1968 98 gas tank - ClassicOldsmobile.com

General Questions Place to post your questions that don't fit into one of the specific forums below.

1968 98 gas tank

Reply

 
 
 
Old September 12th, 2018, 04:46 AM
  #1  
Registered User
Thread Starter
 
Join Date: May 2017
Posts: 5
1968 98 gas tank

Hello everyone, sorry if Iím not posting in the correct place but can anyone tell me if I can buy a new gas tank for my 1968 98 Oldsmobile. The filler neck is cracked and I canít find any local places that will weld it and I would love to be able to buy that could fit with out modifications. Thank you
Jos78 is offline  
Reply With Quote
Old September 12th, 2018, 08:14 AM
  #2  
Registered User
 
Join Date: Jun 2009
Location: southern New Mexico
Posts: 11,773
No one makes new gas tanks for big Oldsmobiles of this era. Your only hope is to either get yours fixed, which appears not to be possible, or to find a used one from another car. A tank from any full-size '68 Olds (98, Delta, Delmont) would work. Not sure if earlier or later years would.
jaunty75 is offline  
Reply With Quote
Old September 12th, 2018, 10:35 AM
  #3  
Moderator
 
Olds64's Avatar
 
Join Date: Jul 2007
Location: Edmond, OK
Posts: 10,372
You might try to coat the interior of the tank with a restoration kit.

https://www.amazon.com/KBS-Coatings-53000-Sealer-Gallon/dp/B000IBEOQ2/ref=sr_1_1?ie=UTF8&qid=1536769911&sr=8-1&keywords=fuel+tank+restoration+kit https://www.amazon.com/KBS-Coatings-53000-Sealer-Gallon/dp/B000IBEOQ2/ref=sr_1_1?ie=UTF8&qid=1536769911&sr=8-1&keywords=fuel+tank+restoration+kit


You can also paint the exterior with a durable paint like Rust O Leum or POR-15. This might seal the crack. Of course, you can also try one of these repair kits:

https://www.amazon.com/Versachem-90180-Heavy-Duty-Fuel-Repair/dp/B002N5JAO2/ref=sr_1_3?ie=UTF8&qid=1536769991&sr=8-3&keywords=fuel+tank+repair+kit https://www.amazon.com/Versachem-90180-Heavy-Duty-Fuel-Repair/dp/B002N5JAO2/ref=sr_1_3?ie=UTF8&qid=1536769991&sr=8-3&keywords=fuel+tank+repair+kit


A friend and I fixed the gas tank of his wife's Mercury Cougar with a kit like the 2nd one. It worked great. I also used the 1st kit I linked to restore the tank on my 71 98. It was a good investment.
Olds64 is offline  
Reply With Quote
Old September 12th, 2018, 04:07 PM
  #4  
Registered User
 
m371961's Avatar
 
Join Date: Mar 2012
Location: Sistersville, WV
Posts: 2,163
Did you try any old school radiator shops in your area? Many years ago I soldered a few by first filling the tank within a inch of the repair with water then cleaned, used acid flux and a acid core solder. Maybe I was young and dumb, but that's how I did it.
m371961 is offline  
Reply With Quote
Old September 12th, 2018, 05:38 PM
  #5  
Allan R is online now  
Reply With Quote
Old September 14th, 2018, 06:58 AM
  #6  
Registered User
Thread Starter
 
Join Date: May 2017
Posts: 5
Thank you guys. I know they donít make gas tanks specific for my car but I was just hoping someone knew of one that is about the same size that would just happen to work. Iím a rookie at working on cars and boy do I really appreciate everyoneís good advice. I should have had joined this group about 5 years ago.
Jos78 is offline  
Reply With Quote
Old September 14th, 2018, 08:57 AM
  #7  
Moderator
 
Olds64's Avatar
 
Join Date: Jul 2007
Location: Edmond, OK
Posts: 10,372
If you decide to use a fuel tank restoration kit make sure you wear PPE. Latex gloves, safety glasses and a respirator are mandatory.
Olds64 is offline  
Reply With Quote
Old September 14th, 2018, 11:41 AM
  #8  
Registered User
 
Join Date: Jun 2009
Location: southern New Mexico
Posts: 11,773
Originally Posted by Jos78 View Post
Thank you guys. I know they donít make gas tanks specific for my car but I was just hoping someone knew of one that is about the same size that would just happen to work.
You know, I wonder if the tank I bought for my '78 Toronado would work. I have a '67 Delta 88, and I'm guessing the tank in that car is similar to the one in yours.

I removed the tank from the Delta a few years ago to clean it up and replace the sending unit. Here's a couple of photos of it I took at the time.






I replaced the tank in the Toro, and here's a couple of photos of the new one I took before I put it in. (That's an old sofa cushion underneath it, just to hold it up a little bit while I was installing the sending unit.) New gas tanks are still available for a '78 Toro. I know it's not identical, especially because of the bulge where the sending unit attaches. But it is otherwise basically the same shape. The sending unit is in the same place. The filler neck is in the same place. One thing the Toro tank doesn't have is vent holes in the corner that you can see in the lower photo above. If the tank on your '68 has vent holes, you might be able to accomplish the same thing either by putting in a sending unit like the one shown for the '78, which has a vent line, or get a vented gas cap. In fact, if you get this Toro tank, you would want to get a new sending unit for it as well since you're replacing everything, anyway. So a new tank AND new sending unit. The sending unit wires up exactly the same as for your car. The black wire to ground and the brown wire to the sending unit. Should work just fine with your gas gas gauge on the dash.

So the possible issue is the hump where the sending unit is located. You might need to pad the top of the tank around the hump so that it fits evenly and snugly against the underside of the car when you tighten the fuel tank straps. But otherwise, can anyone see something about this that won't let it work?


jaunty75 is offline  
Reply With Quote
Old September 14th, 2018, 12:07 PM
  #9  
Just an Olds Guy
 
Allan R's Avatar
 
Join Date: Jul 2008
Location: Edmonton, AB. And "I am Can 'eh' jun - eh"
Posts: 22,723
The hump will be the problem. It looks to be about 2" too high. That's huge when fitting a tank. Only way to make the Toro tank fit would be to cut that section out and weld in flat metal. Not worth it.
Allan R is online now  
Reply With Quote
Old September 15th, 2018, 02:46 AM
  #10  
Registered User
Thread Starter
 
Join Date: May 2017
Posts: 5
I think I got lucky because I found a guy about 45 minute drive from me that said he repairs fuel tanks and it would cost my 100 dollars. I did buy a new fuel sending unit not that long ago, I was kinda irritated because the guy I purchased it from told me they rebuild the cylinder style sending units I have because they donít make them after market after paying him 200 dollars and some change I received one with some numbers on it and decided to do a google search and found the same one for 40 bucks. I literally could have bought 5 of them for that price.
Jos78 is offline  
Reply With Quote
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
joemo
Other Oldsmobiles
3
August 2nd, 2015 06:18 AM
1carsick
Parts For Sale
6
October 17th, 2012 10:10 AM
beepac98
Parts Wanted
1
March 29th, 2012 10:47 AM
Texas442
General Discussion
2
January 30th, 2012 06:36 PM
cola
Other
1
May 10th, 2008 11:41 AM


Thread Tools
Search this Thread
Quick Reply: 1968 98 gas tank


Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.