Jet Pump on Return Line
Thread Starter
Teching In
Joined: Sep 2021
Posts: 4
Likes: 1
Jet Pump on Return Line Background on my new set up being built. I am wrapping up my build which consists of a LSA 416 Stroker, heads, cam and TVS2650 which will be fed on e85. I am planning on running twin walbro 450/LPH pumps in a modified truck fuel bucket with the umbrella valves so the fuel level in the bucket matches what is in the tank. The return will dump into the bucket to help it stay full. This is a street car but once completed I would like to do some 1/2mile and 1 mile racing for fun. I am worried the fuel bucket might drain to quickly in a 1 mile WOT pull so I started to look at solutions which led me to the Radium Engineering Jet Pump.
I have heard that having a restriction on the return side can cause issues controlling the fuel pressure with an external regulator but Radium does not mention this. They do say return line size and routing can affect performance and you may need to experiment a little. They do offer different size orifices to accomodat higher fuel demands but the largest one is still smaller than the -6an return line I will be running.
My questions:
Is anyone running the Radium Engineering jet pump in a similar set up and if so any issues with controlling fuel at WOT?
If you have experience with a different Jet pump to help keep the bucket full with out issues I would be interested in hearing about it?
Maybe a jet pump is not needed and I am over thinking it. Can anyone confirm this?
My thoughts:
I have some 5" aluminum tubing and have thought about building my own larger capacity fuel bucket I would just need to figure out how to integrate the umbrella valves into the base so the fuel level in the bucket is the same as the tank just like the truck bucket has. Someone on here did the same thing with success.
Since the 1/2mile and mile racing I will be doing is for fun I can just make sure the tank is at least half full which should suffice.
I have a GTO specific fuel cell now with a two speed fuel lab pump but I am constantly having issues with filling it and in some instances have accidentally overfilled it how I have no clue. So I was looking to go back to the stock tank for simplicity.
I considered a universal fuel cell but like the idea of the stock tank and filler. If this ends up being problematic I will consider going this route.
I have heard that having a restriction on the return side can cause issues controlling the fuel pressure with an external regulator but Radium does not mention this. They do say return line size and routing can affect performance and you may need to experiment a little. They do offer different size orifices to accomodat higher fuel demands but the largest one is still smaller than the -6an return line I will be running.
My questions:
Is anyone running the Radium Engineering jet pump in a similar set up and if so any issues with controlling fuel at WOT?
If you have experience with a different Jet pump to help keep the bucket full with out issues I would be interested in hearing about it?
Maybe a jet pump is not needed and I am over thinking it. Can anyone confirm this?
My thoughts:
I have some 5" aluminum tubing and have thought about building my own larger capacity fuel bucket I would just need to figure out how to integrate the umbrella valves into the base so the fuel level in the bucket is the same as the tank just like the truck bucket has. Someone on here did the same thing with success.
Since the 1/2mile and mile racing I will be doing is for fun I can just make sure the tank is at least half full which should suffice.
I have a GTO specific fuel cell now with a two speed fuel lab pump but I am constantly having issues with filling it and in some instances have accidentally overfilled it how I have no clue. So I was looking to go back to the stock tank for simplicity.
I considered a universal fuel cell but like the idea of the stock tank and filler. If this ends up being problematic I will consider going this route.
