Walbro GRJ420 Overstock Sale
02-19-2010, 06:55 PM
#1
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Walbro GRJ420 Overstock Sale
We have had these on the shelf for a while and need to move them normal price is $198.98 we have them on sale for $140 shipped. These are genuine Walbro GRJ420P's.
Call Email or PM
818 574 3835
sales@highflowfuel.com
Call Email or PM
818 574 3835
sales@highflowfuel.com
Last edited by Matt@HighFlow; 02-19-2010 at 07:00 PM.
02-19-2010, 11:21 PM
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LPE used to have an exclusive deal on this pumps with walbro but they were not selling enough so Walbro started selling to all of their distributors. As the quote that I pulled from another post the GRJ420P and a KB BAP was enough for 707 hp
02-20-2010, 04:02 AM
#7
Race Director
How much more fuel does this deliver over a stock pump (2001) ?
02-24-2010, 03:25 PM
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I got no where with walbro today they just say its a GRJ420P pump inside the housing which I would assume its not.. I am not about to cut one of these open lol so I am going to assume they have the typical GM 255lph pump the F-20000-169 here is the flow data for that.
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Last edited by Matt@HighFlow; 02-24-2010 at 04:25 PM.
02-24-2010, 03:57 PM
#15
Race Director
Your test results seem strange ?
More pressure, less fuel volume and less HP support ?
If you're using the same size line and increase the pressure, it would seem to me that it would pump out more fuel until you exceed the pipe diameters ability to increase the volume of fuel.
According to your chart @60PSI this pump only supports 435 BHP, that seems to be the same as a stock pump or maybe less.
Can you please explain this ?
More pressure, less fuel volume and less HP support ?
If you're using the same size line and increase the pressure, it would seem to me that it would pump out more fuel until you exceed the pipe diameters ability to increase the volume of fuel.
According to your chart @60PSI this pump only supports 435 BHP, that seems to be the same as a stock pump or maybe less.
Can you please explain this ?
02-24-2010, 04:33 PM
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Okay so I took apart one of the modules a few minutes ago and Walbro was right it is a specific pump for that module. It appears to be the same as a GCA761-2 which is the neon srt-4 255lph fuel pump. I need to send a few other pumps down to RC for flow testing so I am going to go on ahead and send the grj420 pump out of the module so I can get a flow chart for that pump. Test results will take about a week to get back.
As far as the F20000-169 pump goes that is the under achiever out of all the walbro 255lph pumps. If you want to start a separate tech thread on the fuel pumps I have flow data for all the walbros along with flow data for our proprietary 255lph fuel pumps. I can also post up pics of the insides of the walbro pumps to better explain why the pressure drops off at higher PSI.
As far as the F20000-169 pump goes that is the under achiever out of all the walbro 255lph pumps. If you want to start a separate tech thread on the fuel pumps I have flow data for all the walbros along with flow data for our proprietary 255lph fuel pumps. I can also post up pics of the insides of the walbro pumps to better explain why the pressure drops off at higher PSI.
