Fuel pumping setup on a 1700?

[beetleman217]

How is fuel pumping set up on a carbureted 1700 engine? There's no mechanical pump, so an electrical should be hooked up? Does it work like FI engines where there's a fuel ring out and back into the tank with a pressure regulator? How was it originally on buses that came with the 1700 engine?
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1977 Westfalia
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[busdaddy]

Type 4's that were factory equipped with carbs used a mechanical pump: http://www.thesamba.com/vw/forum/viewtopic.php?t=541339
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[aeromech]

Does it work like FI engines where there's a fuel ring out and back into the tank with a pressure regulator?

No. The carbureted setup doesn't return fuel to the tank like a FI system does. You can have a low pressure electric pump going through a fuel pressure regulator to bring the pressure down to around 2 1/2 psi. Here's one I used.

Amazon

Summit Racing

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[Wildthings]

I believe it was Bus Daddy that had a post on how to relieve the pressure in the lines after shutdown so that the engine doesn't flood as badly during a hot soak. You might consider following his lead if you are installing a system from scratch.

[beetleman217]

Thanks busdaddy. I looked at the case and this is what I found:

It looks like it's plugged from the factory? Nothing in there except for a bug nest I had to clean out.. So how do you think this specific engine was delivered gas? Was there ever a factory low pressure electric pump for carbureted engines?
_________________
If all else fails, stop using all else

1977 Westfalia
1961 Beetle

[beetleman217]

Aeromech, the Carter one from Amazon, does it include the regulator? Is it that smaller cylindrical part?
_________________
If all else fails, stop using all else

1977 Westfalia
1961 Beetle

[Wildthings]

[beetleman217]

[Wildthings]

[busdaddy]

That must be a 411/412 or Porsche case designed for FI, I see it has what looks like the early relief plug.

Those rotary pumps are pretty good at maintaining pressure, but a good regulator is worth the time and expense just in case, some of those pumps are made in China afterall.

I've also had good luck with Facet's Gold-flo and Posi-flo products.
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[The Fez]

Summit Racing

[/quote]

I have the same pressure regulator on my 74 - I like what you did with the addition of a pressure gauge. What brand/model is the gauge, if you don't mind sharing that information.
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[williamM]

My 1700 has that oil pressure relief also- it was present for solid lifters only- That should be in quotes-

Then there is the mechanical pumps push rod that must remain or you dump oil pressure thru its bore.

When replacing the mechanical pump- a new pump rod is often needed.- and you should put the fuel lines on the pump first- don't forget the bakelite spacer.
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