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Old 06-09-2019, 01:58 AM
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Best option for replacement fuel tank ('72 Riviera)

Hello!

I bought a '72 Buick Riviera, which isn't running yet. I bought a Holley Sniper EFI to install next weekend. Upon closer inspection, my gas tank is rusted to heck (about 10 quarter-sized bubbles, and one already leaking and the inside of the tank is very rusty).

'72 Riviera's have almost no aftermarket, so I am stuck with the options below:
1) See if a radiator shop can save my tank (questionable)
2) Buy a 72 Buick Centurion tank (why the F is this available but a Riviera is not??) and relocate the filler tube.
3) Get a Holley Sniper EFI Fuel Tank (twice the price of other options, and I already bought an external fuel pump, AND they don't make one specific for the Riviera).

Does anyone have a better idea? It is intended to be a daily driver car, so a fuel cell in the trunk isn't going to work. Is there some sort of new polymer tank I should be looking at instead?

Thank you!!

p.s. Extra points if you can tell me which electronic distribution system can be controlled by the Holley Sniper EFI -and- is compatible with a Buick 455.

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Old 06-09-2019, 02:29 AM
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Buy the Centurion tank then relocate the neck.

You do what you need to do. Find some place that can tig weld stainless locally and make it happen.
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Old 06-09-2019, 07:31 AM
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The problem you are facing on finding a replacement tank is all related to just one factor....the 1971 and 1972 Riviera tank filler is offset to the drivers side of the bumper, and not in the center as was most GM cars of the period, so that prevents any common interchange with other models like the Skylark/GS enjoys with the Chevelle or the Apollo with the Nova.

1973 tank is available, but it has a centered filler neck....maybe modify that, have the radiator shop put your original filler neck(or use the new neck if possible) in the corner and have the '73 location flat capped off ??
All the other dimensions should be the same.
that seems to be the only idea from several of the Buick forums

One alternative might be to search places like Desert Valley Auto Parts in the southwestern states for a good used part.

I love the Boattail Rivs, they don't get the recognition they deserve from the hotrod community...mostly just customs and lowrider or Donk guys.
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Old 06-09-2019, 11:14 AM
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Don't know if this the best option.. order a plain fuel cell that will fit or be close to fitting in the original place. Order it plain and put your own fittings where you need to have them. A bit of fabrication but this does work when you have a car that is oddball or at least oddball o the aftermarket..

https://www.speedwaymotors.com/JAZ-P...-10,33640.html

https://www.jazproducts.com/contact
You ca call Jaz and I have found them to be helpful..

Sam
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Old 06-09-2019, 12:18 PM
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Maybe your easiest option here is to use a Centurion tank and use a filler behind the plate setup.

You may have to extend or shorten the neck slightly. Something a fuel filler hose, some grease, and clamps will fix. But overall it is a good option here.
As for your old filler location. Smooth it or just leave it there to have the thing look orgional.
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Old 06-09-2019, 03:43 PM
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https://www.google.com/search?q=1972...MWpOcSAwDpIRM:

or maybe this

https://www.google.com/search?q=1972...AwDpIRM:&vet=1
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Old 06-10-2019, 09:11 PM
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None of those worked latech.

This is what his tank looks like;

https://forums.aaca.org/topic/293304...iera-gas-tank/
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Old 06-11-2019, 05:19 PM
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[QUOTE=cerial;4677471]None of those worked latech.

This is what his tank looks like;

Got it. That is a wierd tank.
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Old 06-12-2019, 08:39 AM
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elderly iron just did a gas tank repair . Cut it open, glassed it and back together.
link to first vid.
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Old 06-12-2019, 07:06 PM
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Hi Have you checked with Tanks Inc.they are a part of Yogi's.
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Old 06-12-2019, 10:53 PM
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I found a local radiator shop that seemed confident with this sort of work. They said the tank was borderline too-far-gone, so I gave them $100 to clean it and reveal how bad it really is. If they think they can rebuild it at that point, the cost is about another $200. Not too bad, and I get to retain the stock tank.

Thank is a big 'if' though.
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Old 06-13-2019, 04:19 AM
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[QUOTE=jamieson;4677043]Hello!


Just an idea. I've heard of cleaning the tank out with an abrasive media and water. ( you tube it ). Then get some motorbike tank sealer and swish that around to coat the inside. That's a 70's remedy..I'm sure there's an even better sealer nowadays.
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Old 06-14-2019, 06:28 AM
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Fuel tank 72 Riv

they have a 72 Riv at Desert valley.
https://www.dvap.com/?s=any&q_make=B...&submit=Search
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Old 06-14-2019, 10:49 AM
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Quote:
Originally Posted by murph View Post
they have a 72 Riv at Desert valley.
https://www.dvap.com/?s=any&q_make=B...&submit=Search
Not a single Riviera, of any year, to be seen on the CURRENT inventory list....some old internet links can be misleading. I searched several days ago too, off a old link and the car from the link was gone.
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