Ran out of gas

[Mike]

I've known for some time that when the fuel gauge shows a quarter tank that I can get about 10-12 gals max in it. The plan this morning as I left the garage at 6am was to run it on down to empty and see what the gauge behavior is. Unfortunately, I failed to consider that I had driven it to Cars & Coffee and then around a little last weekend and started off then right under a quarter. I had planned on making an early morning run up Clear Creek Canyon this morning with the GoPro but alas made it about 10 miles before it coughed once and that was all she wrote. Fortunately, I nice lady cop showed up and helped me roll it off the highway and into an empty lot while I wait for reinforcements. I did snap a couple pics as I waited. I gotta figure out a better fuel gauge setup than stock. Any suggestions?

 

[Jim Cowden]

You should have used the pumps to empty her out.
My 40 is inconsistant in the fuel gauge as well.
I think the long tanks and fuel movement.

Jim

 

[Mike]

It was empty empty. I got 19.7 gallons back in it. I guess I will start watching the odometer.

 

[Larry L.]

'Simplier solution: Treat the 'half full' mark as though it were the 'empty' mark. You'll never run out of gas again...as long as the darn gauge is accurate at that stage.

 

[Jim Craik]

Yes, mine stops just before 1/4 tank, I learned that the first day. I was on US 80 outside Sacramento, it just quit, but I will say that 2264 is a good roller, it continued on for quite some distance, off an exit and right into a gass station.

 

[DaveM]

This was covered in a previous thread:
http://www.gt40s.com/forum/superformance-gt40s/34109-notes-fuel-level-sender-calibration.html

On level ground the last 3 gal. (1.5gal each side) cannot be used. I never run mine under 1/4 on the gauge.

 

[Erich]

...at least you took a couple of awesome shots! The lighting and background are perfect! :thumbsup:

 

[Randy V]

...at least you took a couple of awesome shots! The lighting and background are perfect! :thumbsup:

I'll second that!!!

 

[Kevin L]

Agree, 1/4 and that is about all she has. Mine has started coughing right around there but I never get more than 15 gallons in it at fill-up.

Kevin

 

[René]

lovely shots...

I would hate inaccurate fuel gauge's
redesign the tanks that way that they have a deeper collect pickup point?
but I guess there are no easy solutions.

 

[Pete]

I'm curious as to why the fuel tanks aren't designed to have a sump in the center length wise for the pickup tube.The floor of the tank can be ramped from either end to the center say with a 2 inch offset. Wouldn't that help the fuel feed situation on hills? I realize that would mean sacrificing some fuel capacity. Thoughts?


Pete

 

[DaveM]

I'm curious as to why the fuel tanks aren't designed to have a sump in the center length wise for the pickup tube.The floor of the tank can be ramped from either end to the center say with a 2 inch offset. Wouldn't that help the fuel feed situation on hills? I realize that would mean sacrificing some fuel capacity. Thoughts?


Pete

Not using the last 1.5 gal of an 11 gal tank hasn't really been a problem for me. That still leaves 19 useable gal with 2 tanks. At 18mpg highway that still gives over 300 miles per fillup. I believe the tanks have some baffling to minimize full starvation on hills. If we were doing LeMans I might be concerned, but we'd be talking rubber fuel cells anyway.

 

[René]

I came across this website thanks for someone pointing it out when I found the aluminium welds on his fuel-tank so lovely done.

then I noticed their concept of fuel-tanks and it sounds pretty good, not have any experience with such but by the sound of it it looks "good"

most of all they do some amazing stuff with alu items and their welds and finishing of items look really cool.

a small part of the tanks talk>>

What are the internal collectors for inside some of our fuel tanks?
Our internal collectors are a fabricated box which has check valves mounted in the side faces. These check valves allow fuel to run into the collector but not out, so as the vehicle corners, brakes and accelerates the fuel is scooped into the collector through the check valves, this ensures that the collector is constantly full, even when the tank is almost out of fuel. This means that you are able to utilize almost the entire volume of the fuel tank without suffering from surge and pick-up problems, and can often remove the necessity for an external fuel swirl pot.

Pro Alloy Motorsport - Specialist alloy components - Bespoke alloy fuel tanks

but also look under custom products say like this>>

Pro Alloy Motorsport - Specialist alloy components - Bespoke Alloy Water Radiators

:heart:

 

[Gabriel Von Wahl]

You should run out of gas more often if you keep posting pant wetting shots like that

My god man. Breathtaking.

 

[Tony Hunt]

but also look under custom products say like this
Pro Alloy Motorsport - Specialist alloy components - Bespoke Alloy Water Radiators
:heart:

I have one of their radiators. It's a thing of beauty and a joy to behold. Very strong too.

 

[Dave Hood]

When I fill my car at the 1/2 mark, I usually get about 10 gallons. Doing that also lessens the pain since the $$ on the pump doesn't look so bad...

 

[Mike]

You should run out of gas more often if you keep posting pant wetting shots like that

My god man. Breathtaking.

Thank you. I love cars and photography.

 

[Seymour Snerd]

This was covered in a previous thread:
http://www.gt40s.com/forum/superformance-gt40s/34109-notes-fuel-level-sender-calibration.html.

As the thread above makes clear, the supplied fuel level sender is a joke. I finally gave up on the idea of "recalibrating" the original (even though I'd done all the hard work) and purchased solid-state "capacitative" senders from Centroid after sending them my gauge's resistance map.

Reading - Ohms
E -170
¼ - 75
½ - 47
¾ - 28
F - 13

I suggest you do the same. Messing with the original is the kind of waste of time that keeps your car off the road for no good reason.

 

[Seymour Snerd]

I'm curious as to why the fuel tanks aren't designed to have a sump in the center length wise for the pickup tube.The floor of the tank can be ramped from either end to the center say with a 2 inch offset. Wouldn't that help the fuel feed situation on hills? I realize that would mean sacrificing some fuel capacity.

The tank has to slide into the front of the sponson and through the sponson ribs, which thus establishes the maximum cross-section of the tank. So there can't be a sump in the center without drastically reducing the tank capacity. A rear-ward swinging trap-door at the rear of the tank would solve the problem, as would having one of the tanks feed from the front.

 

[Jon Briggs]

That top picture is just fantastic. Its now my desk top background (if you don't mind?). If you take pictures like that, you need to run out of gas more often!