ShopTalk Forums | Aircooled VW Tech & Restoration Help

i just bought a rebuilt heavy duty generator and a new voltage regulator. my question is what is the difference between the standard generator and the heavy duty one? adn will it fit on the stock generator stand?

Usually “heavy duty” is a vacant term derived my soleness marketing people. See also “Turbo” for abuses of language.

Is both your generator body and voltage regulator marked 38 amp? Or is it a 6 volt with a 12 o.d..?

it is marked 14v38a19 hopefully that helps. the serial number on it is 0101302083. the housing is a german bosch unit but it was rebuilt bu ultima. it's an oreilly part.

Wow, that sounds like a standard equipment or optional high output generator. Once common in '71 bus. The more common is the 30 amp.

So, do you have the dished backing plate tin (to shroud), normally cast (thin) pulley, and matching voltage regulator? The metal stuff is to correct the length of that generator body as it is longer than the 30A body. And the 38A regulator is the 30A versions bigger brother.

i will have to look at the tins when i go to work on the car right now it is at my parents house which is about 60 miles from where i am at. the regulator is definetly a better than the one it is replacing. will let you know how it goes when i install it onto the car. thank you for your help

http://www.shoptalkforums.com/viewtopic.php?t=101786

I can probably hook you up with the regulator, dished sheetmetal, and the special fan hub & spacers, but I sent the only decent pulley I could find to Vgonman (I don't think he ever paid for it, glad you reminded me).
The pedestal/strap, fan, and sheetmetal "ring" are all the same. You can use the 30A (30 019) regulator but should have a 38A (30 021) unit to get maximum output from that generator.

So how do you tell if the fan hub is 38 amp?

what does the 38 amp regulator look like?

The flange on the 38A hub is offset all the way to one end, making it look like a stovepipe hat. You also need some thick spacers (IIRC three of them) to go under the nut.
If they're Bosch regulators, the amperage will be stamped on one of the "legs" i.e. 14V 30A or 14V 38A.

the one i have is a borg warner unit the only numbers on it ar 1312, 12v neg, and 6fb.

i went to the bwd web site and the number for the generator crossed over to the voltage regulator

i just looked up the regulator at www.autosportintl.net by aplication the part number thay have for the geneator crosses over to the one i have. the part number for the bwd regulator is R582.

I am running a 38 amp generator in my '68 Beetle (2017 cc motor) with the correct 38 amp voltage regulator. I tried running a 30 amp regulator, but after continual problems, switched to the 38 reg and it's been three years of trouble-free driving. As I recall, the Bosch 38 amp generators have a GR-17 code (instead of GR-15). I purchased the new Brazilian 38 amp regulator from www.CIP1.com

I'm running the later FI doghouse fan shroud and the hub from my old '69 Westy (I believe 69-71 buses had the 38 gen). For a pulley, I'm using the vintage Santana for proper fan belt alignment

neil68 wrote: I purchased the new Brazilian 38 amp regulator from www.CIP1.com

I'm running the later FI doghouse fan shroud and the hub from my old '69 Westy (I believe 69-71 buses had the 38 gen). For a pulley, I'm using the vintage Santana for proper fan belt alignment

In Aus and the UK at least, the 1600 engine continued as an option up to around 73/74.

Telecom (former name for the current Telstra - main telephone provider in Aus) used a lot of VW vans, and ALL of them were supplied with the 1600 engine - not the 1700/1800/2000 units. All had the 38 amp generator (until replaced by the alternator in 73 I think), so the 38amp generator is reasonably common here in Aus.

Yes - it does need the 38 amp regulator (plus the correct tinware etc to fit it to the bug engine). You'll have continual trouble if you try to use the bug's 30 amp regulator with a 38 amp generator.

how much are you asking for the parts?