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Foaming around a fuel tank

Old 05-14-2004, 06:22 AM
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Default Foaming around a fuel tank

Just finished rewiring my 88 Hydra Sport... Running wires port and starbord I noticed there was nothing between the fuel tank and the stringers. Should I add 2 part foam or just leave it as is??? There is no movement to the tank now.. Thanks Mitch
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Old 05-14-2004, 01:59 PM
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Default RE: Foaming around a fuel tank

what kind of tank? poly or aluminum
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Old 05-14-2004, 04:55 PM
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Default RE: Foaming around a fuel tank

Sea_Dad, It's a poly tank 120gal.
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Old 05-14-2004, 04:56 PM
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Default RE: Foaming around a fuel tank

Why foam it? You are just creating a way for water to be trapped. Leave it alone!!
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Old 05-14-2004, 05:18 PM
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Default RE: Foaming around a fuel tank

Well water entrapment aside, if it's a poly tank, the foam wont stick to it. So it wont act as an adhesive gluing it to the boat. About the best you can expect is it acting as a cushion for movement. Which isnt a bad thing if it's not secured in some manner.

I would recommend calling, no emails, and asking the manufacturer how they secured the tank to begin with, and get their opinion about foaming around it. you would be surprised to know most will talk to you candidly on the phone.
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Old 05-14-2004, 06:54 PM
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Default RE: Foaming around a fuel tank

DO NOT FOAM a poly tank! They swell and move around.
Check with a manufacture of poly tanks they will tell you not to foam them in.
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Old 05-14-2004, 07:12 PM
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Default RE: Foaming around a fuel tank

umm they better not be moving around.
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Old 05-14-2004, 10:22 PM
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Default RE: Foaming around a fuel tank

I just got a couple of poly tanks and the instructions specifically say to not foam around the tank. It mentions neoprene to use as a contact buffer if needed. It says to allow a 3% space around the tank for swelling.
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Old 05-15-2004, 07:52 AM
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Default RE: Foaming around a fuel tank

Thanks for the replys. That explanes the 3% space arround it like Tin Man said ( By the way, Nice boat ) ... It has 1-1/2 strapping holding it down. Just wondering... Thanks Mitch
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Old 05-15-2004, 09:00 AM
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Default RE: Foaming around a fuel tank

What Tin Man said about swelling is what I ment about moving around. Not slidding around.
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Old 05-15-2004, 03:02 PM
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Default RE: Foaming around a fuel tank

slip sliding along.
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