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New Gas Tank Alignment Tricks?
#1398744 Thu Feb 25 2021 06:12 AM
Joined: Jul 2020
Posts: 57
P
Wrench Fetcher
I'm installing a new gas tank in my 1949 3600. Ordered the new one from Jim Carter that advertises a more accurate angle to the inlet and vent pipes: https://www.oldchevytrucks.com/cart/product.asp?prodid=MEG150&i=19888|||||

Of course, once in hand, they don't line up so well with the existing filler/vent tube. If the filler lines up then the vent is off center to its pipe by 3/4", and the filler tube while it is aligned with its tank tube is doing so at a different angle (off by about 3 degrees). Probably nothing that can't be fixed with the short length of rubber hoses, but the old tank lined up perfectly (and sadly it is one rusty barnacle!).

Is there something I'm missing? Or any tips/tricks? Otherwise I'm bolting this thing down tomorrow and hoping for no fumes in the cockpit!

Re: New Gas Tank Alignment Tricks?
PapaDisco #1398774 Thu Feb 25 2021 03:01 PM
Joined: Jun 2011
Posts: 4,002
E
'Bolter
I just installed a Jim Carter tank in my 55.2, the filler and vent lined up perfectly. I twisted the neck around by hand from the outside to get it lined up.

Ed

Attached Files

'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.
Re: New Gas Tank Alignment Tricks?
PapaDisco #1398792 Thu Feb 25 2021 04:32 PM
Joined: Mar 2014
Posts: 1,987
J
'Bolter
Can't say. I got one from Rock Auto maybe 3 or 4 years ago for $110 plus shipping and you couldn't have had a more accurate lineup for the filler, vent and lower outlet. The tank was made in Canada and I think the name of the company was Spectrum, Spectra or something like that. I was very impressed with the way it was built and packed. I did have to work a bit on the rubber cab grommet, but you want that to be a tight fit.


Jon

1952 1/2 ton with 1959 235
T5 with 3.07 rear end
Re: New Gas Tank Alignment Tricks?
PapaDisco #1398794 Thu Feb 25 2021 04:46 PM
Joined: Jul 2020
Posts: 57
P
Wrench Fetcher
I put in a new filler grommet, tight but no big deal. And I've rotated the filler pipe every different way but no joy. I'm using the original filler pipe, I wonder if the reproduction fillers are different?

Ed, from your pic it looks like you have the tank tipping backwards about 3 degrees? Is that just the pic or did you deliberately not mount it upright?

Re: New Gas Tank Alignment Tricks?
PapaDisco #1398822 Thu Feb 25 2021 06:38 PM
Joined: Feb 2016
Posts: 501
7
'Bolter
I have been very pleased with the Spectra Premium brand, I have used their gas tanks, ac condenser coils, and the latest was an oil pan for my 6.2/6.5 diesel, all fit like a glove.


1957 Chevrolet 5700 LCF 283 SM420 single speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto
Re: New Gas Tank Alignment Tricks?
PapaDisco #1399095 Sat Feb 27 2021 06:48 AM
Joined: Jul 2020
Posts: 57
P
Wrench Fetcher
Maybe these tanks are made for the later models (Ed's 55), but it sure is an imperfect fit in my early '49 3600. Anyway, it's in now and nothing leaks.

Re: New Gas Tank Alignment Tricks?
PapaDisco #1399121 Sat Feb 27 2021 04:10 PM
Joined: Jun 2011
Posts: 4,002
E
'Bolter
Papa,

It is meant to be mounted leaning back, no other position. Since it is such a modern truck it has felt or some such pads to protect the tank from being worn out by the steel mounting brackets.

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.
Re: New Gas Tank Alignment Tricks?
PapaDisco #1399154 Sat Feb 27 2021 07:28 PM
Joined: Mar 2014
Posts: 1,987
J
'Bolter
The tank I got came with a sheet of self-adhesive 1/16" thick neoprene which you could cut as needed (according to the instruction sheet that came in the box). Very impressive product and less costly than many of the other options out there. If your outside rubber grommet doesn't seal quite right, use some 3M 08509 Auto Bedding and Glazing Compound. It stays flexible until a week after forever.


Jon

1952 1/2 ton with 1959 235
T5 with 3.07 rear end
Re: New Gas Tank Alignment Tricks?
PapaDisco #1399716 Tue Mar 02 2021 05:57 PM
Joined: Jul 2020
Posts: 57
P
Wrench Fetcher
Ed, yep, a little tilt back is the only way it would mount. Odd because that creates a small pooling area in the back edge of the tank. I originally fiddled with the location of the tank until the filler and vent pipes lined up (better but still not perfect), but then the outlet under the tank wouldn't match up with the hole in the floor.

Anyway it works now. No more rust in the gas!


Moderated by  Woogeroo 

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