GMCforum: GMCnet » [GMCnet] Carb fuel pump preasure. Isn't it 6 PSI.

Home » Public Forums » GMCnet » [GMCnet] Carb fuel pump preasure. Isn't it 6 PSI.

Show: Today's Messages :: Polls :: Message Navigator

[GMCnet] Carb fuel pump preasure. Isn't it 6 PSI. [message #331201]

Sat, 21 April 2018 21:18

BobDunahugh

Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA

Karma: 11

Senior Member

Someone asked me what's a good fuel pump for our GMC's. I like the Carter 4070. But I can't find the GM recommended PSI. Bob Dunahugh
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

Report message to a moderator

Re: [GMCnet] Carb fuel pump preasure. Isn't it 6 PSI. [message #331216 is a reply to message #331201]

Sun, 22 April 2018 08:03

powwerjon

Messages: 849
Registered: March 2013

Karma: -2

Senior Member

Bob,
When I built my first full electric fuel system eliminating the Mechanical
pump I used a E8090

<
https://www.amazon.com/Universal-Electric-Installation-Inline-Carbureted/dp/B01MSC2EY8/ref=sr_1_4?ie=UTF8&qid=1524399757&sr=8-4&keywords=e 8090+fuel+pump
>
or
http://tinyurl.com/ycemubax

I used that pump numbered pump for over 11 years without any problems. It
is a 5 to 8 psig pump.

The P4070 pump is a very good pump that I have also used with success too.
It is also rated for a 4 - 8 psig outlet pressure.

<
https://www.amazon.com/Carter-P4070-Line-Electric-Fuel/dp/B000CIQ5DG/ref=sr_1_3?s=automotive&ie=UTF8&qid=1524400102&sr=1-3&keywords=ca rter+p4070+in-line+electric+fuel+pump
>
or
http://tinyurl.com/yavjlb7w

Use a 15 amp fuse to power the pump. Be sure to use a low oil pressure
switch to cut off the pump in event of engine shut off. I have also
attached the design of the fuel control system that I designed when I built
my first electric fuel pump setup.

http://www.gmcmhphotos.com/photos/general-pictures/p64776-electric-fuel-pump-control.html

It also includes a primer circuit. As for the pressure switch us can use
any of the following.

https://www.summitracing.com/parts/crt-a68301/overview/
https://www.summitracing.com/parts/hly-12-810/overview/
https://www.summitracing.com/parts/sum-g1438/overview/

If you have any question please type

J.R. Wright
GMC Great Laker
GMC Eastern States
GMCMHI
TZE Zone Restorations
78 Buskirk Custom 30' Stretch
75 Avion (Under going Frame up Restoration)

On Sat, Apr 21, 2018 at 10:18 PM, Bob Dunahugh wrote:

> Someone asked me what's a good fuel pump for our GMC's. I like the Carter
> 4070. But I can't find the GM recommended PSI. Bob Dunahugh
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

Report message to a moderator

Re: [GMCnet] Carb fuel pump preasure. Isn't it 6 PSI. [message #331298 is a reply to message #331201]

Mon, 23 April 2018 20:00

SeanKidd

Messages: 747
Registered: June 2012
Location: Northern Neck Virginia

Karma: 4

Senior Member

My carter 4070 put out 6 psi, but it still lifted the needle on the float, I had to put on a regulator and knock it down to 4 psi.

Sean and Stephanie
73 Ex-CanyonLands 26' #317 "Oliver"
Hubler 1-Ton, Quad-Bags, Rear Disc, Reaction Arms, P.Huber TBs, 3.70:1 LSD Honda 6500 inverter gen.
Colonial Travelers

Report message to a moderator

Re: [GMCnet] Carb fuel pump preasure. Isn't it 6 PSI. [message #333360 is a reply to message #331298]

Mon, 11 June 2018 15:41

GatsbysCruise

Messages: 261
Registered: January 2017
Location: Waukegan, Illinois

Karma: 3

Senior Member

SeanKidd wrote on Mon, 23 April 2018 20:00

My carter 4070 put out 6 psi, but it still lifted the needle on the float, I had to put on a regulator and knock it down to 4 psi.

Is this still true if you have a Mech fuel pump that has a bypass to return fuel to the tanks if it has too much???
I have an Electric fuel pump to prime the system if needed and a mech fuel pump with the bypass on the engine.....

GatsbysCruise. \ 74GMC260 Former Glacier Model style. \ Waukegan, Illinois \ Keep those MiniDiscs Spinning \ MY GREYHOUND IS FASTER THAN YOUR HONOR ROLL STUDENT \ WindowsXP-Win7-Win8.1-UBUNTU STUDIO - UBUNTU VOYAGER - Berzin Auto Center

Report message to a moderator

Previous Topic:	[GMCnet] Emory's Kitchen Hood Vent Install
Next Topic:	[GMCnet] Free GMC in Baltimore area

Goto Forum:

-=] Back to Top [=-

Current Time: Fri Jun 28 19:34:26 CDT 2024

Total time taken to generate the page: 0.01150 seconds