Notices
1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks
Sponsored by:
Sponsored by:

Fuel pressure Help/Question

Thread Tools
 
Search this Thread
 
  #1  
Old 12-14-2017, 06:31 PM
Keith Wells's Avatar
Keith Wells
Keith Wells is offline
Freshman User
Thread Starter
Join Date: Jan 2017
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Fuel pressure Help/Question

Truck is a 93 with a 95 351w gone old school... EFI gone carb put on.. I know tons of people say why, but to many issues to say why.... My question is the in tank fuel pump is high pressure right? Can that be disconnected and an inline electric pump installed would that work or would it not pick up the fuel? Looking to not spend 270 dollars on a EFI to carb regulator... Any and all help would be greatly appreciated..
 
  #2  
Old 12-15-2017, 10:36 AM
Conanski's Avatar
Conanski
Conanski is offline
FTE Legend
Join Date: Jun 2006
Location: Ottawa, Ontario
Posts: 30,926
Likes: 0
Received 964 Likes on 763 Posts
Originally Posted by Keith Wells
My question is the in tank fuel pump is high pressure right? Can that be disconnected and an inline electric pump installed would that work or would it not pick up the fuel?
It won't work, pumps are lousy at sucking but great at pushing.

Originally Posted by Keith Wells
Looking to not spend 270 dollars on a EFI to carb regulator.
Where are you shopping? First one I found in a web search(Holley) was $70.
 
  #3  
Old 12-15-2017, 10:49 AM
Keith Wells's Avatar
Keith Wells
Keith Wells is offline
Freshman User
Thread Starter
Join Date: Jan 2017
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Conanski
It won't work, pumps are lousy at sucking but great at pushing.


Where are you shopping? First one I found in a web search(Holley) was $70.
All I saw when I searched for EFI to carb regulator is one for over 250. I did find a few others but Didn't say it would work or not.... Will and regulator for carb work? With the existing pump? Thanks
 
  #4  
Old 12-15-2017, 11:26 AM
Conanski's Avatar
Conanski
Conanski is offline
FTE Legend
Join Date: Jun 2006
Location: Ottawa, Ontario
Posts: 30,926
Likes: 0
Received 964 Likes on 763 Posts
You need what is called a bypass regulator because it's not just about the pressure, the factory EFI fuel delivery system moves a lot of volume so you have to keep and use the return line to the tank.
 
  #5  
Old 12-15-2017, 12:34 PM
Keith Wells's Avatar
Keith Wells
Keith Wells is offline
Freshman User
Thread Starter
Join Date: Jan 2017
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Conanski
You need what is called a bypass regulator because it's not just about the pressure, the factory EFI fuel delivery system moves a lot of volume so you have to keep and use the return line to the tank.
Did a search but come up with all sorts of things. abit over welming. The one I see most is https://www.summitracing.com/parts/aei-13220 Is this the only one or can you recommend one that will work that is less expensive? Have everything else to finish the project but this... Thanks for all your help
 
  #6  
Old 12-15-2017, 01:03 PM
Keith Wells's Avatar
Keith Wells
Keith Wells is offline
Freshman User
Thread Starter
Join Date: Jan 2017
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Conanski
You need what is called a bypass regulator because it's not just about the pressure, the factory EFI fuel delivery system moves a lot of volume so you have to keep and use the return line to the tank.
Ok I found this and summit said it would work figured Id ask first
Holley Carburetor Bypass Style Fuel Pressure Regulators 12-887
https://www.summitracing.com/parts/hly-12-887

What do you think? Thanks again
 
  #7  
Old 12-15-2017, 06:29 PM
'89F2urd's Avatar
'89F2urd
'89F2urd is offline
Lead Driver
Join Date: May 2011
Posts: 5,043
Received 122 Likes on 103 Posts
You could just order an 89 or older fuel pump, which were meant for carbs by themselves.

The easiest thing would probably be just to get a carb regulator.
 
  #8  
Old 12-15-2017, 06:37 PM
Conanski's Avatar
Conanski
Conanski is offline
FTE Legend
Join Date: Jun 2006
Location: Ottawa, Ontario
Posts: 30,926
Likes: 0
Received 964 Likes on 763 Posts
Originally Posted by Keith Wells
Ok I found this and summit said it would work figured Id ask first
Holley Carburetor Bypass Style Fuel Pressure Regulators 12-887
https://www.summitracing.com/parts/hly-12-887
Yeah that would work.
 
  #9  
Old 12-15-2017, 06:38 PM
Conanski's Avatar
Conanski
Conanski is offline
FTE Legend
Join Date: Jun 2006
Location: Ottawa, Ontario
Posts: 30,926
Likes: 0
Received 964 Likes on 763 Posts
Originally Posted by '89F2urd
You could just order an 89 or older fuel pump, which were meant for carbs by themselves.
That would require a new fuel tank too I believe.
 
  #10  
Old 12-15-2017, 08:10 PM
'89F2urd's Avatar
'89F2urd
'89F2urd is offline
Lead Driver
Join Date: May 2011
Posts: 5,043
Received 122 Likes on 103 Posts
The front efi tanks are taller than the carb tanks, which means you could technically swap for carb units but lose capacity, but I believe the rear tanks are the same (wouldn't bet ya money on that). I'd try to retain the efi sending unit but replace the pump only for the low pressure unit, which would allow you to retain the proper pickup down in the low sump of the tank, but all this is moot when there is an easier option that is proven to work.
 
  #11  
Old 12-16-2017, 03:52 PM
Keith Wells's Avatar
Keith Wells
Keith Wells is offline
Freshman User
Thread Starter
Join Date: Jan 2017
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Thanks

Thanks for all the help. I will keep you all updated as I move forward..
 
  #12  
Old 03-06-2022, 10:20 AM
Dan Drover's Avatar
Dan Drover
Dan Drover is offline
Cross-Country
Join Date: Jul 2014
Posts: 54
Likes: 0
Received 0 Likes on 0 Posts
I did the same thing
pull the pump assembly out of the tank
Open the housing up
Pull the physical pump out
Replace it with copper pipe (will need to adjust the length a bit)
Make sure the pipe is not all the way up as there is a cross over port
Drill out the valve (it takes full pressure to push open)
re instal and run pump wires to your new external pump.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Brent32
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
2
05-14-2017 03:26 AM
Bossbronco
Engine Swaps
3
09-28-2014 10:08 AM
4wheelex
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
6
12-19-2010 12:28 PM
86F150TRUCKDUDE
Fuel Injection, Carburetion & Fuel System
1
09-29-2002 10:20 PM
jwtaylor
1987 - 1996 F150 & Larger F-Series Trucks
2
10-30-2001 11:22 AM



Quick Reply: Fuel pressure Help/Question



All times are GMT -5. The time now is 02:02 PM.