Gas Tank
Printed From: TheAMCForum.com
Category: The Garage
Forum Name: Body/Interior
Forum Description: Paint, glass, interior, rust, sheetmetal goes here.
URL: https://theamcforum.com/forum/forum_posts.asp?TID=93411
Printed Date: Apr/18/2024 at 5:00am
Software Version: Web Wiz Forums 12.03 - http://www.webwizforums.com
Topic: Gas Tank
Posted By: tedjr1
Subject: Gas Tank
Date Posted: Apr/03/2018 at 12:14pm
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Gas Tank Wow's Hello As some of you may know I have experienced several failures of the gas tank on my 70 AMX. Here I am seeking you advice about what might be the root cause. Here is the back ground information. My original tank failed some years ago and I had it cleaned & repaired at a radiator shop. Then a few years later this repair failed. I then took the tank to Don Hart who uses the Renu process . When this repair failed I purchased a good used tank which had been cleaned by a radiator shop. Now that tank has failed. Three times failure was on bottom but one time on hole was on top of tank. Note tank is non vented type. |
Replies:
Posted By: THE MENACE
Date Posted: Apr/03/2018 at 2:20pm
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Instead of throwing more money at old rusted/rusting gas tanks why not get a new reproduction tank from one of the vendors?? ------------- Former Owner of: The Craig Breedlove "AERO AMX" Still Owner: SS/AMX #9 replica (THE BIG MENACE) 70 AMX 416, EFI, Nash 5 speed 70 Javelin 401, 727 (Wife's car) 72 Gremlin Autocross Project. |
Posted By: tedjr1
Date Posted: Apr/03/2018 at 3:40pm
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I had looked into that before. The biggest problem I saw that none have filler necks. So would have to reuse the old one. Also the new tanks are not coated. |
Posted By: White70JavelinSST
Date Posted: Apr/03/2018 at 4:23pm
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Coated or uncoated, a new tank will last one heck of a long time,
especially if you paint the outside with something like Eastwood gas
tank paint and put something between the bottom of the car, the tank and the straps and the tank where things might rub together. https://www.eastwood.com/ew-tank-tone-metallic-coating-aerosol-13-oz.html?SRCCODE=PLA00010&gclid=EAIaIQobChMI142prISf2gIVjbjACh3x7wHfEAQYASABEgK1CPD_BwE" rel="nofollow - https://www.eastwood.com/ew-tank-tone-metallic-coating-aerosol-13-oz.html?SRCCODE=PLA00010&gclid=EAIaIQobChMI142prISf2gIVjbjACh3x7wHfEAQYASABEgK1CPD_BwE My guess at that point is the tank will last longer than you... Have a radiator shop remove the filler neck from your old tank and solder it to the new tank. ------------- 70 Javelin SST, second owner, purchased 1972 |
Posted By: Lyle
Date Posted: Apr/03/2018 at 5:24pm
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The tank, from what you have stated so far is scrap. Next question is what have you been putting in the tank and how have you been storing it? New vehicles are plastic tanks for a purpose - alcohol. It absorbs moisture, separates the petroleum additives faster (weeks, not months) and is in itself corrosive to steel in that it enhances oxidation, separation and electrolysis. As advised above, time for a new tank. Then treat it well, with good old petrol and additives if storing. My personal favorite is Seafoam but there are others out there.
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Posted By: THE MENACE
Date Posted: Apr/03/2018 at 6:39pm
It sounds like you should have collected a few filler necks by now, and you can always have the new tank coated if you feel that is necessary. ------------- Former Owner of: The Craig Breedlove "AERO AMX" Still Owner: SS/AMX #9 replica (THE BIG MENACE) 70 AMX 416, EFI, Nash 5 speed 70 Javelin 401, 727 (Wife's car) 72 Gremlin Autocross Project. |
tedjr1 wrote:Posted By: gd5052
Date Posted: Apr/04/2018 at 9:43am
| Have you tried Redkote tank sealer |
Posted By: Lyle
Date Posted: Apr/04/2018 at 10:08am
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The trouble at this point is that previous tank sealing has been done and failed. You would not know the compatibility of a new sealer adhering to the old sealer. Then to compound the problem the leaks may have gone under the old sealers and rotted the metal. The new sealer will not get there either. Time for a new tank, unless you split the tank, clean to bare metal, re-coat and re-seam (costing more then a new tank).
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Posted By: tedjr1
Date Posted: Apr/12/2018 at 12:51pm
| Thanks for the suggestions. Looks like a new tank would cost north of $500. What with new sender etc. plus filler neck welding. |
Posted By: scott
Date Posted: Apr/12/2018 at 5:01pm
Read up on the new senders before you buy one: http://theamcforum.com/forum/warning-ebay-sending-units-are-junk_topic92568.html" rel="nofollow - http://theamcforum.com/forum/warning-ebay-sending-units-are-junk_topic92568.html |
Posted By: TX390AMX
Date Posted: Apr/14/2018 at 3:13pm
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My local radiator shop plasma cut an 18" X 18" hole in the top of my 68 AMX tank, sandblasted the interior, TIG welded the top piece back on and used RedKote sealer inside after welding/testing. They drilled a 1/4"drain hole in a corner to drain the sealer, then soldered a copper penny over the hole. The welding doesn't show, it allowed complete access to the interior of the tank and it doesn't leak. Also a non-vented tank. This exercise wasnt't cheap, but neither are any of the alternatives and I kept my original tank with the correctly aligned filler neck. I believe my radiator guy's last words to me were, "DON'T BRING ME ANY MORE OF THOSE!" ------------- Terry 68 AMX 390 4 Sp Rally Green 68 AMX 390 4 Sp Matador Red 68 AMX 390 4 Sp Calcutta Russet 56 Chevy Sedan Delivery 2016 Can AM Spyder 55 Chev pickup |
Posted By: AfterhoursFab
Date Posted: Apr/18/2018 at 8:52pm
| You may want to give RCI Racing a call, in the past they have built me all kinds of odd shaped tanks. The most recent one was for a custom jeep that held 21 gallons, had all kinds of bends in it, and it was only $220 plus shipping. |
Posted By: 990V8
Date Posted: Apr/21/2018 at 4:52pm
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PO had an alloy tank made for my Ambo. Original size n shape and sitting in the original straps. Not much help for you as that was in the UK, but it will likely outlast the car. Ivor ------------- 63 Canadian Ambo 990 V8 327 74 LandRover Lightweight V8 SIII Shopping Trolley |