I didn't want to post in Terry's thread so I decided to make my own.

Here is my idea. Lets hear your objections....

My fuel surge tank will be located in the trunk where the spare tire used to be. It will consist of a 1/4" aluminum board. On the board will be mounted the surge can and 2 Edelbrock quiet flow 80gph pumps for redundancy with a y connection feeding the CJM hard pipe. The aluminum board will be bolted to the floor of the trunk.

I found a nice surge tank on e-bay for a descent price. They offer a 2 ltr and a 4 ltr.

5" X5" X5" 2 ltr $125 shipped



5" X 5" X 10" 4 ltr $135 shipped



Any suggestions on the 2 or 4 liter tanks? I am thinking 4 liter. Can the system handle the flow of 2 pumps? Any other suggestions?

 

You could have posted in my thread. Not a problem.

Those look pretty good. I like the top one better because there is not much room for the fuel to slosh to one side.

I view this forum as a great place to exchange ideas. The more ideas, the better.

 

Some people are touchy about posting in their threads.

You think 2 ltrs is enough fuel?

 

RE 2 liters: I think so, and the prices of these are very reasonable (production vs. a 1 off custom). I still keep my spare tire, but had I seen these before I started my swirl tank project, I probably would have purchased the one shown in the first picture and put it in my trunk.

The reason I was trying to get other people on board with mine was to be able to build a lot at one time and negotiate a volume discount. That didn't happen because there was not enough interest. Nonetheless, I have tied up enough of Paul's time that I am going to commence with my project with him. I also like the idea of having the swirl tank external so that I don't have to dedicate trunk space to it, but I already have my meth tank in there so it is not really that big of an issue.

RE posting in my thread: more knowledge shared with the community is always the better!!! I actually would like to see this combined with my thread because you have presented an option that I wish I would have found before proceeding. I searched for swirl tanks before I decided to do a custom one, but did not come accross these.

 

Mods.... feel free to merge!

 

Hey Jet whats the reason for the 2 Edlebrock pumps? Wouldnt one walbro 255 pump in the main tank and one edlebrock pump on the surge tank be enough? The walbro feeds 255lph and the edlebrock feeds 302lph per pump. So that will be over 600lph for both pumps. Do you think thats a little much?

 

+1 just the one pump off the ext can will be great unless you're gonna crank more boost

 

OK.... I'll run one of those SX/Edelbrock Quietflow pumps.

 

This is the fuel surge tank on the JUN AWD TT 350Z...

 

Thats a nice *** setup. But does it have to take up that much space? Possible to consolidate it all?

 

Trying to figure out why 3 leads going into the swirl tank in the picture above?
1 - from the in tank pump (main feed)
2 - from the fuel return?
3 - ??? Maybe a second in tank pump?

Overall a clean setup.

 

Overflow?

 

Jet, I dont know how much power you make at the track but are you over 700whp? if not the single quiet flow should suffice. Heres an old pic of whats in project "Blue Basterd" 240sx, something similar to what I think you want to do?




Its an older design but works very very well, if you have any questions on surge tank design I think I can give some pointers. as for volume I think you asked, 2ltr's should be enough for you, the 240sx is a 2liter tank(630whp) and we have never ever had a problem with it with repeated back to "test track" pulls to 160mph.

good luck man, still thinking of selling the car?? seems like a no, Hah!

Edit: just had to say Dual 044's FTW! on that JUN car.

 

Jet,
That should work.
This is a similar idea to what lots of road course fuel cell's are.
Again I will relate from my experience with the GT3 cup car. We were forced to install a fuel cell by SCCA (later they allowed the factory fuel tank agggh).

But the cell had a "surge tank" that was probably 1/2-3/4 gallon (so 3-5L). Because of the location of the tank we had lots of starvation problems at first with the aftermarket cell vs the stock tank (especially at low fuel level...duh). The stock tank has a sort of Sump location where the pumps (2 pumps) sat, and worked great. The Cell was much more rectangular and even with that meshy foam baffeling had fuel pool-up in the corners of the cell. We ultimately ran 4 pumps in the cell and 1 in that surge tank area. the one in the surge tank obviously fed the motor directly, and the other 4 just dumped fuel into the surge tank....and as the tank filled it just overflowed back into the cell.

The only disadvantage for us was due to the 4 pumps running virtually constantly, and not always being cooled by adequate fuel flow we were replacing those pumps often. But thats ok, we just ran a cheaper pump in the cell and a high quality walbro in the surge tank.

Sorry for the long-winded reply.

Tom

 

Thanks for your input guys. I ordered my stuff and I should have it installed in a few weeks. I went with the 2 ltr tank.

 

I could build a surge can that mounts in the passenger side of the tank but the largest capacity it could be would be like 1.5 - 1.6 liters. It would be easy to alter the twin pump setup into that

 

I already ordered all of my parts, but I really like this idea!!!

 

I LOVE the idea but wouldnt that mean that the feed for the external pump would require vacuum & vacuum tube to draw the fuel? Since the can would only be accessible from the top right? And pumps like the sx and A1000 dont like to draw fuel at all, they require gravity feed for any sort of longevity, and they sound like cement mixers when they cavitate.

I sincerely apologize if I visualized the concept wrong.

 

Just to confirm:

The surge tank is only really necessary if the car is being tracked and has 550+whp?

Jet is now keeping the Z?

 

They don't draw nearly as well as they push, but as long as you can get the pump close to the tank you'd be alright.....and please got put a rubber isolator between the pump and the frame (or whatever you mount it too).

tom