Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

 
 Reply to this topicStart new topic
> Best place for Fuel Pump
tonybolony
post May 22 2023, 02:19 PM
Post #1


Newbie
*

Group: Members
Posts: 30
Joined: 17-September 22
From: Enland , Wes Yorkshire
Member No.: 26,859
Region Association: None
hey guys , so my 914 2.0 is fitted with a pair of Twin 40 Webbers , and i was wondering where the best place is to put the fuel pump , the pump is currently located under the car behind the passenger seat, however i notice that the fuel filter doesnt fill up totally and the car does get starved , so my question is , is this pump in the wrong place ? or is the pump just not good enough , its and Edelbrock Micro Fuel Pump
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
tonybolony
post May 23 2023, 02:54 AM
Post #2


Newbie
*

Group: Members
Posts: 30
Joined: 17-September 22
From: Enland , Wes Yorkshire
Member No.: 26,859
Region Association: None
well am going to order another pump to try first then in the same position as the last pump
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
technicalninja
post May 23 2023, 07:19 AM
Post #3


Senior Member
***

Group: Members
Posts: 1,212
Joined: 31-January 23
From: Granbury Texas
Member No.: 27,135
Region Association: Southwest Region
Most fuel pumps pump fuel better than they suck fuel.

All makes moved pumps closer to the tank and then into the tank over the years.

Even on the 914 the last pump set ups were below the tank.

Vapor lock is far less likely to happen to fuel under pressure vs fuel under vacuum.

My vote is for below the tank unless originality is critical.

If you already have the pump just replacing it may solve your problem.

Lots of "pump at engine" set ups ran for years without issues.

Adding low pressure transfer pumps was a common modification, however.

I once solved a vapor lock problem on a Dodge van by re-routing the steel feed line outside the frame rail and away from the exhaust.
This was a PIA that I'd do differently now.

I'd just stick a pump at the tank today...
User is online!Profile CardPM
Go to the top of the page
+Quote Post
nditiz1
post May 23 2023, 07:30 AM
Post #4


Senior Member
***

Group: Members
Posts: 1,188
Joined: 26-May 15
From: Mount Airy, Maryland
Member No.: 18,763
Region Association: MidAtlantic Region
I have this on my 6 conversion with PMO carbs. I think it is best in the biz for any car with carbs.

cb performance pump

Mine is located in the frunk. Might want to move your current one first before buying another. Do you have a gauge on it to see the pressure struggling to stay ~3 psi?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
IanK
post May 23 2023, 09:49 AM
Post #5


Newbie
*

Group: Members
Posts: 21
Joined: 28-April 23
From: San Diego
Member No.: 27,324
Region Association: Southern California
As others have said, up near the tank if not in the tank is best. Pushing vs pulling works better.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Geezer914
post May 23 2023, 11:21 AM
Post #6


Geezer914
***

Group: Members
Posts: 1,409
Joined: 18-March 09
From: Salem, NJ
Member No.: 10,179
Region Association: North East States
Rock auto Delphi pump!
User is online!Profile CardPM
Go to the top of the page
+Quote Post
SirAndy
post May 23 2023, 12:36 PM
Post #7


Resident German
*************************

Group: Admin
Posts: 41,636
Joined: 21-January 03
From: Oakland, Kalifornia
Member No.: 179
Region Association: Northern California
Since you have carbs, make sure you get a rotary pump.

Your ears will thank me ...
(IMG:style_emoticons/default/popcorn[1].gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
914werke
post May 23 2023, 05:47 PM
Post #8


"I got blisters on me fingers"
**********

Group: Members
Posts: 10,058
Joined: 22-March 03
From: USofA
Member No.: 453
Region Association: Pacific Northwest
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
tonybolony
post May 24 2023, 08:59 AM
Post #9


Newbie
*

Group: Members
Posts: 30
Joined: 17-September 22
From: Enland , Wes Yorkshire
Member No.: 26,859
Region Association: None
thanks for the info , the pump was at fault and a new one has cured my problem , i will look into putting it hearer the tank in the future, as for Fuel pressure mine is ar 2 psi in the webber 40's do you recommend higher ?

