Anyone know what the GPH of the stock fuel pump is? I will be needing an external fuel pump. Ive been looking at jk specific ones and they vary from 43 gph to 125 gph. Even on Autozone im not finding a fuel pump for the jk. I just need to know the ballpark gph so i can make sure the external pump for my fuel cell will provide enough. Fuel pumps are not my expertise at all, but I am learning a bit on these.

 

I would think most any electric fuel pump will be enough flow for the JK.
What's the most you will burn in an hour? 10 mpg is 6 gph at 60 mph.

Pressure is more important. The OEM pump is regulated to 58 psi +/- 2 psi.

What are your plans with the fuel cell?

 

Perfect, i figured youd be the one to help me out. I will look into the pressure then. Whats the consequences of running a slightly higher/lower psi? If i cant find exact is there a better side to error on? I appreciate your help.

 

If you go too far plus or minus, the computer may not be able to compensate for the different flow rate through the injectors. And, the spray pattern/atomization may not be satisfactory.
I have no idea what pressure would be too high or too low.

 

Ok sounds good ill see what i find. Im sure theres one out there. I believe Carolina truggies used one so i can always ask them if i cant find one

 

LS1 Complete Fuel Delivery Kit - Speedway Motors, America's Oldest Speed Shop

this looks perfect.

MSD 2225 In-Line Hi-Pressure Fuel Pump - Speedway Motors, America's Oldest Speed Shop

but when i look up just the pump this is the specs.

From what i can see the kit has a regulator that keeps the psi stable where i would need it correct? But wouldnt the psi very depending on rpms/ the need for gas?

 

little bump to make sure i got that right?

 

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