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#1343606 01/25/2020 9:14 PM
Joined: Sep 2017
Posts: 73
J
PA OUTLAW
PA OUTLAW
J Offline
Joined: Sep 2017
Posts: 73
remove sending unit from my 1954 chevy 3100 looked in a little varnish NO rust are those tanks galvanize out side looks great but while in out would like to clean it used to clean motor cycle tanks with white vinegar but that was mainly for rust. no rust at all but varnish any great ideals THANK YOU IN ADVANCE !!!!!!!

Joined: May 2015
Posts: 11,063
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Joined: May 2015
Posts: 11,063
Gas tanks are typically made of terne plated steel, which is basically lead coating.
If you don't have any rust, a good strong solvent will remove the varnish. Something like lacquer thinner or acetone. Be careful about vapors, etc. The stuff is probably more flammable than gasoline.


Kevin
1951 Chevy 3100 work truck
Follow this saga in Project Journal
Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
Joined: Mar 2004
Posts: 6,214
M
'Bolter
'Bolter
M Offline
Joined: Mar 2004
Posts: 6,214
A safer way might be to take it to a radiator shop and have it hot tanked...

Mike B smile


Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD
Joined: Jun 2011
Posts: 5,096
E
Crusing in the Passing Lane
Crusing in the Passing Lane
E Offline
Joined: Jun 2011
Posts: 5,096
Trouble is, old time radiator shops that do that are drying up with zoning, urban sprawl, and throwaway parts.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Joined: May 2015
Posts: 11,063
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Joined: May 2015
Posts: 11,063
Yep, Fortunately the one radiator shop that could do that in Anchorage is still open, but the plating shop closed years ago.


Kevin
1951 Chevy 3100 work truck
Follow this saga in Project Journal
Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
Joined: Sep 2013
Posts: 1,362
M
'Bolter
'Bolter
M Offline
Joined: Sep 2013
Posts: 1,362
If no rust or sediment, why go to the trouble of cleaning it? If the OP means he looked in and very old gas was in the bottom and turned to varnish, just pull it, put in a bit of fresh gas, let it set a while then slosh it a bit and dump.


RonR


1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1964 CJ5
Joined: Feb 2004
Posts: 29,792
H
Kettle Custodian (pot stirrer)
Kettle Custodian (pot stirrer)
H Offline
Joined: Feb 2004
Posts: 29,792
That varnish will need a stronger solvent than gasoline to remove it. Lacquer thinner or acetone would work, or a strong solution of Trisodium Phosphate in HOT water (concrete cleaner) would be another option. I've cleaned gas tanks by putting a couple of shovels of pea gravel into them, and strapping the tank to a rear wheel of my tractor. A couple of hours of bush-hogging weeds in a pasture does a really good job of cleaning.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
Joined: Apr 2008
Posts: 9
R
New Guy
New Guy
R Offline
Joined: Apr 2008
Posts: 9
Cleaned my 46 under the seat tank as good as I could to get all loose rust out
Poured a quart of red coat sealer let it dry
Several days (probably longer ) before I got back to it
Worked great
also permetex fuel tank repair worked great
For me on small leaks and resealed around
Where gas plug area was cracked on 55 Chevy car
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Last edited by rs52; 03/20/2020 8:57 PM.

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