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Fuel tank install - gasket or RTV?
I'm finally ready to get the fuel cell mounted in the car this weekend. I am using the bottom 1/2 of a factory tank as the base for a mounting perch for the cell and was thinking about using a thick bead of RTV Silicon around the mounting flange of the tank when I install it rather than the factory foam seal. My thinking is that it might help to bond the tank to the car a little rather than just be a crush seal like the factory foam. I've also added 2 additional hold-downs to the 3 factory locations. Has anyone done this before or does anyone have any thoughts or suggestions as to why or why not do this?
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Gary Osborne Chardon, Ohio ___________ 74 911 IROC 98 Panoz GTWC |
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03-01-2006, 04:51 AM
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Join Date: Sep 2001
Location: Columbus, OH
Posts: 1,011
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Only thing I can think of is that the foam may allow for leaking fuel, etc. to seep out of the car, rather than puddle inside. RTV would seal it up tight. Maybe add a drain hole or two at the bottom of the tank. Just a thought ...
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Doug 79 SC Targa w/ ITBs, 2004 Cayenne Turbo |
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03-01-2006, 05:33 AM
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The tank is actually cut in half holds no fuel. The fuel will be in a Fuel Safe Cell that is mounted on/in the lower portion of the factory tank. If that has a leak - I've got bigger problems!!
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Gary Osborne Chardon, Ohio ___________ 74 911 IROC 98 Panoz GTWC |
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03-01-2006, 05:44 AM
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Longhoods Unite!
Join Date: Mar 2005
Location: Bloomington, MN
Posts: 311
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i'm pondering the same thing, right now, mine is just sitting in there, need to do something with it.
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1970 911T -- Neglected, oil burning problem, batman smoke 1974 914 2.0 Weber'd -- new project!! **My Wife and I bought our first house in August of 2009, the footprint of the house is just over 1100 sq. ft...my garage is just over 1000 sq. ft. We compromise well  **
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03-01-2006, 06:40 AM
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The OEM foam is nice stuff. I would imagine it'll absorbs shock much better than RTV, if that really matters.
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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03-01-2006, 07:24 AM
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1979 Porsche 930 3.4
