TheSamba regarding that problem when replacing the alternator.
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"Most people don't know what they're doing, and a lot of them are really good at it." - George Carlin |
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