Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

3 Walbro 255's vs. Magnafuel 4303

Thread Tools
 
Search this Thread
 
Old 01-25-2011, 01:30 AM
  #1  
8 Second Truck Club
Thread Starter
iTrader: (32)
 
Blown06's Avatar
 
Join Date: Apr 2006
Posts: 5,181
Likes: 0
Received 8 Likes on 8 Posts

Default 3 Walbro 255's vs. Magnafuel 4303

Who wins? Volume at these pressures:

43.5psi
60psi
80psi
Old 01-31-2011, 12:49 AM
  #2  
8 Second Truck Club
Thread Starter
iTrader: (32)
 
Blown06's Avatar
 
Join Date: Apr 2006
Posts: 5,181
Likes: 0
Received 8 Likes on 8 Posts

Default

I guess no one really cares.
Old 01-31-2011, 01:12 AM
  #3  
Turd Gen Guy
iTrader: (63)
 
1nasty86's Avatar
 
Join Date: Dec 2008
Location: andalusia, alabama
Posts: 1,533
Likes: 0
Received 3 Likes on 3 Posts
Default

What about the new aeromotive 340???
Old 01-31-2011, 07:23 PM
  #4  
LS1TECH Sponsor
iTrader: (16)
 
Lonnies Performance's Avatar
 
Join Date: Feb 2007
Location: Pittsburgh, PA
Posts: 2,662
Likes: 0
Received 2 Likes on 2 Posts

Default

Getting a good Magnafuel flow chart is the deterrent. Anyone have good data?
Old 02-01-2011, 01:49 AM
  #5  
8 Second Truck Club
Thread Starter
iTrader: (32)
 
Blown06's Avatar
 
Join Date: Apr 2006
Posts: 5,181
Likes: 0
Received 8 Likes on 8 Posts

Default

Originally Posted by Lonnies Performance
Getting a good Magnafuel flow chart is the deterrent. Anyone have good data?
That would help, I can't find any data on their website. Now Why would they do that???
Old 02-03-2011, 12:34 PM
  #6  
Staging Lane
 
Jim Craig's Avatar
 
Join Date: Oct 2006
Posts: 54
Likes: 0
Received 0 Likes on 0 Posts
Default

I've got flow results for a 4301 on 14 volts -- someone send me a 4303 and I'll give you the results

140 gph @ 40 psi -- 13.4 amps
125 gph @ 60 psi -- 16 amps
113 gph @ 80 psi -- 18.5 amps
100 gph @ 100 psi -- 21 amps
Old 02-03-2011, 12:46 PM
  #7  
7 Second Club
iTrader: (7)
 
NicD's Avatar
 
Join Date: Nov 2001
Location: Chandler, AZ
Posts: 2,722
Received 283 Likes on 187 Posts

Default

This is what I was told directly by Magnafuel. They test them at 12.5 volts though instead of 14 so that will make a decent difference.

4303 @ 12.5V
45 psi - 2.3 gpm 14.5 A
55 psi - 2.2 gpm 16 A
65 psi - 2.1 gpm 17.5 A
75 psi - 1.9 gpm 19 A

4301 @ 12.5 V
45 psi - 1.7 gpm 12 A
55 psi - 1.6 gpm 13 A
65 psi - 1.5 gpm 14 A
75 psi - 1.4 gpm 15 A
Old 02-03-2011, 01:01 PM
  #8  
Staging Lane
 
Jim Craig's Avatar
 
Join Date: Oct 2006
Posts: 54
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by NicD
This is what I was told directly by Magnafuel. They test them at 12.5 volts though instead of 14 so that will make a decent difference.

4303 @ 12.5V
45 psi - 2.3 gpm 14.5 A
55 psi - 2.2 gpm 16 A
65 psi - 2.1 gpm 17.5 A
75 psi - 1.9 gpm 19 A

4301 @ 12.5 V
45 psi - 1.7 gpm 12 A
55 psi - 1.6 gpm 13 A
65 psi - 1.5 gpm 14 A
75 psi - 1.4 gpm 15 A
hmmm -- a Weldon 1100-A flows 1.8 gpm @ 80 psi
Old 02-03-2011, 01:26 PM
  #9  
7 Second Club
iTrader: (7)
 
NicD's Avatar
 
Join Date: Nov 2001
Location: Chandler, AZ
Posts: 2,722
Received 283 Likes on 187 Posts

