auxillary fuel pump switch

[Thomas Frisardi]

Thanks, Thomas. I wasn't aware of that. Not familiar with 911's. Is the center tunnel and fuel line open to the interior of the car, as it is in the 356?

Dave

Yes, it is. The similarities among all of the air-cooled, torsion bar equipped Porsches are remarkable. They all feel somewhat alike to drive, too, imho.

[David Baugh]

Touche!
I stand, corrected. But still don't like the idea.

Dave

[John Hearn]

Mike
You lost 4.6cc at 45 F, Just wait till you stop a hot engine..... go back in half an hour and measure the fuel in the bowl!!!
Modern fuel evaporates much more quickly than when these cars were new.
KTF
John

[Frank Earle]

FYI.....

A number of years ago I became very tired of endless cranking of my engines in my rdstr and cab, and finally decided to install a fuel pump in each of the cars. I purchased a couple of 6-volt Airtex pumps (Ref: NLA 108 005 00) from Brad at NLA and mounted them inside the passenger's foot well. There was easy access to the fuel line coming from the tank, so I tapped into that with no problems. I then obtained a couple of 1.5 pushbutton switches (very basic, press/release activated switches with two leads from Radio Shack Ref: 275-0644), mounted them on the inside lip at the bottom of dash (completely out of sight), drilled a small hole to mount the small, low-profile switch button, and hard-wired (soldered) the the wiring from the pump....also put in an inline fuse holder - 10A fuse (Radio Shack Ref: 270-1281). Now, all that's required is to open the fuel cock, and just press and hold the button for approx 15/20-seconds, the float bowls fill, the engines fire right up....a couple of taps on the gas pedal helps if the car has sat for some time, and I am ready to romp! Every thing is neat, unseen and no more endless cranking on the 6-volt systems.

Give it a try!

KTF

Frank Earle
#927

[Mike Ruddy]

John

Excellent point.

Frank

Very useful, thank you.

[Wil Mittelbach]

Frank -
Coincidentally, per your post and my prior 21Feb subject post with pics, it appears we both have quite similar and practical fuel primer pump system installations with like components with their locations and operation - which hopefully may be of assistance to other 356ers for dry carb priming.
Carry on,
- Wil

[Frank Earle]

Wil,

Your set-up is darn close to mine, and I'm sure you have had no issues since the install. I echo you thoughts that perhaps our inputs will help others. If i get around to it, I'll take some shots of my install and post them. I had to do a little creative mounting of the pump in the wheel well of my '58 Cab due to the rather large 'bootster' or perhaps it's a power-supply box for the original Blaupunkt. No matter, it all worked out.

Appreciate your note.

Frank

[Thom Fitzpatrick]

Regardless of which location you select, spend the extra money to buy the correct size AWAB clamps.

I'd never heard of AWAB clamps; this is what I'm using: https://www.mcmaster.com/#53175k84/=16jchzc

[Thom Fitzpatrick]

[...]I defy anyone to identify an automobile manufactured during the era of safety regulation which came from the factory equipped with a fuel line running through the interior of the vehicle

Or having the fuel valve inside the vehicle, where it could be kicked by a long-legged passenger, and will drip fuel inside the vehicle when the seals fail.

When I got my car, the fuel valve leaked, and the smell was awful. I've replaced the valve and all of the rubber fuel lines, but I still have a faint odor of gas inside the car. For that reason, I'm happy to have another potential source of fuel leaks safely outside the car.

[Thom Fitzpatrick]

Here's my switch solution: I went with the "Radio Shack" style switch from Zim's, and made my own bracket. It's not pretty, but it's discreet.