Background info:
I have a Formula that I am putting all of my 86 Aero body parts on.
already cleaned up and painted the 86 tank and put the ep381 fuel pump in.

dropped the 88 formula gas tank, good be cleaned outside, but inside is fine, fuel pump works fine.


Now, I have seen the 84-87 had a 10 gallon tank, and the 88s had an 11 gallon tank.
with the two side-by-side, they are almost identical, but definitely different.

If I take the sending unit, float, etc, from the 86 and put it in the 88 tank, will it read close enough?

What if I just put the 86 tank and sending unit in the 88 with the 88 gauges?

I wouldn't mind an extra gallon of fuel, but the 86 is already finished and would literally just need to be hooked up, instead
of cleaning and painting the 88 tank, swapping the fuel pump over to the 88 sending unit, etc...

There is the issue of the expansion tank to consider. The 88 has an extra tank in the fender next to the battery, and that is the biggest reason why the main tank has a larger capacity. You can use the sender and gauges from either car....nothing is that accurate that will make any difference....but you should make sure to hook up the expansion tank properly, so the extra lines need to be there.

I have a picture of the expansion tank....ignore the text...that was for another problem.

related threads:

https://www.fiero.nl/forum/A...070315-2-075583.html

https://www.fiero.nl/forum/A...050818-1-049946.html

I would think the sender would read close enough, they arent the greatest most times anyway

[This message has been edited by 2.5 (edited 06-17-2015).]

I removed my expansion tank when I swapped over my body panels.

Not only will I have a vented gas cap, but I think I will be fine without it.
Please no one say "You will have issues/problems/hazards without it!" I've done the research, your words would fall on deaf ears.

Thank you for the comments. I think I will end up cleaning the 88 tank and using the 86 sending unit.

Kurt you might get more info and suggestions if you post this in the technical questions area. Just tryin' to help.
Louis

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===Always trying to find time to work on cars===
Louis Duet
Baldwin, Long Island, NY
"My mind spins like helicopter blades." -G. Rossdale
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"Blue" <= '85 Fiero GT
3800sc series 2 swap in progress--IT'S ALIVE !!!!!
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"Boo" <= '81 Delorean DMC-12
VIN #5835
Stock PRV engine
Peugot 604 Intake manifold
Exhaust headers
Anti-3rd brake light