also added a 123 ignition , great bit of kit and now makes my car immobilised too at the ignition which is a nice touch, anybody else use one ? and have any recommended map curves ?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
dr914@autoatlanta.com
post May 24 2023, 11:36 AM
Post #10


914 Guru
*****

Group: Members
Posts: 7,856
Joined: 3-January 07
From: atlanta georgia
Member No.: 7,418
Region Association: None
any isolated 3 lb pump is good enough
QUOTE(tonybolony @ May 22 2023, 01:19 PM) *

hey guys , so my 914 2.0 is fitted with a pair of Twin 40 Webbers , and i was wondering where the best place is to put the fuel pump , the pump is currently located under the car behind the passenger seat, however i notice that the fuel filter doesnt fill up totally and the car does get starved , so my question is , is this pump in the wrong place ? or is the pump just not good enough , its and Edelbrock Micro Fuel Pump
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
930cabman
post May 24 2023, 11:40 AM
Post #11


Advanced Member
****

Group: Members
Posts: 3,056
Joined: 12-November 20
From: Buffalo
Member No.: 24,877
Region Association: North East States
QUOTE(tonybolony @ May 24 2023, 08:59 AM) *

thanks for the info , the pump was at fault and a new one has cured my problem , i will look into putting it hearer the tank in the future, as for Fuel pressure mine is ar 2 psi in the webber 40's do you recommend higher ?

also added a 123 ignition , great bit of kit and now makes my car immobilised too at the ignition which is a nice touch, anybody else use one ? and have any recommended map curves ?


I have run twin Webers on several different sporting machines and always keep the fuel pressure below 2 psi. Never have starved the float bowls.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JeffBowlsby
post May 24 2023, 02:43 PM
Post #12


914 Wiring Harnesses
*****

Group: Members
Posts: 8,504
Joined: 7-January 03
From: San Ramon CA
Member No.: 104
Region Association: None
QUOTE(914werke @ May 23 2023, 04:47 PM) *

Attached Image


Rich that is the cleanest front pump retro install I have ever seen. Kudos.

Ever consider putting together a kit for that?
User is online!Profile CardPM
Go to the top of the page
+Quote Post
914werke
post May 24 2023, 05:56 PM
Post #13


"I got blisters on me fingers"
**********

Group: Members
Posts: 10,058
Joined: 22-March 03
From: USofA
Member No.: 453
Region Association: Pacific Northwest
QUOTE(JeffBowlsby @ May 24 2023, 01:43 PM) *
Rich that is the cleanest front pump retro install I have ever seen. Kudos.
Ever consider putting together a kit for that?

Jeff, Ive been using this clamp setup for sometime, The downside is I do have to trim/grind down the area with the red arrow to allow the shield to fit properly.
Ive got a bracket that is in the works that will make the fit even better & more like what you would expect OE.
A kit is already planned (IMG:style_emoticons/default/smile.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Geezer914
post May 24 2023, 06:27 PM
Post #14


Geezer914
***

Group: Members
Posts: 1,409
Joined: 18-March 09
From: Salem, NJ
Member No.: 10,179
Region Association: North East States
That is a clean set up. I want to move my pump under the steering rack so it is easier to change the fuel filter with out spilling fuel in the front trunk.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
North Coast Jim
post May 24 2023, 06:37 PM
Post #15


Member
**

Group: Members
Posts: 323
Joined: 11-December 15
From: Northern Ohio
Member No.: 19,450
Region Association: MidAtlantic Region
I relocated up front under the gravel shield adjacent to the steering rack. Makes changing the fuel filter much easier. Didn't want the pump in a closed compartment like the frunk.

Just make sure the fuel line routing doesn't interfere with the steering components.

Here's a pic as I just pulled all this out with the gas tank to add in a sway bar.

Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
windforfun
post May 26 2023, 06:00 PM
Post #16


Senior Member
***

Group: Members
Posts: 1,782
Joined: 17-December 07
From: Blackhawk, CA
Member No.: 8,476
Region Association: None
Why is it now easier to change the filter?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 14th May 2024 - 05:04 PM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...