Default

Originally Posted by Jim Craig
hmmm -- a Weldon 1100-A flows 1.8 gpm @ 80 psi
At what voltage? All of these bigger pumps seem to pickup dramatically with higher voltages being applied.
Old 02-03-2011, 02:13 PM
  #10  
Staging Lane
 
Jim Craig's Avatar
 
Join Date: Oct 2006
Posts: 54
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by NicD
At what voltage? All of these bigger pumps seem to pickup dramatically with higher voltages being applied.
14 -- that is where they test their pumps.
Old 02-04-2011, 01:17 AM
  #11  
8 Second Truck Club
Thread Starter
iTrader: (32)
 
Blown06's Avatar
 
Join Date: Apr 2006
Posts: 5,181
Likes: 0
Received 8 Likes on 8 Posts

Default

Ok, that takes care of the magnafuel side of the question. What about the 3 255's
Old 02-04-2011, 02:03 AM
  #12  
Launching!
iTrader: (9)
 
LS2Ttype's Avatar
 
Join Date: Aug 2010
Posts: 293
Likes: 0
Received 0 Likes on 0 Posts
Default

use a lonnies performance intank double pumper
Old 02-04-2011, 08:24 AM
  #13  
7 Second Club
iTrader: (7)
 
NicD's Avatar
 
Join Date: Nov 2001
Location: Chandler, AZ
Posts: 2,722
Received 283 Likes on 187 Posts

Default

Looks like a walbro 255 high pressure at 60 psi will move ~.85 gpm at 12V.
Old 02-04-2011, 08:51 AM
  #14  
LS1TECH Sponsor
iTrader: (16)
 
Lonnies Performance's Avatar
 
Join Date: Feb 2007
Location: Pittsburgh, PA
Posts: 2,662
Likes: 0
Received 2 Likes on 2 Posts

Default

A sweet spot for the Walbros is 13.5V @ 45psi. Typically you will see approx 60gph from them.

Last edited by Lonnies Performance; 02-04-2011 at 10:53 AM.
Old 02-04-2011, 09:04 AM
  #15  
7 Second Club
iTrader: (7)
 
NicD's Avatar
 
Join Date: Nov 2001
Location: Chandler, AZ
Posts: 2,722
Received 283 Likes on 187 Posts

Default

Originally Posted by Lonnies Performance
A sweet spot for the Walbros is 13.5V @ 45psi. Typically you will see approx 60gpm from them.
You mean gph right?
Old 02-04-2011, 09:18 AM
  #16  
TECH Fanatic
iTrader: (6)
 
1320's Avatar
 
Join Date: Dec 2001
Location: LV NV
Posts: 1,114
Likes: 0
Received 0 Likes on 0 Posts

Default

look almost even.

(3) walbro = 180 gph @45psi
and a 4303= about 170.......at 40psi

I love them walbros
Old 02-04-2011, 10:21 AM
  #17  
TECH Enthusiast
iTrader: (2)
 
Hank Peabody's Avatar
 
Join Date: Sep 2010
Location: Abilene TX
Posts: 667
Likes: 0
Received 14 Likes on 13 Posts

Default

Are the 4303s noisy? I have a Prostar 500 and that thing is super noisy, I cant imagine even 10 walbros being as noisy as it.
Old 02-04-2011, 10:53 AM
  #18  
LS1TECH Sponsor
iTrader: (16)
 
Lonnies Performance's Avatar
 
Join Date: Feb 2007
Location: Pittsburgh, PA
Posts: 2,662
Likes: 0
Received 2 Likes on 2 Posts

Default

Originally Posted by NicD
You mean gph right?
...yes. 60gpm would be a badass pump.
Old 10-21-2012, 11:49 PM
  #19  
TECH Enthusiast
iTrader: (47)
 
FasTimeSS's Avatar
 
Join Date: Jun 2008
Location: DFW
Posts: 741
Likes: 0
Received 1 Like on 1 Post

Default

i find this pretty interesting, has any one verified this? i just got rid of my 3 walbros to get a 4303......
Old 10-25-2012, 06:29 AM
  #20  
10 Second Club
iTrader: (33)
 
skinnies's Avatar
 
Join Date: Jul 2004
Location: KS
Posts: 2,431
Likes: 0
Received 4 Likes on 4 Posts

Default

How about real world testing? I know 3 walbros have done 1142rwhp I have seen, others have claimed 1200+ rwhp on e85. I was thinking the 4303 was running out way before this?


Quick Reply: 3 Walbro 255's vs. Magnafuel 4303



All times are GMT -5. The time now is 09:06 PM.