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Old 07-30-2015, 04:05 PM   #1
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1991 Dodge Ram 350 Sportsmobile gray water tank replacement

I've got a 1991 Dodge Ram 350 Sportsmobile conversion and I just went over a rock that popped a hole in the bottom of the gray water tank. What's the price and where can I get a new gray water tank?

Thanks,
Kevin
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Old 07-30-2015, 07:46 PM   #2
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Re: 1991 Dodge Ram 350 Sportsmobile gray water tank replacem

Plastic mart has zillions of sizes and shapes, and will do custom fittings as well.

...depending on the damage it may be possible to repair it......can you post a picture?
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Old 07-30-2015, 08:06 PM   #3
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Re: 1991 Dodge Ram 350 Sportsmobile gray water tank replacem

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sportsmobile gray water tank.jpg  
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Old 07-30-2015, 09:17 PM   #4
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Re: 1991 Dodge Ram 350 Sportsmobile gray water tank replacem

Hi,

I've had great success with JB Weld for patching up polyethylene tanks.

Ensure it is dry and the cracked area is clean. Mix it up as noted and lay it on. Leave it to cure for a full day and test it.

Your worst case scenario is to dry it again and apply more JB.

Regards,

Gavin
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Old 07-31-2015, 10:20 AM   #5
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Re: 1991 Dodge Ram 350 Sportsmobile gray water tank replacem

Hole's too big for Jb weld. Finger width wide and five inches long.
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Old 07-31-2015, 12:12 PM   #6
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Re: 1991 Dodge Ram 350 Sportsmobile gray water tank replacem

Plastic-mart.com doesn't have any tanks in the dimensions I need.

Thanks,
Kevin
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Old 07-31-2015, 03:09 PM   #7
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Re: 1991 Dodge Ram 350 Sportsmobile gray water tank replacem

On my SMB the greywater tank was made of ABS, I'm pretty sure. If you look on youtube (or other) you can see videos of how folks have "welded" on patches (even to larger holes like yours). I think that's what I might try, just because removing/replacing a tank can be more complicated than you'd think. And the welding looks like it works even if your skills are a bit "rough and ready."

OTOH, you could perhaps find the exact tank, and/or have a custom one made. I don't know who made the black tanks on my SMB, but my current rig has "Inca" brand tanks (there is a molded in label).
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