Springfield Flyer.

[SPARKY]

Timely---I was at a fellow LSR guys shop today---his fuel tank had a nice square hole in it and he had a baffle he was working on:

--he had "apparently" experienced his acceleration moving the fuel back to the point it was blocking his vent--

he had not decided where he was going with a 3/4 or a 5/8 vent line---he had a 5/8 check valve set up that he had made but hadn't installed yet

[tauruck]

Hi Sparky, I've put both the vent and return lines at the front of the lid just off centre.
I figure that by the end of the run the fuel level should be pretty low thus keeping the juice
away from the vent.

I have a small deflector around the vent for added insurance.

I kept the fittings near the centre so that I wouldn't have body work clearance issues in the future.

[wobblywalrus]

2055 is a tool steel, I am pretty sure.  Mike, you have the word's strongest gas tank.

[tauruck]

http://www.sandmeyersteel.com/2205.html

Alloy 2205 (UNS S32305/S31803) is a 22% chromium, 3% molybdenum, 5-6% nickel, nitrogen alloyed duplex stainless steel plate with high general, localized, and stress corrosion resistance properties in addition to high strength and excellent impact toughness.

Alloy 2205 duplex stainless steel plate provides pitting and crevice corrosion resistance superior to 316L or 317L austenitic stainless steels in almost all corrosive media. It also has high corrosion and erosion fatigue properties as well as lower thermal expansion and higher thermal conductivity than austenitic.

This is what I just found. Not sure why Latham Engineering made the tank from the other material and the lid from the above
but now that we've drilled and cut all the appropriate openings I'm good with it.

It is a pretty heavy plate.
Thanks Bo.

[Buickguy3]

    It'll be good protection from the assasins in the neighborhood. 

       Doug 

[tauruck]

Hey Doug, I'm "the" guy!!!!. Shhhh.

Still working the gas tank lid.

Got the plate drilled on the press no problem.
I went up to a 22mm bit to install the -10 fitting for the return.
Using the hand drill is useless.

Pics of the first pilot hole and the fittings pulled down for welding.

[tauruck]

I cleaned the area to be welded and the hex parts of the fittings
with some special fan grinder from Klingspor.

Good materials make your work so much better.

I wasn't quite happy using the 2,4mm electrode after welding the
bungs so I changed it for the smaller size.

[tauruck]

While the lid was cooling I fried in the three fuel outlets.
I put in one extra for "in case"!.

[fordboy628]

I put in one extra for "in case"!.

A good plan prepares for the "unexpected" . . . . . .

 
Fordboy

[tauruck]

The next task was to install a pipe for the return.
I had some old stuff from the Mazda Rotary that was still in good shape
so I cut off one elbow.

After thoroughly cleaning the hose I used some Loctite on the threads
and cinched the fitting. It points to the back of the tank.

I then fashioned up a holder from some stainless steel plate.  

[tauruck]

I forgot to take a pic of my weld but it all went well.

I fabricated a baffle for the vent. It sits slightly off the wall of the tank
and there's enough for the air to escape.

[tauruck]

The last pic isn't very good but if you look
closely you can see the vent.

The lid is part welded to the box and I should have pics later.

[fordboy628]

Very nice and very classy work Mike.

Maybe Neil will let you work on his car . . . . . . . . . . .

 
Fordboy

[SPARKY]

When, I first started with EFI on my BBC I had an old Holley system that we put a bigger pump on---it could not by pass enough fuel at idle---we were too rich until we got under load and above 4000 rpm as time went on we moved to a mechanical pump (at Dynoroom's suggestion) with much lager lines and much larger returns that we control at the tank

[manta22]

Very nice and very classy work Mike.

Maybe Neil will let you work on his car . . . . . . . . . . .

 
Fordboy

I sure could use the help of such a talented fabricator as Mike!

Regards, Neil  Tucson, AZ