Tanks Inc EFI Fuel System Install - Team Camaro Tech
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post #1 of 63 (permalink) Old Feb 1st, 14, 01:36 PM Thread Starter
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Tanks Inc EFI Fuel System Install

Tanks Inc Fuel Tank, Pump and Sending Unit. Approx $550 shipped

This is for the LS3 swap project I'm doing but is also good for any EFI system.

I have the same set up in my LS7 69 and have been very happy with it. It looks great, performs very well and is not crazy expensive to do.

The Tank has a baffled sump. Also shown is the pump and sending unit. Pump is a 255 Walbro





The 1st thing I do is mark the fittings on the fuel pump.



Next is to assemble the Fuel Pump assembly. Basically you shorten the supply and return tubes based on the chart in the instruction. This is based on the depth of the tank. One hose clamp and 2 cable straps. Put the sock on the bottom and you're done.



Drop the pump into the tank (with the rubber gasket) and snug it up.



Next. Assemble the Fuel Sending Unit. This is a universal 0/90 ohm sender so you will need to adjust it to fit based on the depth of the tank. Again you have good instructions.

Adjust the total height of the sending unit, adjust the rod length on the float. You will discard the lower piece and shorten the upper. On a 69 Camaro tank the adjustment slot does not go high enough to get a screw in. I simple put the screw in the lower hole then drilled a hole in the bracket for the upper screw. Install the float and adjsut the rod to the specified length and cut off the excess.





I like to test for empty and fuel reading before I bolt it in. Could save dropping the tank again.





Bolt it in and you're good. The one thing they don't tell you is the bolt pattern on the sender only allows it to go in one way. Loosen the 13mm nut on top and turn the mounting plate so that when the sender is installed the float is oriented towards the passenger side and the float rod is parallel to the front of the tank.



This is the Corvette C5 Fuel Filter/Pressure Regulator I like to use. It cost less then $40 and you can pick one up at your local parts house. Used on thousands of C5 Vettes for years. It will be mounted close to the tank. You then have 1 supply line to the fuel rail and a short return line.

3/8 line from the supply fitting on the tank. 3/8 line out to the fuel rail. and a 5/16 line that returns excess pressure to the tank.

The fittings shown attach to the fuel filter and give you 6AN. You can used 3/8 fuel line of your choice to run to the tank and fuel rails.

The fittings are cool 2 piece that push on and are secured with the U-nut. so you don't have to use any fuel line tools. Russell makes these.

I use the Braided Nylon lines but you can use 3/8 line you want.

The vent line will go to the rollover valve mount under the car above the full level of the tank.




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post #2 of 63 (permalink) Old Feb 1st, 14, 02:05 PM
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Re: Tanks Inc EFI Fuel System Install

Very interesting, looks good. Keep em coming!

And this too shall pass.

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post #3 of 63 (permalink) Old Feb 1st, 14, 02:51 PM
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Re: Tanks Inc EFI Fuel System Install

John - I'm a bit ignorant on EFI never having used one on a first gen, so this may sound like a stupid question but what is a roll over valve and how or what does it do with the vapor?

Brian


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post #4 of 63 (permalink) Old Feb 1st, 14, 03:16 PM
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Re: Tanks Inc EFI Fuel System Install

Quote:
Originally Posted by 69-Pace View Post
John - I'm a bit ignorant on EFI never having used one on a first gen, so this may sound like a stupid question but what is a roll over valve and how or what does it do with the vapor?

Brian
A "roll over valve" prevents fuel from exiting the fuel tank in the event of a vehicle roll over. Under normal operation, it allows the fuel tank vapors to vent to atmosphere, normalizing tank pressure. It basically serves as a vent for the fuel tank, until the valve is triggered by a roll over event, then it stops fuel from leaking from that vent.

BE different....ACT normal.

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post #5 of 63 (permalink) Old Feb 1st, 14, 03:38 PM
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Re: Tanks Inc EFI Fuel System Install

Ah got it - Thanks Maurice


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post #6 of 63 (permalink) Old Feb 1st, 14, 04:44 PM Thread Starter
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Re: Tanks Inc EFI Fuel System Install

Quote:
Originally Posted by 68zz502fi View Post
A "roll over valve" prevents fuel from exiting the fuel tank in the event of a vehicle roll over. Under normal operation, it allows the fuel tank vapors to vent to atmosphere, normalizing tank pressure. It basically serves as a vent for the fuel tank, until the valve is triggered by a roll over event, then it stops fuel from leaking from that vent.
And I hope I never get to use it.

