large 40 gal Aero tank question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

grillzy · 08-30-2016, 05:36 PM

I need to drop my tank. It is the bolt through the floor and tank style with long carriage bolt from the top and I am assuming the flat washer on the underside is the nut (center fits 3/8 drive). I know the nut will not come loose today but may with a few days of wd-40. If not anyone have luck with grinding the head off the bolts and driving them from the top and have the nut come off the tank that way? Then I would just use threaded rod to re install.

**truckster** · 08-30-2016, 10:20 PM

WD-40 isn't very good at penetrating rust. Try PB Blaster, or you can make your own from a 50/50 mix of acetone and ATF. Supposedly that's the best rust penetrant there is.

**72 paul** · 08-30-2016, 10:36 PM

Quote:

Originally Posted by grillzy

I need to drop my tank. It is the bolt through the floor and tank style with long carriage bolt from the top and I am assuming the flat washer on the underside is the nut (center fits 3/8 drive). I know the nut will not come loose today but may with a few days of wd-40. If not anyone have luck with grinding the head off the bolts and driving them from the top and have the nut come off the tank that way? Then I would just use threaded rod to re install.

I got lucky and was able to get in between the two rear bolts and cut.Only had one in front, grinded the heads off all three and pound them through.Never had a problem with it haggin on with three.Soaked for awhile but no luck so got it out that way.Aero is still in business.

**GMC-YA68** · 09-01-2016, 01:46 PM

I had to grind the heads off from the top. I tried soaking for weeks. Stripped the 3/8 drive hole and ended up giving it to another board member and he drilled them off from the bottom.

grillzy · 09-01-2016, 05:23 PM

Seems like a pattern. I ground off the heads and 3 dropped out fine. The last one is being a real bear.

**72 paul** · 09-01-2016, 07:44 PM

Don't know how long mine had been in the truck, maybe 20 yrs or better.I am going to use it again, got use to the capacity for trips. Good luck.

Bigdav160 · 09-02-2016, 05:54 AM

I had one come out easy. The other three I had to grind the heads off. Tank came out easy enough. I was never able to remove the bolt remnants from the sleeves in the tank.

grillzy · 03-04-2018, 08:15 PM

Swap to strap? Anyone done that? What strap?

08-30-2016, 05:36 PM	#1
grillzy Registered User Join Date: Jan 2014 Location: belleville ontario Posts: 354	large 40 gal Aero tank question I need to drop my tank. It is the bolt through the floor and tank style with long carriage bolt from the top and I am assuming the flat washer on the underside is the nut (center fits 3/8 drive). I know the nut will not come loose today but may with a few days of wd-40. If not anyone have luck with grinding the head off the bolts and driving them from the top and have the nut come off the tank that way? Then I would just use threaded rod to re install.

08-30-2016, 10:20 PM	#2
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,789	Re: large 40 gal Aero tank question WD-40 isn't very good at penetrating rust. Try PB Blaster, or you can make your own from a 50/50 mix of acetone and ATF. Supposedly that's the best rust penetrant there is.

09-01-2016, 01:46 PM	#4
GMC-YA68 Senior Member Join Date: Mar 2004 Location: Lee's Summit, MO (KC) Posts: 742	Re: large 40 gal Aero tank question I had to grind the heads off from the top. I tried soaking for weeks. Stripped the 3/8 drive hole and ended up giving it to another board member and he drilled them off from the bottom. __________________ -Keegan- '72 Jimmy 4x4 - 5.3/4L65E/NP205 swap http://67-72chevytrucks.com/vboard/s...d.php?t=663780

09-01-2016, 05:23 PM	#5
grillzy Registered User Join Date: Jan 2014 Location: belleville ontario Posts: 354	Re: large 40 gal Aero tank question Seems like a pattern. I ground off the heads and 3 dropped out fine. The last one is being a real bear.

09-01-2016, 07:44 PM	#6
72 paul Senior Member Join Date: May 2011 Location: las vegas'nv Posts: 495	Re: large 40 gal Aero tank question Don't know how long mine had been in the truck, maybe 20 yrs or better.I am going to use it again, got use to the capacity for trips. Good luck.

09-02-2016, 05:54 AM	#7
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: large 40 gal Aero tank question I had one come out easy. The other three I had to grind the heads off. Tank came out easy enough. I was never able to remove the bolt remnants from the sleeves in the tank. __________________ My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe

03-04-2018, 08:15 PM	#8
grillzy Registered User Join Date: Jan 2014 Location: belleville ontario Posts: 354	Re: large 40 gal Aero tank question Swap to strap? Anyone done that? What strap?

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