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Why would Stude hang gas tank ('57 Hawk) from body on one side, frame on the other?

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  • #16
    I understand why the gas tanks are mounted with a spring set-up on one side. But have strongly opined they shoulda used two mount points on that side, as they did on the frame mounted side. I developed that opinion after the spring mounted side gave way once on the 62GT, and allowed the gas tank to skid along the pavement a few hundred feet till I could get pulled over on the freeway. The pavement all but ground a hole in the skidding edge, and coulda killed everyone in the car if it had ignited the fuel in the tank.

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    • #17
      Back to my "practical" questions: (very interesting comments, by the way! and I too protect my 60gal air compressor w/ 1" thick vibration dampers purchased with the compressor; leaving it ON the pallet was a good idea; would have solved the problem of "what do I do with this dang pallet, too good & heavy and occasionally useful to throw, but always in the way? :-)

      1. I got my '56-'58 Parts Catalog this morning and looked this up; the SPRING and 2" bolt is only specified (for gas tank to body standoff) for all cars sometime into 1956 ("Note 20"; various serial numbers for all 56 and 56J cars). After that only specifies a nut and bolt there. Still sounds to me like the SPRING on the gas tank body stanchion bolt is the BEST 'version'?. Can't see why that would be LESS GOOD: just a few cents cheaper for "planning how to go out of making cars" Stude :-( ??

      Out of curiousity, I'll have to thoroughly examine my left-over parts, see if the "original" '57 tank had the spring, or the bolt/nut only. (mine is an EARLY '57, made Oct '56 so COULD have been left over). Or if this changed again and the later (62 maybe?) tank I have again had the spring specified. Both of my gas tanks appeared to have or HAVE had what appear to be same material as body-shims under the tank on the chassis mounts but don't see that in the catalog. Not that I'm 100% positive I EVER find all the right lines in the catalog. :-)

      2. for those of you who have done 'frame-off' restorations, do you simply wait until the body is painted (underneath and firewall anyway) and installed on chassis before installing the gas tank? I can easily 'temporarily' support it to route/bend my new gas line, and then take it off again. Just had always figured I'd have that mounted before the body went on. Not a big deal, just curious. The frame-flex issue makes sense for the mounting design, though to me, as a NON-AUTOMOTIVE engineer, it does seem like you could put springs on all three bolts and mount to the frame, and have significant 'flex' too. BUT, I have no idea how much our frames actually DO twist, in INCHES perhaps, not thousands :-) So, will no longer disparage those thoughtful engineers protecting families (then and now) from gas tank leaks and subsequent explosions (two nice igniters called tail-pipes running on either side!)
      Last edited by bsrosell; 12-30-2017, 07:27 AM.

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      • #18
        Originally posted by bensherb View Post

        As for fuel tank mounting; the tanks on both our early '53 starlite and '62 GT mount the same. I guess they thought it was a good way to do it.

        The 1953 model is slightly different, with different drivers side fuel tank brackets than the 1962. We came across this in looking at dual exhaust for the 1953. The fuel tank.is offset to the driver's side, which obstructs hanging dual exhausts. Desiring a more centered fuel tank, we thought what did Studebaker do when they went to duals? Looking at a Golden Hawk, the tank is more centered, so we obtained those brackets. Probably moved the tank approximately 1 1/2 inches to passenger side.

        As to what to do when working on the chassis build, we installed the later style brackets on the driver's side of the tank, and suspended the passengers wide with an industrial Tyrap around the rear frame rail and through the tank flange bolt hole. We need the tank in position for positioning the external fuel pump and the two filters, as well as the return line for the fuel injection.
        sigpic 1963 Studebaker Avanti: LS1 motor and T-56 transmission have been moved rearward, set up as a two seat coupe with independent rear suspension. Complex solutions for nonexistant problems.

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        • #19
          Originally posted by grobb284 View Post
          The 1953 model is slightly different, with different drivers side fuel tank brackets than the 1962. We came across this in looking at dual exhaust for the 1953. The fuel tank.is offset to the driver's side, which obstructs hanging dual exhausts. Desiring a more centered fuel tank, we thought what did Studebaker do when they went to duals? Looking at a Golden Hawk, the tank is more centered, so we obtained those brackets. Probably moved the tank approximately 1 1/2 inches to passenger side
          I meant the '53 and'62 were mounted in the same fashion. You are correct, the actual brackets are different. On our '53 we made spacers to extend the brackets in order to move the tank to the right for dual exhaust clearance.

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          • #20
            I also put a '57 Gas tank into a '53, they are not a bolt in, you have to fashion your own brackets......

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