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post #7 of 63 (permalink) Old Feb 3rd, 14, 02:22 PM
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Re: Tanks Inc EFI Fuel System Install

That's genius! I just ordered the same tank and pump last week. Will be here soon. I am using a 91 Z-28 motor with TPI. Do you think the C5 filter/pressure regulator would work fine for that? Your setup saves having to add an extra fuel line forward and makes the engine bay a lot cleaner also.

Pete
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post #8 of 63 (permalink) Old Feb 3rd, 14, 06:26 PM Thread Starter
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Re: Tanks Inc EFI Fuel System Install

Quote:
Originally Posted by Stingry View Post
That's genius! I just ordered the same tank and pump last week. Will be here soon. I am using a 91 Z-28 motor with TPI. Do you think the C5 filter/pressure regulator would work fine for that? Your setup saves having to add an extra fuel line forward and makes the engine bay a lot cleaner also.

Pete
What fuel pressure are you looking for? This set up runs approx 55 psi and I thing the TPI is 47. It should work fine.

Returning the fuel before it gets to the engine bay also keeps the fuel in the tank cooler.

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post #9 of 63 (permalink) Old Feb 4th, 14, 04:17 AM
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Re: Tanks Inc EFI Fuel System Install

I will be running the stock TPI, in fact it is a completely stock 1991 Z-28 engine. The pressure is lower, about 42ish psi.

Thanks,

Pete
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post #10 of 63 (permalink) Old Feb 5th, 14, 07:24 AM
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Re: Tanks Inc EFI Fuel System Install

This is a good, helpful & practical post. This is the kind of post that helps other guys out. Plus, it’s just plain interesting to see.
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post #11 of 63 (permalink) Old Feb 5th, 14, 07:46 AM
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Re: Tanks Inc EFI Fuel System Install

Doing my Tank Inc. right now…good advice on the fuel sender adjustment Did you use any sealing compound on the screws used to install pump and sender?

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post #12 of 63 (permalink) Old Feb 5th, 14, 07:56 AM Thread Starter
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Re: Tanks Inc EFI Fuel System Install

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Originally Posted by dondb View Post
Doing my Tank Inc. right now…good advice on the fuel sender adjustment Did you use any sealing compound on the screws used to install pump and sender?
The instructions suggest a sealer on the rubber gasket. The screws have o-rings on them and it's a good rubber gasket on both the pump and sender.

I do not see a need for any sealer. Done a few this way and never had a leak.

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post #13 of 63 (permalink) Old Feb 5th, 14, 08:14 AM
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Re: Tanks Inc EFI Fuel System Install

Same setup and regulator in my '69.
Works great for an LS setup.

I did use some sealer on both sides of the rubber gaskets just to be sure.

The only thing I would suggest BEFORE you put the tank in the car is to hook up your fuel gauge and test it to see just how accurate the tank assembly and your chosen fuel gauge are. I put the fuel sender assembly together to the T, and I'm not picking up as much fuel from the tank as I'd like. Its leaving close to 4 gallons in the tank when the gauge is at 8% (1.4gal.).
8% is where I'd expect to run out, and I did, but not with 3.5-4 gallons still in the tank.
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post #14 of 63 (permalink) Old Feb 5th, 14, 08:37 AM Thread Starter
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Re: Tanks Inc EFI Fuel System Install

Quote:
Originally Posted by HwyStarJoe View Post
Same setup and regulator in my '69.
Works great for an LS setup.

I did use some sealer on both sides of the rubber gaskets just to be sure.

The only thing I would suggest BEFORE you put the tank in the car is to hook up your fuel gauge and test it to see just how accurate the tank assembly and your chosen fuel gauge are. I put the fuel sender assembly together to the T, and I'm not picking up as much fuel from the tank as I'd like. Its leaving close to 4 gallons in the tank when the gauge is at 8% (1.4gal.).
8% is where I'd expect to run out, and I did, but not with 3.5-4 gallons still in the tank.
How close is your fuel pick up to the bottom of the tank?

For gauge accuracy I add fuel 1 gal at a time and then check the gauge reading (with the tank installed)

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post #15 of 63 (permalink) Old Feb 5th, 14, 09:07 AM
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Re: Tanks Inc EFI Fuel System Install

Whatever the prescribed length is called out in the instructions John.
You know... measure 6 times, cut once? I didn't want to have to drop the tank.
I even eyeballed the float to the end of the pickup, simulating with my eyes where fuel would be, and start to move the float.
I made 100% sure the sender worked from 0-90 Ohms and then checked it again. And then messed with it again just before stuffing it in the tank.

When the gauge says 8% (1.4gal.), I know it's only a matter of seconds before the engine quits. I can't stuff more than 14-15 gallons in at that point.
I realize there's a small reserve, but it's leaving 3-4 gallons... 1.6-2.6 more than I'd expect.
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