Cadillac & LaSalle Club Discussion Forum

Cadillac & LaSalle Club Forums => Technical / Authenticity => Topic started by: Giant Jason on December 28, 2017, 10:27:46 PM

Title: 68 DeVille fuel tank
Post by: Giant Jason on December 28, 2017, 10:27:46 PM
I got some new pipes for my baby for Christmas. When we went to cut the old ones off to install the new pipes, we noticed that my fuel tank was leaking in 4 different places- the neck, front, and both sides. So rather than start a fire, we put off the project until I change the tank. I wonder if someone can recommend a tank and make suggestions as to what else to change at the same time. My fuel gauge is working but I still plan to replace the sending unit. Should I add an Airtex pump and what are the advantages to that?

Thanks for any help/suggestions-
Jason
Title: Re: 68 DeVille fuel tank
Post by: cadillacmike68 on December 28, 2017, 10:54:33 PM
An inline electric pump with a toggle on/off switch up under the dash won't hurt, and it can make starting after the car has sat for a week much easier.

Change All the rubber lines and any questionable steel lines back there.

Nit sure where to get a replacement tank, you can't have it repaired?
Title: Re: 68 DeVille fuel tank
Post by: mario on December 28, 2017, 11:29:59 PM
Jason:
I pulled the one in my son's 68. If your interested, I will see if he would sell it. It has been out 2 years. Did not leak, only removed it for an internal pump for fuel injection tank. I am in San francisco, ca. Let me know.
Mario caimotto
Title: Re: 68 DeVille fuel tank
Post by: Giant Jason on December 28, 2017, 11:34:19 PM
Mario-
How did the tank look inside? I'm in Tampa, FL and I'm interested. I need the filler neck too.
Title: Re: 68 DeVille fuel tank
Post by: cadillacmike68 on December 29, 2017, 06:52:27 PM
Jason, we're close but I don't have an extra tank. I had a leak in mine repaired. Is yours deemed not repairable?
Title: Re: 68 DeVille fuel tank
Post by: mario on December 30, 2017, 12:31:40 AM
Jason:
I will check it for you. We reused the filler neck. Mike is correct, the tanks are repairable. Usually by older radiator shops. Might be worth it to check out. Let me know.
ciao,
Mario caimotto.
Title: Re: 68 DeVille fuel tank
Post by: TJ Hopland on December 30, 2017, 10:01:47 AM
Mario, do you remember what car's tank you used on your project?   And what sort of modifications were needed?  If there were not any significant mods that may be an option here too.   If something like a Chevelle tank fits without too much trouble those are easy to find.

Permatex and JB have very nice epoxy repair kits but if you have issues in 4 areas its likely thin in many more spots. 

I have heard good things about the professional tank coating processes.   DIY is more mixed results.   
Title: Re: 68 DeVille fuel tank
Post by: cadillacmike68 on December 30, 2017, 10:59:20 AM
Yeah, it depends on if it's rusted or cracked. Mine was cracked. A poorly mounted trailer hitch (which is no longer there pushed up on it when the car bottomed on a crazy driveway.
Title: Re: 68 DeVille fuel tank
Post by: mario on December 30, 2017, 06:14:50 PM
Jason:
This is the tank I used smaller but deeper. Needed it for fuel injection. The factory one was not deep enough for an 'in the tank' pump. Major surgery on the fill nozzle as this one points upward. Really a nice install but not an easy bolt in.
ciao,
Mario caimotto


http://www.tanksinc.com/index.cfm/page/ptype=product/product_id=418/category_id=153/mode=prod/prd418.htm
Title: Re: 68 DeVille fuel tank
Post by: mario on December 31, 2017, 07:34:22 PM
Jason:
I checked the inside of the tank through the fill tube. Everthing I can see (there is a baffle about 10" inside) is pristine. I could see no rust.
ciao,
Mario caimotto