Fuel tank to trunk floor sound insulation.

[Deleted User]
[Deleted User]
edited November -1 in HUDSON
Does anyone have a suggestion for a material that can be used to replace the fuel tank top to trunk floor bottom sound deadening material used on my 1950 Pacemaker Deluxe(!)? When I removed the tank from my Pacemaker many years ago for cleaning and coating the strips of, as I recall, a cardboard like material had been badly disintegrated. Consequently, I couldn't replace all this "cardboard" when I put the tank back on and the car has since had a slight "roar" from the back end particularly as I reach higher cruising speeds.



Hudsonly,



Dan

Comments

  • Unknown
    Unknown
    I typically recycle anything I can. I have strips of old synthetic carpet in both of my cars to mount the tank, will last a long time , not tightend up good could let it vibrate also . BUD
  • oldhudsons
    oldhudsons Senior Contributor
    what I have used is fireproof insulation used on firewalls by hot-rodders.

    I can't remember the name of the "glue" I used but it works great.

    Another little hint - best way to put gas tanks up/down is with a hydraulic floor jack. I use a pc. of plywood to put on top of the jack so have more surface on the bottom of the tank to prevent it from tipping. A lot easier and safer if rear end up on jack stands then you lay on your "creeper" & maneuver around. "Piece of cake", LOL!
  • bellbigdawg
    bellbigdawg Expert Adviser
    use "dyna mat" sound deadening, weatherproof, high tech product. the street rodders use it. comes in many thicknesses.
  • Clutchguy
    Clutchguy Senior Contributor
    You also might want to check around the filler neck. If you remembered,there was a big glob of ghou,and also resembled a form foam rubber piece with 3 metal pieces and studs with push on clips that pulled it tight against the body. Re-installing this will seal the gas tank filler neck and trunk area much better,and usually makes the noise alot less aduible. These are usually desolved to nothing,but you can go to the hardware store,buy some of that knee pad material,and make a new gasket seal. Also the black foamy pipe insulation works well when you split it open.
  • Unknown
    Unknown
    bellbigdawg wrote:
    use "dyna mat" sound deadening, weatherproof, high tech product. the street rodders use it. comes in many thicknesses.



    Same suggestion I had, Dyna mat is the best to use for this, Its also a heat shield as well. 100x better than the original stuff. Some even have an adhesive backing, just cut to fit, peel and stick
  • Aaron D. IL
    Aaron D. IL Senior Contributor
    Dynamat is basically Butyl Rubber and you can get it cheaper than the name brand stuff at your local hardware store under the roofing section, with the adheisive back. It comes in packs of narrow strips for like $15 and a whole ton of it for like $70 or so for 50 yards which of course is way more than you need. A quick workaround is to go to your local roofing contractor and ask if he has any ends of the stuff you can have.

    If you want to get closer to original just regualr roofing paper folded over a few times for thickness and glued would be approximate.
  • [Deleted User]
    [Deleted User]
    What I took off (actually it fell off) when I cleaned the tank on my 54 Hornet Coupe looked to be felt that had been soaked in some kind of wax or oil. there was 2 pieces stacked on each side. Fortunately they were in decent condition so I reused them. Aaron is right, maybe 45# roofing felt folded maybe 4 ply. I did not glue mine in as the tank and trunk floor hold them once it is strapped in. As stated above, I used a floor jack with a plywood square to lift the tank into position. I did the reinstall by myself so that was really the only way I could get the job done without dropping the tank.
    Bob
  • Sarah Young
    Sarah Young Senior Contributor
    bellbigdawg wrote:
    use "dyna mat" sound deadening, weatherproof, high tech product. the street rodders use it. comes in many thicknesses.



    I did this with the roof of my Jet. I had the inside roof sprayed with thin undercoating, then stuck a couple pieces of Dyna Mat up. If you tap on the roof, you can tell it's solid!
  • [Deleted User]
    [Deleted User]
    Hey, thanks not only for the suggestions for what would make a good substitue for the original insulation material, but how to remove and replace the fuel tank on a stepdown.



    Again Hudsonly,



    Dan
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