Fuel system rebuild questions (early Weber)

[ralfabco]

Greetings.

I used the search feature, and did not find what I am looking for.

I have Semjon's excellent shop manual on the DVD.

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I am trying to rebuild the entire fuel system, for a 67 911S.


I looked up Pelican's parts diagrams and listings. I get to the following:

Hi pressure fuel hose
Vacuum Hose

They sell by the meter. - which size and how long should I choose ?

mm ID/OD
How many meters ?

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Is there any simply (ABC) book, that describes everything in detail ?

Thanks
Ralph

[CamBiscuit]

Ralph

Can't help you with the hoses, why not take a sample off the car and take it to your local autoshop? There are a few weber books out there, also check your local autoshop or I think the dreaded MotorMeister has a Weber manual on their website that you could look at or print out.

Good luck

[911quest]

If you have a local VW shop that works on old aircooled beetle's they will have the fuel line you need.

[Bert]

I pulled everything out and measured each piece. I bought some of the odd size hose from GPR.

http://www.gprparts.com/OEMParts/porsche.asp

Pelican also carries most hose sizes.

The PET CD and Pelican has some diagrams.

Good luck.

[Rich Lambert]

I logged in tonight to ask this exact same question.

Plus...which fuel regulator should I get?

And...do I need a fuel pressure guage?

One more...does anyone have a spare drain plug for a Weber 40? I overtightened one and broke it.

Last one...the PO installed one of the small Facet fuel pumps. Which pump should I get to replace it? I don't care so much about originality, I just want to get some fuel moving.

Thanks,
Rich
'66 911

[Bobs 67S]

The rubber fuel line with the gray fabric and blue line tracer is again carried by your local Porsche dealers.

(This is by memory so bear with me)

Fuel hose connections:
short piece from gas tank to tunnel tube
Tunnel tube to the engine side rail tube (just above the transmission)
Side rail to fuel pump (on the left side of the engine compartment)
Fuel pump to gas filter
filter to splitter.
Splitters to carb banjo fittings (2)
Short section on the webbers between the banjos (2).

I'm guessing 4 to 6 feet of rubber line. Depending - if you still have the hard line attached to the splitter (at the front of the engine, going side to side -attached to the shock tower cross brace).

Look for the Norma brand hose clamps, too. You'll use about 18 of them. www.eagleday.com has the yellow cad plated ones at $6 a pop. Others have them in silver at much less.

[Fritz A. Ficke]

Thanks Bob for the clamp info!

[Grady Clay]

Ralph,

Pelican is down right now but there is a LOT on this subject. There is available (I think from Pelican Parts) original fuel hose (C 6 SN 710) 999.180.030.50 sold by the meter. I’m a proponent of using the ’69 and later Norma-Schellen (N-S) hose clamps 999.512.055.02. For ’67 there weren’t positive clamps, only metal sleeves that covered the hose ends. Today, I would never use those except for show.

The fuel pipe assembly that delivers fuel to the carburetors can have the crimp fittings removed and then use new hose and N-S clamps.

Unless you are intending to show your 911, I recommend a circulating fuel system. Search Pelican on my name and “circulating”. All FI systems use that and it can be easily adapted to a carburetor system. This reduces the propensity for “vapor lock” and possible carb fires.

As always, when working with the fuel system, safety is critical. Gasoline is probably the most dangerous substance we are normally in contact with. Please take care.

Best,
Grady