Fuel Tanks - Lateral-g Forums

Van B · #1 10-23-2009, 03:34 PM

Jody,

I remember reading that you thought the fuel heating problem you had on PT with the yellow Chevelle was due to running the fuel thru the hot engine compartment.

I set mine up with the regulator at the rear bypassing immediately to the tank. I have a Walbro 255 in a Rick's tank. I hope I don't run into any pump overheating problems as I plan to drive out to Columbus next summer (about 7 hours for me.)

Thoughts? Mark, Jody, Bueller, anyone?

**camcojb** · #2 10-23-2009, 04:51 PM

Quote:

Originally Posted by Van B

Jody,

I remember reading that you thought the fuel heating problem you had on PT with the yellow Chevelle was due to running the fuel thru the hot engine compartment.

I set mine up with the regulator at the rear bypassing immediately to the tank. I have a Walbro 255 in a Rick's tank. I hope I don't run into any pump overheating problems as I plan to drive out to Columbus next summer (about 7 hours for me.)

Thoughts? Mark, Jody, Bueller, anyone?

the fuel returning from the front mounted regulator was smoking hot due to a variety of reasons I'd guess; much bigger pump than required (A1000 Aeromotive), no pump controller to slow it down, fuel rails and engine compartment heating the rails, lines, and regulator, chrome plated intake and rails, etc. If you bypass at the rear it's not likely that the fuel will get warmed much at all. Mine is that way, and after driving 150 miles to Hot August Nights last year the stainless tank wasn't even warm.

Jody

Garage Dog 65 · #3 10-23-2009, 04:55 PM

I too would love to see a sketch of your solution Mark and Thanks for the info !

Jim

ccracin · #4 10-24-2009, 06:58 PM

Quote:

Originally Posted by Garage Dog 65

I too would love to see a sketch of your solution Mark and Thanks for the info !

Jim

I asked first!

How's that German Vette coming?

**GregWeld** · #5 10-24-2009, 10:46 PM

Okay -- Now I'm really confused!

I thought the whole purpose of having a bypass regulator was that the fuel was returning to the tank "continuously" -- keeping the pump running fuel - thus cooling it - and the large tank (in my case - 25 gallons) helping to act like a heat sink and cool the fuel.

I'm running the Aeromotive 1000 - externally - with an Aeromotive by-pass regulator.... I do not run a pump controller... it's just run by the Accel Gen 7... Fuel pump lead to a relay...

Are you saying that my fuel is getting "smoking hot" by the time it returns to the tank - and that I could have an overheating fuel pump??

**camcojb** · #6 10-24-2009, 11:32 PM

Quote:

Originally Posted by GregWeld

Okay -- Now I'm really confused!

I thought the whole purpose of having a bypass regulator was that the fuel was returning to the tank "continuously" -- keeping the pump running fuel - thus cooling it - and the large tank (in my case - 25 gallons) helping to act like a heat sink and cool the fuel.

I'm running the Aeromotive 1000 - externally - with an Aeromotive by-pass regulator.... I do not run a pump controller... it's just run by the Accel Gen 7... Fuel pump lead to a relay...

Are you saying that my fuel is getting "smoking hot" by the time it returns to the tank - and that I could have an overheating fuel pump??

where is the regulator?

**GregWeld** · #7 10-25-2009, 08:08 AM

Regulator is mounted on the firewall.

**camcojb** · #8 10-25-2009, 08:59 AM

Quote:

Originally Posted by GregWeld

Regulator is mounted on the firewall.

Is your regulator before or after the fuel rails? You'll get some heating of the fuel by going into the engine compartment, but probably not as much as going through the rails. We were fine for about 100 miles of steady driving. By 125-150 miles it had heated the fuel in the tank enough that the fuel pressure was dropping, pump was getting real loud due to aeration of the fuel from the heat. On Power Tour there were several other cars stuck on the side of the road or fighting the same symptoms. Most were not brand new builds, and had not ever had the issue before; but they had also never been driving 200-300 miles per day like you do on the Tour, so the short trips around town will probably never shows the issue.

Jody

Moose · #9 11-06-2009, 06:20 AM

ok.. I'm a little confused. I'm almost to the fuel system on my car and been doing research.

I've got a heads and cam LS1, should put down 450rwhp. I was going to run the rock valley tank, with a walbro 255 pump (intank). Was going to use a c5 fuel regulator mounted in back.

Now, I'm thinking I may have problems.. Am I over thinking this? I'd Rather spend extra money now and do it right first time.. suggestions..

I do mostly street driving, with some track time.. I'd like to get into autocross, but not on regular basis..

Bow Tie 67 · #10 11-06-2009, 07:34 AM

Quote:

Originally Posted by Moose

ok.. I'm a little confused. I'm almost to the fuel system on my car and been doing research.

I've got a heads and cam LS1, should put down 450rwhp. I was going to run the rock valley tank, with a walbro 255 pump (intank). Was going to use a c5 fuel regulator mounted in back.

Now, I'm thinking I may have problems.. Am I over thinking this? I'd Rather spend extra money now and do it right first time.. suggestions..

I do mostly street driving, with some track time.. I'd like to get into autocross, but not on regular basis..

I drive and race my car hard. It has a ricks tank with internal walbro pump and an external vette regulator. I can run down to 1/2 tank on track with race tires no problem. On the street I can go close to empty with no problems.

At Gingerman last June I started with a full tank and made it to the 3rd 20 min session when I started to feel the fuel starvation in extended cornering situations. My setup is currently 420 rwhp and will drop to roughly 6 mpg on the track.