Well since my fuel sys is not as good as it could be, I decided to upgrade it a little bit. I got some .070" 6061-T6 aluminum and made a surge tank, that will be located in the battery tray. Then ill have my walbro 255lph still in the tank, pushing fuel to the surge tank, then from there the bottom fitting will go to a Aeromotive external fuel pump and then to the fuel rail. The return from the FPR will go back to the surge tank and if there is anything else that need to be returned to the tank will be done so by the third line on top.

Here are some picks.

 

I've never seen this before. How is it beneficial?

 

this is benifecial in that if you have fuel starve during cornering or under heavy acceleration then this small fuel tank will be able to keep fuel flowing to the motor. although i would think a little reinforcment just in case you getin an accident. don't want fuel all over the place.

 

looks cool. although i thought the stock baffleing in the tank was pretty decent

 

like "tec_wiz" said, it helps eliminate the chance of fuel starvation. The surge tank is keept full at all times so there is no air in it, that way gas does not move arownd.

same idea as having a full tank of gas at all times.

 

Can you post pics of the engine bay and where all the lines go to?

Are you running steel braid back to the tank or just the fuel filter?

 

for now im going to run a braided line from the fuel filter to the surge tank.

oem tank -> oem filter -> surge tank -> fuel rail -> FPR -> surge tank -> return to oem tank

 

Is there a part number or size for the aeromotive pump you're using? I would like to do this in my civic.

Thanks


Modified by essex at 8:53 PM 1/7/2006

 

I have not decided on what pump to use yet. They have two or three different pumps. From 600 hp to 1200 hp. I belive that the "Elliminator" is the biggest pump they have and the one im thinking of using.

 

nice fab work on the tank

 

Maybe I'm missing something here, but won't you be loosing line pressure if you have a line coming off of the surge tank back to the stock fuel tank as a return? I think the only return line going to the stock tank would be one coming out of the return side of the regulator.

 

good thinking Work on those aluminum welds but looking pretty hot from down here in southern washington

Keep up the good work...car looks great.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91TSiGuy &raquo;</TD></TR><TR><TD CLASS="quote">Maybe I'm missing something here, but won't you be loosing line pressure if you have a line coming off of the surge tank back to the stock fuel tank as a return? I think the only return line going to the stock tank would be one coming out of the return side of the regulator.</TD></TR></TABLE>

Im not going to have any pressure in the surge tank. What im going to do, is run an external fuel pump, between the surge tank and fuel rail. That way the only lines that have 40psi in them are the ones between external fuel pump and FPR.

 

Very innovative! The only question I have is, will the walbro 255 LPH keep up with this set-up? Obviously, the external Aeromotive pump will put out more volume. On this set-up, the only purpose of the walbro 255 LPH is to keep the surge tank filled up.

Also, dont you think that having the "unburnt" fuel going back to the surge tank first will initiate a some sort of pressure also, although it would eventually go back to the stock fuel tank?

Nice work man!

 

it shouldn't cause any pressure in the tank. because it will always have a way out. Back to the big tank. here is a diagram drawn out by sds

http://www.sdsefi.com/techsurge.htm

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thermal &raquo;</TD></TR><TR><TD CLASS="quote">Very innovative! The only question I have is, will the walbro 255 LPH keep up with this set-up? Obviously, the external Aeromotive pump will put out more volume. On this set-up, the only purpose of the walbro 255 LPH is to keep the surge tank filled up.

Also, dont you think that having the "unburnt" fuel going back to the surge tank first will initiate a some sort of pressure also, although it would eventually go back to the stock fuel tank?

Nice work man! </TD></TR></TABLE>

Well I figured that the Walbro 255 was doing ok with being the only one in the system, so it should have no problem keeping the surge tank full. And the Aeromotive pump will only put out constant flow to the injectors and the FPR will route back any unused fuel to the surge tank that will also help keep it full at all times.

The only time I will have to make sure that its full, is when I first install it. And then all I have to do is prime the system a few times and that should take care of it.

As for some of the safety issues that some of you have showed concern, I think it will be ok with having the tank in place of the battery. Most of the surge tanks usually sit right above the fuel tank inside the car. So by not having it there I think that is even safer.

And if you think about it, all the race cars that I know, have their fuel cell in the engine bay next to the front tire.

 

Good stuff for sure! I may consider something similar to this on my set-up.

Do you happen to have a picture on how you routed the return line from the surge tank to the stock tank? If possible, I'd like to see the modification you made to get the bigger hose back to the stock tank. Thanks!

 

what if the tank over fills?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16hybridsol &raquo;</TD></TR><TR><TD CLASS="quote">what if the tank over fills?</TD></TR></TABLE>

I don't mean to be an ***, but all you have to do is read.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by onefstek &raquo;</TD></TR><TR><TD CLASS="quote">

I don't mean to be an ***, but all you have to do is read. </TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by onefstek &raquo;</TD></TR><TR><TD CLASS="quote">

Well I figured that the Walbro 255 was doing ok with being the only one in the system, so it should have no problem keeping the surge tank full. And the Aeromotive pump will only put out constant flow to the injectors and the FPR will route back any unused fuel to the surge tank that will also help keep it full at all times.

The only time I will have to make sure that its full, is when I first install it. And then all I have to do is prime the system a few times and that should take care of it.

As for some of the safety issues that some of you have showed concern, I think it will be ok with having the tank in place of the battery. Most of the surge tanks usually sit right above the fuel tank inside the car. So by not having it there I think that is even safer.

And if you think about it, all the race cars that I know, have their fuel cell in the engine bay next to the front tire. </TD></TR></TABLE>

i over read the other posts and saw this one

 

ha ha, no biggie.

 

i'll try one out for ya

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by onefstek &raquo;</TD></TR><TR><TD CLASS="quote">
As for some of the safety issues that some of you have showed concern, I think it will be ok with having the tank in place of the battery. Most of the surge tanks usually sit right above the fuel tank inside the car. So by not having it there I think that is even safer.

And if you think about it, all the race cars that I know, have their fuel cell in the engine bay next to the front tire. </TD></TR></TABLE>

Yup, I rather have the fuel tank farthest possible from you. If that **** blows, you want it outside, not inside the cabin. By the wheel is a good idea for drag race cars, due to impact absorbtion if that **** ever blows, the wheel is a good wall for you.

Looks good though. Tempting

 

LOOKS GOOD

 

Damn, I wanted to make one of these for my car.....

Damn CRX's have **** for room under the hood