Electric fuel pump install on a carburetor car

PostPost by: Enevand » Wed Apr 10, 2019 5:36 am

Hello,
I have decided to install a low pressure electric fuel pump https://bestarny.com/electric-fuel-pumps-for-carb/ on my Type3, for a number of reasons (vapor lock, the ability to prime my carbs after sitting for a long period, a cleaner look of the engine bay, the fact that you cannot find locally mechanical pumps, only electric ones and so on.).

Does anybody have pictures of an aftermarket electric pump installation? I am looking for ideeas of how to mount it below the fuel tank in a way that is both safe and does not require drilling any part of the car's body.

Thanks in advance.
Last edited by Enevand on Fri Apr 19, 2019 5:15 am, edited 1 time in total.
User avatar
Enevand
New-tral
 
Posts: 1
Joined: 09 Apr 2019

PostPost by: nmauduit » Wed Apr 10, 2019 1:04 pm

fwiw, here is some photos on the setup recently installed on my street S4 : the pump is at the center next to the tank, it was first tried temporarilly with the stock nylon fuel hose (photo), then I installed a black braided teflon line for the pressurised section, direcly from the top of the pump (sorry no photo of the final result at hand).

img-20180906-03457.jpg and
temporary installation with stock nylon hose


I'm planning at a later point to build a shield, possibly a quarter of a cylinder, between the tank and the back of the diff. The pump is held by a bracket (iirc 1 hole in the trunk vertical wall) and a bit isolated from vibrations.
S4SE 36/8198
User avatar
nmauduit
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 2037
Joined: 02 Sep 2013

PostPost by: crannyr » Wed Apr 10, 2019 1:20 pm

Here is what I did on my S4. The red switch on the left is a inertia activated fuel pump shut-off switch,
Attachments
img_20140329_132759_609.jpg and
img_20140329_132738_704.jpg and
img_20140329_132748_132.jpg and
crannyr
Second Gear
Second Gear
 
Posts: 132
Joined: 10 Oct 2004

PostPost by: UAB807F » Thu Apr 11, 2019 7:47 am

Hi,
I mounted a facet pump for similar reasons and fitted mine in the small space between the outermost side of the fuel tank and rear wing/bumper. In normal use you can't see anything because the boot carpet covers it.

I didn't want to drill the car body so I made a small wooden "L" to fit alongside the tank and mounted the pump on that. It means I can lift out the whole assembly if I want to and when in place it's covered over by another plywood panel & carpet, level with the top of the tank.

elan-electronic-fuel-pump001b.jpg and


Although it's a low pressure pump and supposedly designed for carburettors I also fitted a pressure regulator. That's currently at 2.5psi on the dial and it seems to work ok.

Brian
User avatar
UAB807F
Fourth Gear
Fourth Gear
 
Posts: 725
Joined: 20 Dec 2010

PostPost by: rgh0 » Thu Apr 11, 2019 10:24 am

All modern electric pumps will lift fuel out of an Elan tank so mounting it above the tank in the recess over the diff between the wheel arches works also.

cheers
Rohan
User avatar
rgh0
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 8814
Joined: 22 Sep 2003

PostPost by: denicholls2 » Thu Apr 11, 2019 3:51 pm

UAB807F wrote:Hi,
Although it's a low pressure pump and supposedly designed for carburettors I also fitted a pressure regulator. That's currently at 2.5psi on the dial and it seems to work ok.
Brian


The pumps themselves, as the pictures show, are quite small. The other two pieces of hardware (inertia shutoff and regulator) will probably take up more space. People who don't fit a regulator see mixed results with Webers, which are overrun at about 3.5 psi input. Flooding results if your unit's output is above this number, and the available pumps seem to vary above and below it.

A single unit with regulated output and inertia shutoff would be just dandy. :)
denicholls2
Fourth Gear
Fourth Gear
 
Posts: 656
Joined: 23 Jan 2006

PostPost by: webbslinger » Thu Apr 11, 2019 9:33 pm

My pump is outboard of the tank similar to Brian's although I drilled holes through the wheel wells and mounted it on rubber dampers. I used an inline filter between the pump and tank, an inertia cut-off switch, and a pressure regulator.
webbslinger
Second Gear
Second Gear
 
Posts: 208
Joined: 23 Jun 2012

PostPost by: Elanman99 » Thu Apr 11, 2019 10:31 pm

UAB807F wrote:Hi,
I mounted a facet pump for similar reasons and fitted mine in the small space between the outermost side of the fuel tank and rear wing/bumper. In normal use you can't see anything because the boot carpet covers it.

I didn't want to drill the car body so I made a small wooden "L" to fit alongside the tank and mounted the pump on that. It means I can lift out the whole assembly if I want to and when in place it's covered over by another plywood panel & carpet, level with the top of the tank.

Although it's a low pressure pump and supposedly designed for carburettors I also fitted a pressure regulator. That's currently at 2.5psi on the dial and it seems to work ok.

Brian


My pump installation is virtually identical but my mounting method is much cruder! I just used a couple of lumps of upholstery type foam rubber and stuffed the whole lot down the side of the tank. Same pump although badged Bendix (fitted in 1969) and same regulator and setting.

