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57 New Yorker,,,gas tank
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billy
Posted 2019-09-05 8:30 AM (#587088)
Subject: 57 New Yorker,,,gas tank



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Fellow Forward Lookers, I need to address a gas tank leak. Plan on pulling soon. Never pulled a tank before. Is it the 2 strap nuts and disconnect where it goes to the filler stem? I plan on siphoning the gas out 1st, disconnecting sending unit (which hasn't ever worked), disconnecting line to fuel pump, disconnecting filler stem from tank, remove the 2 rusted on nuts from strap and bringing her out. I miss anything? I also plan on trying one of those seal products instead of replacing the whole tank. Anyone have success with or can recommend a product to use? Where do we get new sending unit and tank straps? Thanks billy
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56D500boy
Posted 2019-09-05 10:04 AM (#587094 - in reply to #587088)
Subject: RE: 57 New Yorker,,,gas tank



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Billy: Your plan is generally good. However, you need to brace yourself for issues with the hanger strap nuts. They are probably siezed and might snap stuff when you go to take them off (try to avoid this by soaking them in PB Blaster or Moovit, etc. for a few days first).

Have a read on this:

http://www.forwardlook.net/forums/forums/thread-view.asp?tid=66848&...

Lots of stuff on the internet if/when you need it:

https://www.google.com/search?client=firefox-b-d&q=gas+tank+straps+5...

Good luck



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57burb
Posted 2019-09-05 10:43 AM (#587100 - in reply to #587088)
Subject: RE: 57 New Yorker,,,gas tank



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You will absolutely want to soak the gas tank j-hooks first. Even then, you might want to start looking for replacements for when you are ready to put it back together. They are generic, and available.

Be VERY careful to avoid putting too much torque on the nuts when removing them. Keep an eye on the piece of the body that the j-hook goes into; it can try to tear if there is too much resistance as you're removing the nut.

Also, there is no need to disconnect the fuel pump, that is about 15 feet away from the fuel tank.
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Powerflite
Posted 2019-09-05 4:11 PM (#587118 - in reply to #587088)
Subject: Re: 57 New Yorker,,,gas tank



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I've had very good luck with J-bolts if I just clean up the threads with a wire wheel first, and then soak with penetrating oil. Getting the threads clean seems to be the biggest help.
When you replace the sender, make sure it has the large resistance range from 15 to 210 (or thereabouts). There are other senders being sold that have a much smaller range to them, that won't work with your gauge.
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local2Ed
Posted 2019-09-05 8:26 PM (#587127 - in reply to #587118)
Subject: Re: 57 New Yorker,,,gas tank


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Powerflite - 2019-09-05 4:11 PM

I've had very good luck with J-bolts if I just clean up the threads with a wire wheel first, and then soak with penetrating oil. Getting the threads clean seems to be the biggest help..


Yes, to the above. I would add try to tighten nut carefully before going to loosen.

If you get in a bind, concrete anchor bolts, L shaped,non-galvanized, will work if you have access to a welder. Cut the short leg to lenght ,weld flat washer to short leg. You'll see what I mean when you see the old one.

I made a pair on a late Sunday night one time when we were using the car for a road trip early monday morning, been working just fine for the last 5-6 years.
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billy
Posted 2019-09-07 8:06 PM (#587231 - in reply to #587088)
Subject: Re: 57 New Yorker,,,gas tank



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Thanks for the tips guys...billy
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billy
Posted 2019-09-14 5:23 AM (#587502 - in reply to #587088)
Subject: Re: 57 New Yorker,,,gas tank



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Posts: 329
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Location: upstate new york
When you replace the sender, make sure it has the large resistance range from 15 to 210 (or thereabouts). There are other senders being sold that have a much smaller range to them, that won't work with your gauge.

Nathan,
All the sending units I've found so far are 10-100 resistance range....any source for the one you are mentioning?
Thanks,
billy
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mstrug
Posted 2019-09-14 5:46 AM (#587505 - in reply to #587088)
Subject: Re: 57 New Yorker,,,gas tank



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https://www.moparmall.com/Fuel-Gauge-Sender-Set-for-1957-1959-Plymou...

https://www.moparmall.com/SearchResults.asp?Search=tank+straps&Submi...

23 gallon...

https://www.ebay.com/itm/MOPAR-NOS-1957-58-1959-DODGE-PLYMOUTH-CHRYS...

straps

https://www.ebay.com/itm/1957-58-59-Chrysler-Dodge-Plymouth-Fuel-Gas...

https://www.ebay.com/itm/Mopar-57-58-59-Chrysler-Dodge-Plymouth-Deso...
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Powerflite
Posted 2019-09-14 10:25 AM (#587510 - in reply to #587088)
Subject: Re: 57 New Yorker,,,gas tank



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Those MoparMall senders are over-priced by a long ways. I purchased mine from Vans Auto on Ebay for $38. You could try contacting them and asking for it. The correct version had a yellow wire coming out of it, not a threaded stud, that looked just like this one.

https://www.ebay.com/itm/Mopar-1957-1958-1959-Chrysler-Slant-Six-Fue...

This guy obviously doesn't know what he is talking about as the slant 6 didn't come out until 1960 and the sender didn't depend on what motor you had. This sender *might* be the correct one. See if you can get the seller to measure the resistance for you.
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