I only recently put the foam 'mount' and I now miss hearing it when the ignition is switched on which was always reassuring as the sound changes when the float chambers are full (after not using the car for a month).

Ian
68 Elan S4 DHC. Built in a weekend from a kit (just like the advert said)
User avatar
Elanman99
Fourth Gear
Fourth Gear
 
Posts: 727
Joined: 11 Sep 2003

PostPost by: nthSteve » Fri Apr 12, 2019 2:41 am

Howdy.

I used a Facet Gold-Flo 40002 (E) pump. It's a new version of the bigger round pump that ticks. Has pressure relief & anti-siphon valve, 1/8 NPT Female in & out. I mounted it on the RHS inner fender well, above the tank, with stiff rubber isolators. The bottom has a gasketed cap over the cleanable/replaceable filter. Here is a list of their pumps. I got the pump and spares from pegasus and aircraft spruce.

http://www.facet-purolator.com/tech-information/

It's worked very well, and was handy when I was draining the tank because the sender flange was leaking (which I cleaned up and put back with a thicker, viton gasket from Dave Bean, Hylomar Blue, and [longer] stainless button head cap screws).
-Steve, SoCal, '72 Sprint DHC
formerly Lotus 47, Lotus Cortina
User avatar
nthSteve
First Gear
First Gear
 
Posts: 21
Joined: 06 Jul 2018

PostPost by: awatkins » Fri Apr 12, 2019 3:39 am

FWIW Facet Goldflow, previously known as Bendix Elmira pumps were used in Lamborghini 350/400 GT, Espada, Miura, etc without external regulators, all but the Miura having 40 DCOE carbs. The Miura used two pumps in parallel.
awatkins
Second Gear
Second Gear
 
Posts: 91
Joined: 23 Sep 2015

PostPost by: pharriso » Mon Aug 03, 2020 11:33 am

I just fitted a Autobest F4027 (Private label Airtex E8016S) in my Elan with a glass Fuel filter on the intake:
IMG_0951.jpg and

IMG_0957.jpg and


I turn the ignition on for a couple of seconds & cranking times (both Hot & Cold) are dramatically reduced - instant so far... :D

I bought the pump from Amazon ($23) & the relay & inertia switch off eBay.

No need for a pressure regulator (yet); the spec of the pump is 2.5-4 psi. :roll:
Phil Harrison
1972 Elan Sprint 0260K
User avatar
pharriso
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 3596
Joined: 15 Sep 2010

PostPost by: Bruce Crowthorne » Tue Sep 01, 2020 12:41 pm

OK, so we seem to have covered the installation in the boot (trunk), but what about the engine end?

I have Webers and when I rebuilt the car I used some braid covered tubing, but of course it has the connector for the fuel pump. The fuel line from the tank also has the connector for the fuel pump.

What solutions have people used to join the fuel line to the carbs?

Just leave the pump in place and let the electric pump just push the fuel through it?
Not sure I like this as it doesn't sound very elegant!

Make up a piece of aluminium with tapped holes that take the connectors for the fuel pump, then blank off the fuel pump and mount it off the blanking plate?
Quite like this as it is reversible.

Extend my braided hose from the T piece and just join it on to the existing fuel line.
Not very elegant and I feel I would need to add some support.

So what have others done?
Thanks
Bruce
User avatar
Bruce Crowthorne
Third Gear
Third Gear
 
Posts: 270
Joined: 30 Aug 2005

PostPost by: pharriso » Tue Sep 01, 2020 12:55 pm

Bruce Crowthorne wrote:OK, so we seem to have covered the installation in the boot (trunk), but what about the engine end?


Bruce, I wondered about this & could not find a lot of information posted here.

I fitted a fuel pump blanking plate (without Oil deflector yet) & had a piece of copper pipe made up with the correct fittings to go between the supply line & the Carb fuel hose:
IMG_0931.JPG and
Please excuse excessive application of sealant!
Phil Harrison
1972 Elan Sprint 0260K
User avatar
pharriso
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 3596
Joined: 15 Sep 2010

PostPost by: Bruce Crowthorne » Tue Sep 01, 2020 1:07 pm

That is nice and simple! Well done, I must admit I was doing the usual and making it more complicated by thinking of getting a special "widget" turned specially
Thanks
Bruce
User avatar
Bruce Crowthorne
Third Gear
Third Gear
 
Posts: 270
Joined: 30 Aug 2005

PostPost by: Grizzly » Tue Sep 01, 2020 9:09 pm

pharriso wrote:
Bruce Crowthorne wrote:OK, so we seem to have covered the installation in the boot (trunk), but what about the engine end?


Bruce, I wondered about this & could not find a lot of information posted here.

I fitted a fuel pump blanking plate (without Oil deflector yet) & had a piece of copper pipe made up with the correct fittings to go between the supply line & the Carb fuel hose:
IMG_0931.JPG

Do you remember what fittings you used? from memory i think it has compression fittings but not sure what size?

I haven't got round to removing the mechanical pump yet but it's leaking oil onto the starter so needs looking at, might be the time to do away with it completely.
Chris
User avatar
Grizzly
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 2020
Joined: 13 Jun 2010
Next

Total Online:

Users browsing this forum: No registered users and 8 guests